Powder X-ray Diffraction (XRD) is one of the primary techniques used by mineralogists and solid state chemists to examine the physico-chemical make-up of unknown solids. This data is represented in a collection of single-phase X-ray powder diffraction patterns for the three most intense D values in the form of tables of interplanar spacings (D), relative intensities (I/Io), and mineral name.
The XRD technique takes a sample of the material and places a powdered sample in a holder, then the sample is illuminated with x-rays of a fixed wave-length and the intensity of the reflected radiation is recorded using a goniometer. This data is then analyzed for the reflection angle to calculate the inter-atomic spacing (D value in Angstrom units - 10-8 cm). The intensity(I) is measured to discriminate(using I ratios) the various D spacings and the results are compared to this table to identify possible matches.
For more information about this technique, see X-Ray Analysis of a Solid or take an internet course at Birkbeck College . Many thanks to Frederic Biret for these data.
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D1(Io) D2(I/Io) D3(I/Io) Mineral Name 0.7768(1) 0.7877(1) 3(1) Bowieite (Rh,Ir,Pt)1.77S3 0.779(1) 2.18(1) 0.8237(0.9) Sudburyite (Pd,Ni)Sb 0.7874(1) 0.8623(0.8) 0.8847(0.7) Rhodium (Rh,Pt) 1.019(1) 1.081(0.75) 1.887(0.63) Nowackiite Cu6Zn3As4S12 1.019(1) 1.757(1) 1.91(0.8) Kalininite ZnCr2S4 1.057(1) 1.483(1) 3.527(1) Ustarasite Pb(Bi,Sb)6S10 1.066(1) 2.05(1) 9.63(1) Freboldite CoSe 1.089(1) 1.846(1) 2.371(0.9) Ferdisilicite * FeSi2 1.12(1) 2.72(1) 5.44(1) Arsenolamprite As 1.142(1) 1.094(0.8) 2.18(0.8) Chengdeite Ir3Fe 1.156(1) 2(0.9) 1.003(0.7) Gupeiite Fe3Si 1.16(1) 2.02(1) 1.43(0.8) Chromferide Fe3Cr1-x (x=0,6) 1.163(1) 2.228(0.9) 1.932(0.7) Isoferroplatinum (Pt,Pd)3(Fe,Cu) 1.195(1) 2.24(1) 0.797(0.9) Tetra-auricupride AuCu 1.196(1) 1.991(1) 1.817(0.9) Fersilicite * FeSi 1.202(1) 2.295(1) 1.408(0.9) Atokite (Pd,Pt)3Sn 1.202(1) 2.295(1) 1.408(0.9) Rustenburgite (Pt,Pd)3Sn 1.22(1) 2.13(1) 1.35(0.6) Osmium (Os,Ir) 1.299(1) 2.163(1) 1.529(0.8) Khamrabaevite (Ti,V,Fe)C 1.306(1) 4.62(1) 16(1) Perlialite K8Tl4Al12Si24O72·20(H2O) 1.31(1) 1.52(1) 2.49(1) Moissanite SiC 1.3346(1) 2.243(0.9) 3.516(0.9) Baotite Ba4(Ti,Nb)8Si4O28Cl 1.375(1) 3.23(1) 3.55(1) Julienite * Na2Co++(SCN)4·8(H2O) 1.386(1) 2.75(1) 2.88(0.7) Olkhonskite (Cr+++,V+++)2Ti3O9 1.388(1) 4.27(1) 2.19(0.9) Jeremejevite Al6B5O15(F,OH)3 1.39(1) 2.41(1) 10.8(1) Glucine CaBe4(PO4)2(OH)4·0.5(H2O) 1.393(1) 1.418(1) 2.11(1) Akdalaite (Al2O3)4·(H2O) 1.4(1) 1.49(1) 2.49(0.5) Leadamalgam HgPb2 1.43(1) 1.62(1) 2.99(1) Augite (Ca,Na)(Mg,Fe,Al,Ti)(Si,Al)2O6 1.44(1) 2.14(1) 2.25(0.9) Mathiasite (K,Ca,Sr)(Ti,Cr,Fe,Mg)21O38 1.44(0.9) 2.84(0.9) 1.69(0.85) Romanite * (Fe2+,U,Pb)2(Ti,Fe3+)O12 1.45(1) 2.48(1) 2.043(0.9) Bityite CaLiAl2(AlBeSi2)O10(OH)2 1.485(1) 9.77(1) 3.17(1) Brammallite * (Na,H3O)(Al,Mg,Fe)2(Si,Al)4O10[(OH)2,(H2O)] 1.486(1) 2.05(1) 2.15(1) Niggliite PtSn 1.487(1) 1.593(1) 2.9(0.9) Shuiskite Ca2(Mg,Al)(Cr,Al)2(SiO4)(Si2O7)(OH)2·(H2O) 1.494(1) 2.92(0.8) 8.3(0.6) Chrysocolla (Cu,Al)2H2Si2O5(OH)4·n(H2O) 1.495(1) 1.204(0.9) 2.83(0.7) Luanheite Ag3Hg 1.503(1) 2.572(1) 2.457(0.7) Preiswerkite NaMg2Al3Si2O10(OH)2 1.506(1) 2.485(1) 1.483(0.9) Mangan-neptunite KNa2Li(Mn,Fe++)2Ti2Si8O24 1.508(1) 3.02(1) 1.793(0.7) Calciotantite Ca(Ta,Nb)4O11 1.511(1) 2.6(0.9) 5.2(0.85) Takeuchiite Mg2Mn+++O2(BO3) 1.516(1) 2.163(1) 3.19(1) Babefphite BaBe(PO4)(F,O) 1.519(1) 2.6(1) 4.52(0.8) Chromphyllite ! (K,Ba)(Cr,Al)2[AlSi3O10](OH,F)2 1.52(1) 4.56(1) 15.4(1) Nontronite Na0.3Fe+++2(Si,Al)4O10(OH)2·n(H2O) 1.53(1) 4.58(1) 15.8(0.8) Hectorite Na0,3(Mg,Li)3Si4O10(OH)2 1.539(1) 1.804(1) 2.94(1) Tazheranite CaTiZr2O8 1.54(1) 2.35(0.6) 2.66(0.6) Mcgovernite Mn9Mg4Zn2As2Si2O17(OH)14 1.54(1) 2.58(1) 2.88(0.6) Majorite Mg3(Fe,Al,Si)2(SiO4)3 1.54(1) 2.58(1) 2.88(0.6) Pyrope Mg3Al2(SiO4)3 1.54(1) 2.67(1) 15.4(1) Sauconite Na0,3Zn3(Si,Al)4O10(OH)2·4(H2O) 1.54(1) 3.59(1) 4.36(1) Neotocite (Mn,Fe++)SiO3·(H2O) (?) 1.55(1) 2.522(1) 1.805(0.92) Sabelliite Cu2Zn(As,Sb)O4(OH)3 1.552(1) 1.818(1) 2.95(1) Uranmicrolite (U,Ca)2(Ta,Nb)2O6(OH) 1.574(1) 2.62(1) 2.92(0.9) Calderite (Mn++,Ca)3(Fe+++,Al)2(SiO4)3 1.587(1) 1.84(1) 3.04(1) Cesstibtantite (Cs,Na)SbTa4O12 1.59(1) 1.8(1) 2.13(1) Lindsleyite (Ba,Sr)(Ti,Cr,Fe,Mg)21O38 1.609(1) 3.159(1) 2.633(0.8) Cobaltaustinite CaCo(AsO4)(OH) 1.61(1) 2.52(1) 2.95(1) Maghemite gamma-Fe+++2O3 1.618(1) 1.873(1) 2.645(1) Zavaritskite BiOF 1.62(1) 2.14(1) 2.95(1) Bismutite Bi2(CO3)O2 1.62(1) 2.71(1) 3.03(0.8) Hibschite Ca3Al2(SiO4)3-x(OH)4x(x=0.2-1.5) 1.625(1) 2.14(1) 2.102(0.6) Pseudosinhalite ! Mg2Al3B2O9(OH) 1.629(1) 2.659(1) 5.3(1) Murdochite PbCu6O8-x(Cl,Br)2x 1.6332(1) 2.709(0.85) 2.423(0.65) Pyrite FeS2 1.635(1) 3.311(1) 7.4(1) Akaganeite Fe+++(O,OH,Cl) 1.635(1) 4(0.98) 2.33(0.69) Nsutite (Mn++++1-x)(Mn++x)(O2-2x)(OH2x) where x = 0.06-0.07 1.64(1) 1.39(0.95) 2.84(0.85) Simpsonite Al4(Ta,Nb)3O13(OH) 1.667(1) 2.539(0.9) 2.79(0.8) Kimzeyite Ca3(Zr,Ti)2(Si,Al,Fe+++)3O12 1.67(1) 1.42(0.6) 2.16(0.6) Kleberite * FeTi6O13·4(H2O) (?) 1.67(1) 2.67(0.97) 3.63(0.96) Eskolaite Cr2O3 1.674(1) 2.36(0.9) 2.85(0.9) Polydymite NiNi2S4 1.68(1) 1.83(0.6) 2.87(0.5) Fletcherite Cu(Ni,Co)2S4 1.68(1) 2.59(1) 2.77(0.8) Cobaltite CoAsS 1.683(1) 2.58(1) 2.82(0.9) Yafsoanite Ca3Te2Zn3O12 1.686(1) 2.481(0.8) 2.183(0.7) Pseudorutile Fe+++2Ti3O9 1.688(1) 1.511(0.6) 2.673(0.6) Schallerite Mn++16[As+++O2OH][Si12O30](OH)14 1.69(1) 1.7(1) 1.435(0.9) Davidite-(Ce) (Ce,La)(Y,U)(Ti,Fe+++)20O38 1.69(1) 3.21(0.8) 2.48(0.6) Belyankinite Ca1-2(Ti,Zr,Nb)5O12·9(H2O) (?) 1.692(0.4) 2.48(0.3) 3.21(0.2) Manganbelyankinite (Mn,Ca)(Ti,Nb)5O12·9(H2O) 1.694(1) 3.258(0.8) 2.985(0.7) Yttrobetafite-(Y) (Y,U,REE)2(Ti,Nb,Ta)2O6(OH) 1.695(1) 3.25(0.8) 2.81(0.7) Laurite RuS2 1.707(1) 3.28(1) 2.52(0.9) Struverite (Ti,Ta,Fe+++)O2 1.71(1) 3.729(0.9) 2.709(0.7) Natanite Fe++Sn++++(OH)6 1.713(1) 2.01(1) 2.69(0.9) Maucherite Ni11As8 1.717(1) 2.086(0.9) 3(0.5) Gagarinite-(Y) NaCaY(F,Cl)6 1.72(1) 2.456(1) 4.23(1) Hisingerite (Fe,Mn)SiO3,Fe+++2Si2O7·2(H2O) 1.72(1) 3.26(0.9) 2.55(0.8) Ordonezite ZnSb2O6 1.74(1) 2.56(0.8) 3.33(0.8) Ferrotapiolite (Fe++,Mn++)(Ta,Nb)2O6 1.74(1) 2.56(0.8) 3.33(0.8) Tapiolite * (Fe,Mn)(Ta,Nb)2O6 1.74(1) 2.87(1) 3.31(1) Hollingworthite (Rh,Pt,Pd)AsS 1.74(1) 2.87(1) 3.32(1) Irarsite (Ir,Ru,Rh,Pt)AsS 1.74(1) 3.7(0.7) 5.02(0.7) Clinohumite (Mg,Fe++)9(SiO4)4(F,OH)2 1.743(1) 2.869(1) 2.651(0.7) Sonolite Mn9(SiO4)4(OH,F)2 1.744(1) 2.031(1) 2.062(1) IMA1999-042 ! Cu2Pb6Bi8S19 1.744(0.9) 2.61(0.8) 3.3(0.7) Bezsmertnovite Au4Cu(Te,Pb) 1.746(1) 2.896(0.9) 3.345(0.8) Platarsite (Pt,Rh,Ru)AsS 1.75(1) 1.9(0.7) 2.98(0.6) Malanite Cu(Pt,Ir)2S4 1.75(1) 2.6(0.8) 3.33(0.8) Varlamoffite * (Sn,Fe)(O,OH)2 1.75(1) 2.85(1) 2.43(0.7) Gehlenite Ca2Al(AlSi)O7 1.755(1) 1.852(0.9) 1.549(0.8) Polkanovite ! Rh12As7 1.755(1) 2.48(1) 3(0.8) Trustedtite Ni3Se4 1.758(1) 3(1) 1.009(0.9) Cuprorhodsite CuRh2S4 1.76(1) 3(1) 2.489(0.9) Cuproiridsite CuIr2S4 1.761(1) 3.3(1) 4.77(0.5) Kassite CaTi2O4(OH)2 1.763(1) 2.98(1) 2.459(0.9) Konderite PbCu3(Rh,Pt,Ir)8S16 1.763(1) 3.008(1) 1.918(0.8) Cobaltpentlandite Co9S8 1.765(1) 2.85(0.8) 3.24(0.6) Roshchinite Ag19Pb10Sb51S96 or Pb(Ag,Cu)2(Sb,As)5S10 1.765(1) 3(0.8) 5.8(0.8) Xingzhongite (Pb,Cu,Fe)(Ir,Pt,Rh)2S4 1.766(1) 2.667(1) 3.099(1) Yftisite-(Y) ? (Y,Dy,Er)4(Ti,Sn)O(SiO4)2(F,OH)6 1.768(1) 3.01(1) 2.5(0.8) Florensovite Cu(Cr1.5Sb0.5)S4 1.769(1) 2.501(0.9) 2.886(0.7) Tyrrellite (Cu,Co,Ni)3Se4 1.77(1) 3.02(0.8) 2.51(0.6) Daubreelite Fe++Cr2S4 1.774(1) 2.24(0.9) 3.02(0.9) IMA1997-029 Rh17S15 1.775(1) 3.03(0.8) 1.931(0.5) Pentlandite (Fe,Ni)9S8 1.776(1) 8.7(1) 3.07(0.9) Vozhminite (Ni,Co)4(As,Sb)S2 1.779(1) 2.89(0.9) 2.95(0.9) Weberite Na2MgAlF7 1.782(1) 2.332(0.8) 3.102(0.8) Welinite-III Mn++6(W++++++,Mg)2Si2(O,OH)14 1.782(1) 2.332(0.8) 3.102(0.8) Welinite-VIII (Mn++,Mg)3(W++++++,Mn+++)1-x(SiO4)(O,OH)3 (x=1/3) 1.7823(1) 3.393(0.89) 2.513(0.79) Manganhumite (Mn,Mg)7(SiO4)3(OH)2 1.796(1) 2.552(0.8) 2.873(0.8) Ribbeite (Mn++,Mg)5(SiO4)2(OH)2 1.797(1) 1.325(0.8) 2.222(0.8) Zoubekite AgPb4Sb4S10 1.798(1) 1.996(0.8) 3.443(0.2) Ertixiite Na2Si4O9 1.799(1) 2.86(0.8) 2.598(0.6) Alleghanyite Mn5(SiO4)2(OH)2 1.8(1) 2.02(1) 2.7(1) Wilkmanite Ni3Se4 1.801(1) 1.148(0.7) 2.98(0.6) Sperrylite PtAs2 1.801(1) 2.945(1) 1.537(0.9) Calzirtite CaZr3TiO9 1.804(1) 2.892(1) 3.707(0.6) Nordenskioldine CaSnB2O6 1.806(1) 2.557(1) 2.869(0.78) Jerrygibbsite (Mn,Zn)9(SiO4)4(OH)2 1.806(1) 2.877(0.9) 2.684(0.8) Leucophoenicite Mn7(SiO4)3(OH)2 1.81(1) 3.27(1) 3.16(0.9) Nasonite Pb6Ca4Si6O21Cl2 1.811(1) 2.644(1) 3.519(1) Chernovite-(Y) YAsO4 1.813(1) 1.146(0.9) 2.99(0.9) Tolovkite IrSbS 1.818(1) 3.12(0.8) 4.17(0.8) Tungusite Ca14(OH)8(Si8O20)3Fe++9(OH)14 1.819(1) 2.24(1) 3.17(1) Argentite * Ag2S 1.82(1) 3.445(0.89) 1.988(0.82) Rambergite ! MnS 1.828(1) 2.985(0.7) 2.372(0.6) Djerfisherite K6Na(Fe,Cu,Ni)25S26Cl 1.83(1) 2.81(1) 3.09(1) Plombierite Ca5H2Si6O18·6(H2O) (?) 1.83(1) 2.89(0.9) 1.66(0.8) Heazlewoodite Ni3S2 1.832(1) 2.93(0.9) 3.08(0.8) Betekhtinite Cu10(Fe,Pb)S6 1.834(1) 2.193(1) 3.261(0.9) Chukhrovite-(Y) Ca3(Y,Ce)Al2(SO4)F13·10(H2O) 1.835(1) 2.378(0.9) 2.996(0.9) Owensite (Ba,Pb)6(Cu,Fe,Ni)25S27 1.839(1) 7.67(1) 2.34(0.9) Chlormagaluminite (Mg,Fe++)4Al2(OH)12(Cl2,CO3)·2(H2O) 1.842(1) 2.637(0.9) 2.569(0.8) Zirsinalite Na6(Ca,Mn,Fe++)Zr[Si6O18] 1.849(1) 3.09(0.8) 4.6(0.8) Caledonite Pb5Cu2(CO3)(SO4)3(OH)6 1.85(1) 2.63(0.8) 2.69(0.8) Glaucochroite CaMnSiO4 1.854(1) 2.827(1) 3.014(1) Saryarkite-(Y) Ca(Y,Th)Al5(SiO4)2(PO4,SO4)2(OH)7·6(H2O) 1.856(1) 2.8(1) 3.5(1) Plattnerite PbO2 1.858(1) 3.17(1) 2.018(0.4) Argentopentlandite Ag(Fe,Ni)8S8 1.86(1) 2.75(0.7) 2.51(0.6) Changchengite ! IrBiS 1.867(1) 1.593(0.99) 2.642(0.65) Plumbomicrolite (Pb,Ca,U)2Ta2O6(OH) 1.867(1) 3.445(1) 1.97(0.9) Calciborite CaB2O4 1.87(1) 3.04(1) 1.59(0.5) Arsenosulvanite Cu3(As,V)S4 1.871(1) 1.964(0.9) 2.387(0.9) Djurleite Cu31S16 1.874(1) 1.471(0.69) 2.365(0.69) Brizziite-III NaSb+++++O3 1.874(1) 1.471(0.69) 2.365(0.69) Brizziite-VII NaSb+++++O3 1.875(1) 2.93(0.8) 1.812(0.7) Luberoite Pt5Se4 1.875(1) 3.198(1) 2.041(0.81) Palladseite Pd17Se15 1.877(1) 1.959(0.9) 1.998(0.8) Novakite (Cu,Ag)21As10 1.88(1) 1.9746(0.7) 2.403(0.7) Chalcocite Cu2S 1.886(1) 2.67(1) 7.57(1) Borcarite Ca4MgB4O6(OH)6(CO3)2 1.887(1) 4.897(1) 2.342(0.88) IMA1998-033 ! Zn2AlSb(OH)12 1.89(1) 1.83(0.9) 2(0.9) Synchysite-(Y) CaY(CO3)2F 1.89(1) 3.28(0.9) 2.54(0.6) Eglestonite Hg6Cl3O(OH) (?) 1.89(1) 3.7(0.8) 3.18(0.6) Gerasimovskite (Mn,Ca)(Nb,Ti)5O12·9(H2O) (?) 1.892(1) 1.98(1) 3.08(1) Hypercinnabar HgS 1.892(1) 3.79(1) 1.87(0.8) Osarsite (Os,Ru)AsS 1.899(1) 3.061(0.55) 2.767(0.35) Yarrowite Cu9S8 1.9(1) 2.5(1) 2.6(1) Hastite CoSe2 1.902(1) 3.335(0.8) 2.903(0.75) Reinhardbraunsite Ca5(SiO4)2(OH,F)2 1.904(1) 3.11(0.8) 1.625(0.4) Chatkalite Cu6Fe++Sn2S8 1.91(1) 2.211(1) 4.52(1) Hongshiite PtCu 1.91(1) 3.076(0.85) 2.777(0.3) Spionkopite Cu1.4S 1.915(1) 2.63(1) 2.67(0.8) Omeiite (Os,Ru)As2 1.916(1) 2.31(1) 2.047(0.99) Ekaterinite Ca2B4O7(Cl,OH)2·2(H2O) 1.918(1) 1.977(1) 2.11(0.4) Orcelite Ni5-xAs2 (x=0.23) 1.918(1) 2.174(1) 3.33(1) Genthelvite Zn4Be3(SiO4)3S 1.918(1) 2.71(0.5) 3.83(0.35) Neighborite NaMgF3 1.92(1) 1.095(0.9) 1.501(0.9) Anduoite (Ru,Os)As2 1.924(1) 1.977(1) 2.15(0.65) Perryite (Ni,Fe)8(Si,P)3 1.925(1) 3.145(0.9) 3.282(0.9) Geffroyite (Ag,Cu,Fe)9(Se,S)8 1.926(1) 1.469(0.9) 2.366(0.9) Satpaevite Al12V++++2V+++++6O37·30(H2O) 1.93(1) 1.132(0.9) 1.235(0.8) Gaotaiite Ir3Te8 1.93(1) 2.92(0.6) 8.12(0.6) Bultfonteinite Ca2SiO2(OH,F)4 1.93(1) 2.98(1) 3.27(1) Juanite Ca10Mg4Al2Si11O39·4(H2O) (?) 1.931(1) 3.153(0.94) 1.647(0.35) Fluorite CaF2 1.933(1) 2.375(0.9) 1.857(0.8) Roxbyite Cu1.78S 1.937(1) 3.18(0.6) 2.74(0.5) Bornite Cu5FeS4 1.937(1) 3.21(1) 2.01(0.9) Huanghoite-(Ce) BaCe(CO3)2F 1.94(1) 1.72(0.6) 2.92(0.4) Geversite Pt(Sb,Bi)2 1.94(1) 4.086(0.51) 2.436(0.39) Stalderite TlCu(Zn,Fe,Hg)2As2S6 1.941(1) 2.747(0.95) 3.883(0.6) Cryolite Na3AlF6 1.942(1) 2.63(1) 2.53(0.8) Oenite ! CoSbAs 1.945(1) 2.4(1) 3.02(1) Chvilevaite Na(Cu,Fe,Zn)2S2 1.948(1) 2.78(1) 3.43(0.75) Bastnasite-(Y) Y(CO3)F 1.952(1) 3.18(1) 1.671(0.5) Mgriite Cu3AsS3 1.955(1) 1.25(0.8) 1.735(0.8) Mayingite IrBiTe 1.956(1) 2.742(1) 2.688(0.8) Chrisstanleyite ! Ag2Pd3Se4 1.96(1) 2.21(0.8) 4.29(0.8) Cryolithionite Na3Li3Al2F12 1.96(1) 2.77(0.65) 3.2(0.57) Anilite Cu7S4 1.96(1) 3.19(0.95) 1.671(0.8) Eskebornite CuFeSe2 1.965(1) 3.058(1) 3.24(1) Fergusonite-beta-(Ce) (Ce,La,Nd)NbO4 1.973(1) 2.79(0.4) 3.21(0.4) Digenite Cu9S5 1.976(1) 1.297(0.6) 2.087(0.6) Hexaferrum ! (Fe,Os,Ru,Ir) 1.979(1) 2.103(1) 3.216(1) Zhonghuacerite-(Ce) ! Ba2Ce(CO3)3F 1.982(1) 2.917(0.9) 2.846(0.6) Larosite (Cu,Ag)21(Pb,Bi)2S13 1.988(1) 2.65(1) 2.19(0.7) Majakite PdNiAs 1.989(1) 2.11(0.4) 2.25(0.2) Algodonite Cu6As 1.99(1) 2.435(1) 1.42(0.6) Surinamite (Mg,Fe++)3Al4BeSi3O16 1.99(1) 2.7(0.8) 2.96(0.8) Insizwaite Pt(Bi,Sb)2 2(1) 1.92(0.8) 1.94(0.8) Xifengite Fe5Si3 2(1) 3.38(1) 3.4(1) Ardaite Pb19Sb13S35Cl7 2.001(1) 2.044(0.9) 2.089(0.8) Koutekite Cu5As2 2.003(1) 2.97(1) 1.778(0.8) Michenerite (Pd,Pt)BiTe 2.005(1) 1.16(0.3) 1.41(0.1) Suessite (Fe,Ni)3Si 2.006(1) 2.362(1) 4.232(1) Khaidarkanite ! Na0.34Cu4Al3(OH)14F3·2H2O 2.01(1) 2.06(0.7) 2.38(0.65) Cohenite (Fe,Ni,Co)3C 2.01(1) 2.32(0.9) 1.424(0.5) Griceite LiF 2.01(1) 2.791(0.5) 2.508(0.4) Sheldrickite NaCa3(CO3)2F3·(H2O) 2.01(1) 2.98(0.75) 3.33(0.7) Aurostibite AuSb2 2.017(1) 3.11(1) 2.786(0.8) Bariosincosite ! Ba(V++++O)2(PO4)2·4(H2O) 2.02(1) 2.09(1) 2.35(1) Calcio-ancylite-(Ce) CaCe(CO3)2(OH)·(H2O) 2.02(1) 2.81(0.7) 3.11(0.7) Korzhinskite CaB2O4·(H2O) 2.02(1) 3.32(0.9) 1.726(0.8) Berzelianite Cu2Se 2.023(1) 2.863(1) 3.53(0.5) Mummeite Ag3CuPbBi6S13 or Ag2Cu2Pb2Bi6S13 2.0268(1) 1.1702(0.3) 1.4332(0.2) Iron ! Fe 2.03(1) 1.967(0.6) 1.435(0.3) Kamacite alpha-(Fe,Ni) 2.03(1) 2.85(1) 3.54(0.8) Thorbastnasite Th(Ca,Ce)(CO3)2F2·3(H2O) 2.03(1) 2.86(0.7) 3.52(0.6) Vulcanite CuTe 2.034(1) 1.762(0.42) 1.246(0.21) Nickel Ni 2.039(1) 1.177(0.3) 0.912(0.2) Chromium Cr 2.04(1) 1.17(0.9) 0.77(0.8) Ferchromide Cr3Fe1-x(x=0,6) 2.04(1) 5.1(1) 10.1(0.6) Uranocircite Ba(UO2)2(PO4)2·12(H2O) 2.05(1) 1.347(0.8) 2.19(0.7) Jedwabite Fe7(Ta,Nb)3 2.05(1) 1.888(0.7) 1.965(0.5) Domeykite Cu3As 2.05(1) 2.17(0.5) 2.38(0.3) Isovite ! (Cr,Fe)23C6 2.05(1) 3.09(1) 3.47(1) Sulfoborite Mg3B2(SO4)(OH)8(OH,F)2 2.056(1) 2.343(0.4) 2.142(0.35) Ruthenium (Ru,Ir,Os) 2.057(1) 2.635(0.9) 2.966(0.9) Pyrrhotite Fe(1-x)S (x=0-0.17) 2.058(1) 3.044(0.7) 2.72(0.5) Boracite Mg3B7O13Cl 2.06(1) 1.261(0.25) 1.0754(0.16) Diamond C 2.06(1) 1.72(0.75) 2.64(0.75) Heideite (Fe,Cr)1+x(Ti,Fe)2S4 2.06(1) 1.78(0.3) 1.26(0.2) Awaruite Ni2Fe to Ni3Fe 2.06(1) 2.19(1) 1.26(0.75) Lonsdaleite C 2.06(1) 3.38(0.8) 1.763(0.7) Bellidoite Cu2Se 2.06(1) 3.76(0.8) 2.329(0.6) Aerugite ([ ],Ni)9(AsO4)2(AsO6) (?) 2.061(1) 2.337(0.91) 2.189(0.61) Bromellite BeO 2.061(1) 2.696(0.7) 2.124(0.5) Ruthenarsenite (Ru,Ni)As 2.065(1) 3.003(0.9) 3.326(0.9) Itoite Pb3Ge(SO4)2O2(OH)2 2.07(1) 2.56(0.5) 2.82(0.4) Cuprostibite Cu2(Sb,Tl) 2.07(1) 3.19(1) 3.5(1) Banalsite BaNa2Al4Si4O16 2.07(1) 3.35(0.6) 2.55(0.4) Rickardite Cu7Te5 2.076(1) 2.858(0.7) 4.85(0.65) Shomiokite-(Y) Na3Y(CO3)3·3(H2O) 2.078(1) 2.259(1) 2.702(0.9) Kutinaite Cu2AgAs 2.0803(1) 1.3732(0.4) 2.1574(0.4) Danbaite CuZn2 2.085(1) 2.552(0.9) 1.601(0.8) Corundum Al2O3 2.088(1) 1.808(0.46) 1.278(0.2) Copper Cu 2.088(1) 2.41(0.91) 1.476(0.57) Bunsenite NiO 2.089(1) 1.201(0.8) 1.044(0.6) Zhanghengite (Cu,Zn,Fe,Al,Cr) 2.09(1) 2.01(0.7) 3.61(0.7) Weissite Cu1.9Te 2.09(1) 2.66(0.6) 1.72(0.5) Troilite FeS 2.09(1) 2.93(0.8) 2.98(0.8) Montbrayite (Au,Sb)2Te3 2.091(1) 2.473(0.53) 2.308(0.4) Zinc Zn 2.096(1) 1.665(0.8) 6.11(0.8) Edgarite ! FeNb3S6 2.1(1) 2.153(0.8) 1.815(0.7) Tongxinite * Cu2Zn 2.105(1) 2.226(0.34) 2.388(0.32) Rhenium * Re 2.106(1) 1.489(0.52) 1.216(0.12) Periclase MgO 2.115(1) 2.355(0.8) 1.351(0.5) Stillwaterite Pd8As3 2.118(1) 3.456(1) 1.804(0.6) Cameronite AgCu7Te10 2.119(1) 2.314(1) 1.991(0.7) Oregonite Ni2FeAs2 2.12(1) 2.4492(0.72) 1.4997(0.45) Osbornite TiN 2.13(1) 2.34(0.6) 1.41(0.4) Arsenopalladinite Pd8(As,Sb)3 2.13(1) 7.61(1) 2.97(0.9) Uralborite CaB2O2(OH)4 2.131(1) 2.875(1) 3.39(1) Crichtonite (Sr,Ba,REE)(Ti,Fe+++,Mn)21O38 2.134(1) 2.332(1) 3.01(1) Nabiasite BaMn9[(V,As)O4]6(OH)2 2.14(1) 1.62(0.9) 3.24(0.7) Sinhalite MgAlBO4 2.14(1) 2.21(0.9) 2.6(0.7) Palladoarsenide Pd2As 2.144(1) 1.081(0.8) 1.529(0.7) Hongquiite * TiO 2.146(1) 1.518(0.8) 2.476(0.7) Wustite FeO 2.15(1) 2.29(0.55) 2.36(0.4) Taimyrite (Pd,Cu,Pt)3Sn 2.151(1) 2.356(1) 1.863(0.8) Haxonite (Fe,Ni)23C6 2.156(1) 3.043(0.8) 7.03(0.6) Henryite Cu4Ag3Te4 2.16(1) 2.55(0.8) 3.03(0.7) Stutzite Ag7Te4 2.16(1) 3.93(0.75) 2.78(0.63) Antarcticite CaCl2·6(H2O) 2.166(1) 3.387(1) 1.925(0.8) Stenonite (Sr,Ba,Na)2Al(CO3)F5 2.167(1) 2.356(0.9) 0.86(0.8) Isomertieite Pd11Sb2As2 2.17(1) 1.995(0.7) 1.955(0.7) Nickelphosphide ! (Ni,Fe)3P 2.172(1) 2.708(1) 2.648(0.9) Crawfordite Na3Sr(PO4)(CO3) 2.176(1) 2.544(0.9) 3.146(0.9) Ungarettiite NaNa2(Mn++2Mn+++3)Si8O22O2 2.179(1) 1.094(0.8) 1.163(0.8) Tulameenite Pt2FeCu 2.18(1) 2.23(1) 2.67(1) Kotoite Mg3B2O6 2.19(1) 1.972(0.7) 2.1(0.7) Schreibersite (Fe,Ni)3P 2.19(1) 2.09(0.8) 1.56(0.5) Cesarolite PbH2Mn++++3O8 2.191(1) 1.144(0.85) 1.897(0.75) Roaldite Fe4N 2.191(1) 1.92(0.7) 1.342(0.6) Tetraferroplatinum PtFe 2.191(1) 2.281(0.9) 1.23(0.6) Mertieite-II Pd8(Sb,As)3 2.192(1) 1.935(0.5) 1.324(0.4) Ferronickelplatinum Pt2FeNi 2.192(1) 3.027(1) 2.088(0.8) Stumpflite Pt(Sb,Bi) 2.194(1) 2.27(1) 1.577(0.5) Stibiopalladinite Pd5Sb2 2.196(1) 1.734(0.9) 7.84(0.9) Solongoite Ca2B3O4(OH)4Cl 2.2(1) 2.27(1) 1.58(0.7) Stannopalladinite (Pd,Cu)3Sn2 (?) 2.2(1) 3.78(0.7) 4.26(0.5) Tsnigriite Ag9SbTe3(S,Se)3 2.209(1) 2.746(1) 2.09(0.9) Hsianghualite Ca3Li2Be3(SiO4)3F2 2.21(1) 2.83(0.92) 2.25(0.87) Karlite (Mg,Al)6(BO3)3(OH,Cl)4 2.217(1) 1.9197(0.5) 1.1574(0.45) Iridium (Ir,Os,Ru) 2.218(1) 2.159(0.57) 3.087(0.38) Yuanjiangite AuSn 2.22(1) 1.986(0.4) 2.5(0.4) Palarstanide Pd8(Sn,As)3 2.22(1) 2.38(1) 1.24(0.8) Goldamalgam * (Au,Ag)Hg 2.22(1) 2.52(0.42) 2.98(0.25) Kolymite Cu7Hg6 2.22(1) 2.71(1) 2.29(0.8) Marokite CaMn+++2O4 2.22(1) 2.98(1) 5.74(0.9) Svanbergite SrAl3(PO4)(SO4)(OH)6 2.221(1) 2.227(1) 2.523(1) Belendorffite Cu7Hg6 2.222(1) 4.71(0.9) 4.35(0.7) Bayerite Al(OH)3 2.223(1) 1.571(0.6) 2.568(0.6) Manganosite MnO 2.23(1) 1.92(0.7) 1.94(0.7) Auricupride Cu3Au 2.23(1) 2.3(1) 1.207(0.6) Plumbopalladinite Pd3Pb2 2.232(1) 2.083(0.9) 2.485(0.9) Palladobismutharsenide Pd2(As,Bi) 2.233(1) 2.045(0.68) 1.923(0.42) Barringerite (Fe,Ni)2P 2.237(1) 1.306(0.5) 2.09(0.4) Telluropalladinite Pd9Te4 2.237(1) 2.067(0.8) 2.426(0.7) Rhodarsenide ! (Rh,Pd)2As 2.237(1) 6.73(0.7) 2.975(0.6) Parasibirskite ! Ca2B2O5·(H2O) 2.238(1) 2.12(0.8) 2.073(0.7) IMA2000-038 ! (Fe,Ni)2P 2.238(1) 2.97(0.9) 3.15(0.8) Jordanite Pb14(As,Sb)6S23 2.24(1) 1.331(0.3) 2.364(0.3) Titanium * Ti 2.241(1) 4.21(1) 1.726(0.75) Gatumbaite CaAl2(PO4)2(OH)2·(H2O) 2.243(1) 0.9396(0.9) 1.3593(0.8) Weishanite (Au,Ag)3Hg2 2.246(1) 1.945(0.42) 1.376(0.25) Palladium Pd or (Pd,Hg) 2.246(1) 3.072(1) 2.112(0.8) Laitakarite Bi4(Se,S)3 2.25(1) 1.299(0.8) 1.92(0.6) Damiaoite ! PtIn2 2.251(1) 3.093(0.4) 2.127(0.2) Poubaite PbBi2Se2(Te,S)2 2.252(1) 2.272(1) 1.737(0.95) Chondrodite (Mg,Fe++)5(SiO4)2(F,OH)2 2.256(1) 1.479(0.7) 2.438(0.7) Humite (Mg,Fe++)7(SiO4)3(F,OH)2 2.26(1) 2.16(0.9) 0.791(0.4) Keithconnite Pd20Te7 2.26(1) 3.07(1) 2.11(0.9) Sobolevskite PdBi 2.265(1) 1.962(0.53) 1.1826(0.33) Platinum Pt 2.265(1) 3.02(0.9) 1.934(0.6) Genkinite (Pt,Pd)4Sb3 2.267(1) 1.263(0.6) 2.404(0.6) Paraschachnerite Ag3Hg2 2.269(1) 3.72(0.95) 2.259(0.95) Hydroxylclinohumite ! Mg9(SiO4)4(OH,F)2 2.273(1) 0.8595(0.6) 2.42(0.5) Schachnerite Ag1.1Hg0.9 2.279(1) 2.171(0.9) 2.232(0.65) Mertieite-I Pd11(Sb,As)4 2.28(1) 2.16(0.7) 1.955(0.5) Paolovite Pd2Sn 2.281(1) 3.325(0.8) 1.795(0.78) Malladrite Na2SiF6 2.283(1) 2.163(0.4) 1.369(0.3) Tatyanaite ! (Pt,Pd,Cu)9Cu3Sn4 2.29(1) 1.37(0.4) 2.42(0.4) Dyscrasite Ag3Sb 2.29(1) 2.17(0.9) 1.23(0.8) Cabriite Pd2SnCu 2.29(1) 8(1) 13.7(1) Connellite Cu19Cl4(SO4)(OH)32·3(H2O) 2.292(1) 3.1(1) 2.111(0.75) Tetradymite Bi2Te2S 2.292(1) 3.314(1) 5.507(1) Diaboleite Pb2CuCl2(OH)4 2.3(1) 1.203(0.8) 1.99(0.6) Yixunite ! Pt3In 2.3(1) 1.728(0.9) 2.8(0.8) Amakinite (Fe++,Mg)(OH)2 2.3(1) 2.23(0.8) 1.193(0.7) Tongbaite Cr3C2 2.3(1) 2.4(1) 2.7(1) Bornhardtite Co++Co+++2Se4 2.3(1) 3.34(1) 3.56(0.8) Alamosite PbSiO3 2.301(1) 2.188(0.88) 2.307(0.47) Florenskyite ! (Fe,Ni)TiP 2.305(1) 2.707(0.8) 2.602(0.7) Franklinfurnaceite Ca2(Fe+++,Al)Mn+++Mn++3Zn2Si2O10(OH)8 2.308(1) 4.61(0.8) 1.746(0.6) Muskoxite Mg7Fe+++4O13·10(H2O) 2.31(1) 2.87(0.8) 2.25(0.7) Hessite Ag2Te 2.315(1) 1.207(0.9) 2.011(0.8) Zvyagintsevite (Pd,Pt,Au)3(Pb,Sn) 2.315(1) 3.43(0.7) 2.81(0.4) Averievite ! Cu5(VO4)2O2·CuCl2 2.315(1) 3.52(0.9) 4.7(0.9) Cookeite LiAl4(Si3Al)O10(OH)8 2.319(1) 1.639(0.6) 1.338(0.17) Villiaumite NaF 2.325(1) 2.63(1) 2.88(1) Makinenite NiSe 2.33(1) 4.71(1) 3.98(0.9) Donbassite * Al2[Al2.33][Si3AlO10](OH)8 2.331(1) 2.55(0.4) 2.79(0.3) Cadmium Cd 2.331(1) 2.844(0.9) 3.105(0.9) Franciscanite-III Mn++6V+++++2Si2(O,OH)14 2.331(1) 3.105(0.9) 2.844(0.9) Franciscanite-VIII Mn++3(V+++++,[ ])1-x(SiO4)(O,OH)3(x=0.5) 2.335(1) 4.61(0.95) 1.755(0.5) Theophrastite Ni(OH)2 2.34(1) 1.274(0.8) 1.402(0.55) Potarite PdHg 2.34(1) 2.19(1) 2.06(1) Siderazot Fe5N2 2.34(1) 4.01(1) 3.64(0.9) Beryllite Be3SiO4(OH)2·(H2O) 2.34(1) 4.16(1) 3.19(0.8) Widenmannite Pb2(UO2)(CO3)3 2.345(1) 2.74(0.9) 2.794(0.9) Jalpaite Ag3CuS2 2.354(1) 2.674(0.9) 7.03(0.85) Tuliokite BaNa6Th(CO3)6·6(H2O) 2.355(1) 2.039(0.52) 1.23(0.36) Gold Au 2.359(1) 2.044(0.4) 1.231(0.26) Silver Ag 2.36(1) 1.224(0.9) 2.04(0.7) Aluminum Al 2.36(1) 1.23(0.8) 2.045(0.6) Bogdanovite (Au,Te,Pb)3(Cu,Fe) 2.36(1) 1.365(0.7) 1.236(0.6) Moschellandsbergite Ag2Hg3 2.365(1) 4.77(0.9) 1.794(0.55) Brucite Mg(OH)2 2.37(1) 0.95(0.8) 2.1(0.8) Eugenite Ag9Hg2 2.37(1) 1.232(0.8) 2.05(0.7) Bilibinskite Au3Cu2PbTe2 2.37(1) 2.252(0.6) 2.548(0.4) Allargentum Ag1-xSbx(x=0.009-0.16) 2.37(1) 2.93(0.6) 2.14(0.5) Hibbingite (Fe,Mg)2(OH)3Cl 2.372(1) 4.83(0.9) 2.657(0.8) Cumengite Pb21Cu20Cl42(OH)40 2.373(1) 6.46(0.76) 2.845(0.55) Drysdallite Mo(Se,S)2 2.379(1) 2.572(0.8) 2.597(0.55) Safflorite (Co,Fe)As2 2.38(1) 2.74(0.8) 2.6(0.6) Poyarkovite Hg3ClO 2.38(1) 3.93(0.9) 3.8(0.8) Behoite Be(OH)2 2.384(1) 2.808(0.8) 3.176(0.8) Karibibite Fe+++2As+++4(O,OH)9 2.386(1) 5.7(0.8) 5.36(0.7) Kempite Mn2Cl(OH)3 2.389(1) 2.1(0.8) 3.638(0.8) Vasilite (Pd,Cu)16(S,Te)7 2.39(1) 2.15(0.6) 3.11(0.6) Vernadite (Mn++++,Fe+++,Ca,Na)(O,OH)2·n(H2O) 2.39(1) 2.62(1) 1.765(0.9) Trogtalite CoSe2 2.39(1) 2.763(1) 3.739(0.8) Buckhornite AuPb2BiTe2S3 2.391(1) 2.81(0.3) 1.196(0.26) Hunchunite (Au,Ag)2Pb 2.393(1) 3.078(1) 3.8(0.9) Rohaite Tl2Cu8,5Sb2S4 2.399(1) 1.654(0.8) 3.11(0.8) Cryptomelane K(Mn++++,Mn++)8O16 2.405(1) 1.701(0.45) 2.778(0.34) Lime CaO 2.406(1) 7.017(0.98) 3.136(0.92) Manjiroite (Na,K)(Mn++++,Mn++)8O16·n(H2O) 2.408(1) 1.419(0.8) 2.052(0.7) Musgravite (Mg,Fe++,Zn)2Al6BeO12 2.41(1) 1.537(0.6) 2.3(0.5) Maldonite Au2Bi 2.41(1) 2.19(0.85) 3.48(0.6) Romanechite (Ba,H2O)2(Mn++++,Mn+++)5O10 2.41(1) 4.47(1) 3.132(0.3) Reichenbachite Cu++5(PO4)2(OH)4 2.42(1) 1.425(0.8) 2.6(0.8) Zincohogbomite ! (Zn,Fe++)(2-2x)(Ti)xAl4O8 2.42(1) 2.1(0.5) 3.05(0.4) Telargpalite (Pd,Ag)3Te 2.42(1) 2.71(1) 2.85(0.8) Crednerite CuMnO2 2.42(1) 2.85(0.9) 1.55(0.6) Nigerite-6H (Zn,Mg,Fe++)(Sn,Zn)2(Al,Fe+++)12O22(OH)2 2.422(1) 2.856(0.8) 1.426(0.5) Pehrmanite (Fe++,Zn,Mg)2Al6BeO12 2.423(1) 2.246(0.9) 1.371(0.8) Atheneite (Pd,Hg)3As 2.423(1) 2.846(0.9) 1.414(0.5) Pengzhizhongite-24R (Mg,Zn,Fe+++,Al)4(Sn,Fe+++)2Al10O22(OH)2 2.423(1) 2.846(0.9) 1.414(0.5) Pengzhizhongite-6H (Mg,Zn,Fe+++,Al)4(Sn,Fe+++)2Al10O22(OH)2 2.43(1) 1.426(0.8) 1.436(0.6) Hogbomite-4H-5H-6H-15H (Mg,Fe++)1.4Ti0.3Al4O8 2.43(1) 1.428(0.8) 2.05(0.8) Taaffeite Mg3Al8BeO16 2.43(1) 1.43(0.5) 2.6(0.5) Hogbomite-8H (Al,Fe++,Fe+++,Mg,Ti,Zn)11O15(OH) 2.43(1) 2.24(0.5) 1.838(0.3) Palladodymite (Pd,Rh)2As 2.43(1) 2.88(0.5) 1.48(0.4) Aguilarite Ag4SeS 2.43(1) 3.24(1) 8.27(1) Calclacite Ca[Cl2/CH3COO]·10(H2O) 2.43(1) 3.469(0.9) 2.744(0.85) Liebenbergite (Ni,Mg)2SiO4 2.435(1) 1.869(0.9) 5.71(0.8) Dayingite * CuCoPtS4 2.436(1) 2.021(0.7) 1.429(0.6) Spinel MgAl2O4 2.438(1) 2.861(0.84) 1.429(0.43) Gahnite ZnAl2O4 2.438(1) 3.722(0.9) 3.475(0.5) Holtedahlite Mg12(PO3OH,CO3)(PO4)5(OH,O)6 2.44(1) 1.434(0.6) 2.87(0.6) Hogbomite-15R-18R-24R (Mg,Fe++)1.4Ti0.3Al4O8 2.44(1) 4.3(1) 11.5(1) Ilmajokite (Na,REE,Ba)2TiSi3O5(OH)10·n(H2O) (?) 2.4446(1) 2.0106(0.85) 2.01(0.61) Khmaralite ! (Mg,Al,Fe)16(Al,Si,Be)12O40 2.445(1) 4.82(1) 9.6(1) Asbolane (Co,Ni)1-y(Mn++++O2)2-x(OH)2-2y+2x·n(H2O) 2.447(1) 1.434(0.58) 2.028(0.58) Ringwoodite Mg2SiO4 2.448(1) 2.952(1) 4.37(0.7) Purpurite Mn+++PO4 2.45(1) 1.97(0.6) 2.25(0.6) Ferrihydrite Fe+++2O3·0.5(H2O) 2.45(1) 2.04(0.7) 1.44(0.6) Wadsleyite (Mg,Fe++)2SiO4 2.45(1) 2.68(1) 1.806(0.9) Penroseite (Ni,Co,Cu)Se2 2.45(1) 2.97(0.9) 4.9(0.9) Adamite Zn2(AsO4)(OH) 2.45(1) 4.72(0.9) 1.826(0.6) Pyrochroite Mn(OH)2 2.452(1) 4.31(0.9) 3.46(0.85) Heterosite Fe+++PO4 2.453(1) 2.589(0.9) 2.743(0.9) IMA2000-037 ! Ca19(Al,Mg)13[SiO4]10[Si2O7]4(F,OH)10 2.458(1) 2.512(0.7) 3.883(0.7) Forsterite Mg2SiO4 2.4597(1) 1.4414(0.42) 1.5691(0.36) Hercynite Fe++Al2O4 2.46(1) 2.62(1) 2.95(1) Gaudefroyite Ca4Mn+++3-x(BO3)3(CO3)(O,OH)3 2.462(1) 2.707(0.9) 3.04(0.8) Hetaerolite ZnMn+++2O4 2.465(1) 2.135(0.37) 1.51(0.27) Cuprite Cu2O 2.47(1) 1.646(0.45) 2.85(0.4) Mcconnellite CuCrO2 2.47(1) 2.66(0.8) 3.02(0.7) Hydrohetaerolite Zn2Mn+++4O8·(H2O) 2.472(1) 2.26(0.9) 2.022(0.6) Oulankaite (Pd,Pt)5(Cu,Fe)4SnTe2S2 2.473(1) 2.84(0.8) 3.52(0.7) Satterlyite (Fe++,Mg)2(PO4)(OH) 2.476(1) 2.816(0.71) 2.602(0.56) Zincite (Zn,Mn)O 2.477(1) 2.626(1) 2.439(0.8) Menshikovite Pb3NiAs3 2.48(1) 2.69(1) 8(0.8) Northupite Na3Mg(CO3)2Cl 2.48(1) 4.02(1) 2.76(0.9) Chkalovite Na2BeSi2O6 2.489(1) 2.562(1) 4.72(1) Cornubite Cu5(AsO4)2(OH)4 2.49(1) 1.466(0.7) 1.593(0.6) Magnesiochromite MgCr2O4 2.49(1) 2.77(0.9) 1.544(0.8) Hausmannite Mn++Mn+++2O4 2.49(1) 3.336(1) 4.8(0.8) Parakhinite Cu++3PbTe++++++O4(OH)6 2.491(1) 3.451(0.9) 4.866(0.8) Khinite PbCu++3Te++++++O6(OH)2 2.492(1) 2.921(0.6) 1.46(0.45) Galaxite (Mn,Mg)(Al,Fe+++)2O4 2.494(1) 2.628(0.59) 2.89(0.5) Eucairite CuAgSe 2.5(1) 2.07(0.8) 2.93(0.6) Coulsonite Fe++V+++2O4 2.5(1) 2.95(0.9) 2.55(0.7) Furutobeite (Cu,Ag)6PbS4 2.501(1) 2.655(0.9) 2.893(0.8) Krinovite NaMg2CrSi3O10 2.501(1) 4.52(0.85) 14.2(0.8) Sudoite Mg2(Al,Fe+++)3Si3AlO10(OH)8 2.505(1) 2.648(0.8) 2.812(0.6) Hibonite (Ca,Ce)(Al,Ti,Mg)12O19 2.508(1) 1.512(0.4) 2.86(0.35) Delafossite Cu+Fe+++O2 2.51(1) 2.65(0.9) 2.57(0.8) Pirssonite Na2Ca(CO3)2·2(H2O) 2.51(1) 2.7(0.9) 5.42(0.8) Pinakiolite Mg2Mn+++O2(BO3) 2.51(1) 2.95(0.55) 1.472(0.5) Nichromite (Ni,Co,Fe++)(Cr,Fe+++,Al)2O4 2.51(1) 3.26(1) 2.81(0.6) Terlinguaite Hg+Hg++ClO 2.51(1) 6(0.55) 2.59(0.45) Rinneite K3NaFe++Cl6 2.512(1) 1.4721(0.45) 2.947(0.35) Cochromite (Co,Ni,Fe++)(Cr,Al)2O4 2.513(1) 1.476(0.4) 1.605(0.3) Trevorite NiFe+++2O4 2.513(1) 3.421(0.7) 5.92(0.6) Weinebeneite CaBe3(PO4)2(OH)2·5(H2O) 2.514(1) 2.548(1) 5.1(0.5) Bonaccordite Ni2Fe+++BO5 2.517(1) 1.479(0.6) 2.96(0.5) Cuprospinel (Cu,Mg)Fe+++2O4 2.519(1) 2.954(0.5) 1.476(0.35) Zincochromite ZnCr2O4 2.52(1) 1.46(0.9) 1.6(0.9) Chromite Fe++Cr2O4 2.52(1) 1.582(0.9) 4.84(0.9) Magnesiocoulsonite MgV++++2O4 2.52(1) 2.32(0.96) 2.53(0.49) Tenorite CuO 2.52(1) 2.67(1) 2.98(1) Hydrohalite NaCl·2(H2O) 2.52(1) 2.96(1) 2.87(0.8) Natalyite Na(V+++,Cr+++)Si2O6 2.52(1) 3.04(1) 4.36(1) Zemkorite Na2Ca(CO3)2 2.52(1) 3.1(1) 2.83(0.9) Homilite Ca2(Fe++,Mg)B2Si2O10 2.52(0.4) 3.41(0.4) 9.97(0.4) Montdorite (K,Na)(Fe++,Mn++,Mg)2.5[Si4O10](F,OH)2 2.52(1) 3.47(0.9) 2.78(0.8) Laihunite Fe++Fe+++2(SiO4)2 2.52(1) 5.76(1) 3.7(0.8) Painite CaZrBAl9O18 2.521(1) 3.9(0.85) 2.678(0.5) Brochantite Cu4(SO4)(OH)6 2.522(1) 1.497(0.54) 2.673(0.44) IMA2000-036 ! Zn2Mg2Fe4Sb2O14(OH)2 2.522(1) 4.39(0.9) 3.203(0.8) Paragonite NaAl2(Si3Al)O10(OH)2 2.525(1) 2.96(0.4) 1.481(0.35) Magnesioferrite MgFe+++2O4 2.5293(1) 8.048(0.9) 2.0979(0.63) Hogtuvaite (Ca,Na)2(Fe++,Fe+++,Ti,Mg,Mn)6(Si,Be,Al)6O20 2.53(1) 1.483(0.85) 1.614(0.85) Magnetite Fe++Fe+++2O4 2.53(1) 1.486(0.6) 1.617(0.5) Qandilite (Mg,Fe++)2(Ti,Fe+++,Al)O4 2.53(1) 2.56(0.8) 2.9(0.8) Serendibite Ca2(Mg,Al)6(Si,Al,B)6O20 2.53(1) 2.75(0.8) 3.46(0.8) Xanthiosite Ni3(AsO4)2 2.53(1) 2.81(0.7) 4.86(0.6) Kuznetsovite Hg3Cl(AsO4) 2.53(1) 2.91(1) 3.73(0.8) Thalcusite TlCu3FeS4 2.53(1) 2.91(0.7) 7.324(0.7) Welshite Ca2Sb+++++Mg4Fe+++Si4Be2O20 2.53(1) 3.16(1) 3.3(1) Odintsovite K2Na4Ca3Ti2Be4Si12O38 2.53(1) 7.29(1) 3.61(0.8) Antigorite (Mg,Fe++)3Si2O5(OH)4 2.531(1) 2.422(0.8) 2.427(0.8) Clinosafflorite (Co,Fe,Ni)As2 2.5313(1) 2.8915(0.7) 4.139(0.5) Abhurite Sn3O(OH)2Cl2 2.532(1) 2.774(0.8) 4.39(0.8) Reederite-(Y) Na15Y2(CO3)9(SO3F)Cl 2.533(1) 1.462(0.35) 2.72(0.35) Macaulayite (Fe+++,Al)24Si4O43(OH)2 2.535(1) 3.502(0.85) 7(0.85) Kellyite (Mn++,Mg,Al)3(Si,Al)2O5(OH)4 2.536(1) 2.714(0.87) 3.361(0.71) Fangite Tl3AsS4 2.54(1) 1.47(0.8) 2.23(0.5) Feroxyhyte Fe+++O(OH) 2.54(1) 1.484(0.9) 1.615(0.7) Brunogeierite (Ge++,Fe++)Fe+++2O4 2.54(1) 1.8(0.63) 5.9(0.63) Lawrencite (Fe++,Ni)Cl2 2.54(1) 2.65(0.85) 3.89(0.48) Radtkeite Hg3S2ClI 2.54(1) 2.816(1) 3.528(1) Junitoite CaZn2Si2O7·(H2O) 2.54(1) 3.51(0.9) 4.29(0.9) Triphylite LiFe++PO4 2.54(1) 4.67(0.9) 5.21(0.8) Nastrophite Na(Sr,Ba)(PO4)·9(H2O) 2.545(1) 2.325(0.9) 1.716(0.8) Gersdorffite NiAsS 2.545(1) 2.64(1) 2.935(0.8) Kullerudite NiSe2 2.545(1) 2.828(0.88) 3.188(0.85) Cobaltlotharmeyerite ! Ca(Co,Fe,Ni)2(AsO4)2(OH,H2O)2 2.547(1) 1.486(0.9) 4.456(0.9) Saliotite Na0.5Li0.5Al3AlSi3O10(OH)5 2.547(1) 5.09(0.7) 5.75(0.7) Donharrisite Ni8Hg3S9 2.548(1) 3.051(0.9) 3.516(0.5) Lithiophilite LiMnPO4 2.549(1) 5.09(0.9) 5.89(0.9) Dumortierite Al6.5-7(BO3)(SiO4)3(O,OH)3 2.55(1) 1.499(0.8) 2.99(0.7) Franklinite (Zn,Mn++,Fe++)(Fe+++,Mn+++)2O4 2.55(1) 1.63(0.7) 1.5(0.6) Manganochromite (Mn,Fe++)(Cr,V)2O4 2.55(1) 2.61(1) 4.52(1) Beidellite Na0.5Al2(Si3.5Al0.5)O10(OH)2·n(H2O) 2.55(1) 2.69(0.8) 5.9(0.5) Chlormanganokalite K4MnCl6 2.55(1) 2.74(0.9) 2.8(0.8) Langbanite (Mn,Ca,Fe)++4(Mn+++,Fe+++)9Sb+++++Si2O24 2.55(1) 2.89(0.9) 2.6(0.8) Nierite Si3N4 2.55(1) 2.98(1) 1.955(0.9) Balkanite Cu9Ag5HgS8 2.55(1) 3.08(1) 3.48(0.9) Prehnite Ca2Al2Si3O10(OH)2 2.55(1) 3.39(0.46) 4.86(0.37) Schwertmannite Fe+++16O16(OH)12(SO4)2 2.55(1) 3.89(1) 2.81(0.8) Fiedlerite Pb3Cl4F(OH)2 2.55(1) 4.16(1) 12.3(1) Stilpnomelane K(Fe++,Mg,Fe+++,Al)8(Si,Al)12(O,OH)27·2(H2O) 2.551(1) 3.43(0.8) 3.95(0.7) Olenite NaAl3Al6(BO3)3(Si6O18)(O,OH)4 2.552(1) 1.677(0.6) 1.723(0.5) Nelenite (Mn,Fe++)16Si12As+++3O36(OH)17 2.552(1) 2.476(0.9) 2.843(0.65) Rammelsbergite NiAs2 2.555(1) 2.035(0.8) 5.813(0.8) Paracostibite CoSbS 2.556(1) 2.01(0.6) 2.823(0.5) Suanite Mg2B2O5 2.557(1) 3.175(0.9) 3.414(0.9) Lotharmeyerite CaZnMn+++(AsO3OH)4(OH)3 2.557(1) 6.81(0.45) 2.267(0.35) Rorisite (Ca,Mg)FCl 2.558(1) 3.119(1) 2.689(0.8) Harrisonite Ca(Fe++,Mg)6(PO4)2(SiO4)2 2.559(1) 1.502(0.8) 1.633(0.4) Vuorelainenite (Mn++,Fe++)(V+++,Cr+++)2O4 2.559(1) 2.521(0.95) 2.371(0.65) Pararammelsbergite NiAs2 2.559(1) 4.05(0.9) 12.2(0.8) Philipsburgite (Cu,Zn)6(AsO4,PO4)2(OH)6·(H2O) 2.56(1) 1.527(0.7) 1.662(0.6) Filipstadite (Mn++,Mg)4Sb+++++Fe+++O8 2.56(1) 1.912(0.8) 1.41(0.7) Gudmundite FeSbS 2.56(1) 2.21(0.85) 2.42(0.7) Pianlinite * Al2Si2O6(OH)2 2.56(1) 2.22(0.9) 1.574(0.8) Niobocarbide ! (Nb,Ta)C 2.56(1) 2.66(1) 2.23(0.6) Naumannite Ag2Se 2.56(1) 2.86(0.85) 3.61(0.85) Tephroite Mn2SiO4 2.56(1) 3.21(0.7) 2.11(0.7) Clintonite Ca(Mg,Al)3(Al3Si)O10(OH)2 2.56(1) 7.1(0.9) 3.548(0.6) Cronstedtite Fe++2Fe+++(SiFe+++)O5(OH)4 2.56(1) 7.16(0.7) 2.888(0.6) Mcgillite (Mn,Fe++)8Si6O15(OH)8Cl2 2.56(1) 7.17(0.9) 3.6(0.7) Friedelite Mn8Si6O15(OH,Cl)10 2.562(1) 4.96(0.7) 5.52(0.7) Shortite Na2Ca2(CO3)3 2.563(1) 1.503(0.4) 3.005(0.35) Jacobsite (Mn++,Fe++,Mg)(Fe+++,Mn+++)2O4 2.566(1) 1.504(0.63) 2.596(0.46) IMA2000-033 ! (Ba,Na,K)(Al,Mg)2(Si,Al)4O10(OH)2 2.567(1) 3.969(1) 4.211(0.9) Magnesiofoitite ! [ ](Mg2Al)Al6(Si6O18)(BO3)3(OH)4 2.569(1) 1.54(0.5) 2.873(0.4) Almandine Fe++3Al2(SiO4)3 2.57(1) 1.506(0.4) 3.016(0.4) Iwakiite Mn++(Fe+++,Mn+++)2O4 2.57(1) 4.176(0.38) 2.957(0.3) Yuanfuliite (Mg,Fe++)(Fe+++,Al,Mg,Ti,Fe++)(BO3)O 2.57(1) 5.07(0.8) 2.16(0.6) Azoproite (Mg,Fe++)2(Fe+++,Ti,Mg)BO5 2.573(1) 3.452(0.91) 6.338(0.84) Foitite [ ]Na<0.5(Fe++,Al)3Al6Si6O18(BO3)3(OH)4 2.574(1) 1.509(0.45) 1.643(0.35) Ulvospinel TiFe++2O4 2.574(1) 2.729(0.9) 2.707(0.8) Maricite NaFe++PO4 2.574(1) 2.911(0.7) 4.21(0.6) Ardennite (Mn++,Ca,Mg)4(Al,Mg,Fe)6(SiO4)2(Si3O10)(AsO4,VO4)(OH)6 2.575(1) 5.15(0.3) 1.536(0.17) Vonsenite Fe++2Fe+++BO5 2.576(1) 2.961(0.85) 3.99(0.85) Dravite NaMg3Al6(BO3)3Si6O18(OH)4 2.576(1) 2.961(0.85) 3.99(0.85) Elbaite Na(Li,Al)3Al6(BO3)3Si6O18(OH)4 2.576(1) 2.961(0.85) 3.99(0.85) Schorl NaFe++3Al6(BO3)3Si6O18(OH)4 2.578(1) 2.686(1) 1.435(0.9) Fluorocannilloite CaCa2(Mg4Al)Si5Al3O22F2 2.579(1) 2.557(0.9) 4.619(0.4) Nullaginite Ni2(CO3)(OH)2 2.58(1) 1.5(0.5) 1.6(0.5) Warwickite Mg(Ti,Fe+++,Al)(BO3)O 2.58(1) 2.108(0.56) 5.16(0.22) Sakhaite Ca3Mg(BO3)2(CO3)·0.36(H2O) 2.58(1) 2.93(1) 1.878(0.6) Sibirskite CaHBO3 2.58(1) 2.96(0.85) 3.99(0.85) Buergerite NaFe+++3Al6(BO3)3Si6O21F 2.58(1) 3.65(0.9) 3.11(0.51) Kenhsuite ! Hg3S2Cl2 2.58(1) 4.53(0.85) 3.64(0.8) Celadonite K(Mg,Fe++)(Fe+++,Al)[Si4O10](OH)2 2.581(1) 1.82(0.7) 3.66(0.5) Koashvite Na6(Ca,Mn)(Ti,Fe)Si6O18·(H2O) 2.581(1) 3.709(1) 3.799(1) Liberite Li2BeSiO4 2.582(1) 4.18(0.9) 2.531(0.7) Olympite LiNa5(PO4)2 2.584(1) 2.501(0.9) 2.927(0.9) Namansilite NaMn+++(Si2O6) 2.584(1) 5.558(0.86) 3.07(0.73) Mozartite CaMn+++SiO4(OH) 2.586(1) 2.979(0.8) 4.24(0.6) Feruvite (Ca,Na)(Fe,Mg,Ti)3(Al,Mg,Fe)6(BO3)3Si6O18(OH)4 2.587(1) 3.68(0.7) 2.516(0.4) Glaukosphaerite (Cu,Ni)2(CO3)(OH)2 2.588(1) 2.364(0.8) 1.546(0.6) Dzharkenite FeSe2 2.588(1) 4.54(0.93) 2.409(0.87) Chromceladonite ! KCrMg(Si4O10)(OH)2 2.589(1) 2.609(0.7) 3.006(0.7) Remondite-(Ce) Na3(Ce,La,Ca,Na,Sr)3(CO3)5 2.59(1) 2.14(0.9) 2.71(0.9) Penzhinite (Ag,Cu)4Au(S,Se)4 2.59(1) 2.2(0.9) 7.21(0.7) Greenalite (Fe++,Fe+++)2-3Si2O5(OH)4 2.59(1) 2.486(0.9) 5.16(0.8) Fredrikssonite Mg2(Mn+++,Fe+++)O2(BO3) 2.59(1) 2.49(0.85) 1.89(0.8) Ferroselite FeSe2 2.59(1) 3.29(1) 3(0.8) Crookesite Cu7(Tl,Ag)Se4 2.59(1) 3.92(1) 3.02(0.7) Fedorovskite Ca2(Mg,Mn)2B4O7(OH)6 2.59(1) 4.79(1) 9.54(1) Chalcophyllite Cu++18Al2(AsO4)3(SO4)3(OH)27·33(H2O) 2.592(1) 1.835(0.35) 2.193(0.35) Skutterudite (Co,Ni)As3-x 2.593(1) 1.746(0.8) 2.365(0.8) Krutovite NiAs2 2.596(1) 2.121(0.9) 3.04(0.8) IMA2000-021 ! Ca3(Si,Fe+++,Al)[SO4][B(OH)4](OH,O)6·12H2O 2.596(1) 2.503(0.9) 1.908(0.8) Costibite CoSbS 2.596(1) 2.531(0.85) 5.192(0.65) Orthopinakiolite (Mg,Mn++)2Mn+++BO5 2.598(1) 2.866(0.9) 5.36(0.8) Nabaphite NaBaPO4·9(H2O) 2.598(1) 2.891(0.7) 4.337(0.6) Frankhawthorneite Cu2Te++++++O4(OH)2 2.598(1) 4.171(0.7) 3.349(0.6) Chantalite CaAl2SiO4(OH)4 2.598(1) 9.326(0.85) 3.418(0.8) Gerstmannite (Mg,Mn)2ZnSiO4(OH)2 2.6(1) 1.56(0.4) 1.61(0.3) Spessartine Mn++3Al2(SiO4)3 2.6(1) 1.816(0.8) 2.52(0.8) Kazakovite Na6Mn++TiSi6O18 2.6(1) 1.91(0.8) 2.07(0.8) Caswellsilverite NaCrS2 2.6(1) 2.17(0.9) 6.1(0.7) Pokrovskite Mg2(CO3)(OH)2·0.5(H2O) 2.6(1) 2.443(0.6) 7.29(0.5) Dioptase CuSiO2(OH)2 2.6(1) 3.09(0.5) 3.8(0.3) Tachyhydrite CaMg2Cl6·12(H2O) 2.601(1) 1.8388(0.6) 1.501(0.16) Niningerite (Mg,Fe++,Mn)S 2.601(1) 2.13(0.6) 3.01(0.5) Calcioburbankite Na3(Ca,REE,Sr)3(CO3)5 2.602(1) 1.757(0.8) 2.378(0.8) Jolliffeite (Ni,Co)AsSe 2.602(1) 2.469(0.25) 2.731(0.25) Eitelite Na2Mg(CO3)2 2.603(1) 4.128(0.8) 3.711(0.65) Wycheproofite NaAlZr(PO4)2(OH)2·(H2O) 2.604(1) 1.988(0.5) 2.083(0.25) Westerveldite (Fe,Ni,Co)As 2.6047(1) 5.243(0.45) 2.27206(0.4) Blatterite (Mn++,Mg)35Sb3(Mn+++,Fe+++)9(BO3)16O32 2.606(1) 2.07(0.7) 3.508(0.6) Mckinstryite (Ag,Cu)2S 2.606(1) 2.44(0.8) 2.383(0.75) Acanthite Ag2S 2.607(1) 5.22(0.5) 3.7(0.4) Petersenite-(Ce) (Na,Ca)4(Ce,La,Nd,Sr,Pr,Sm,Ba)2(CO3)5 2.608(1) 1.515(0.8) 1.3111(0.25) Lourenswalsite (K,Ba)2(Ti,Mg,Ca,Fe)4(Si,Al,Fe)6O14(OH)12 2.608(1) 3.052(0.33) 1.6652(0.3) Tegengrenite ! (Mg,Mn++)2Sb+++++0.5(Mn+++,Si,Ti)0.5O4 2.61(1) 1.84(0.9) 2.13(0.8) Harkerite Ca24Mg8Al2(SiO4)8(BO3)6(CO3)10·2(H2O) 2.61(1) 2.07(0.8) 3.33(0.8) Stromeyerite AgCuS 2.61(1) 2.33(0.9) 1.638(0.8) Lollingite FeAs2 2.61(1) 2.78(1) 3.78(1) Hanksite KNa22(SO4)9(CO3)2Cl 2.61(1) 2.88(1) 4.15(0.75) Tangeite CaCu(VO4)(OH) 2.61(1) 3.01(0.6) 1.587(0.5) Lavrentievite Hg3S2(Cl,Br)2 2.61(1) 3.14(0.4) 2.11(0.3) Chlorocalcite KCaCl3 2.61(1) 3.25(1) 4.08(1) Thorosteenstrupine (Ca,Th,Mn)3Si4O11F·6(H2O) 2.612(1) 1.847(0.5) 1.509(0.2) Alabandite MnS 2.614(1) 2.84(0.9) 4.02(0.8) Aminoffite Ca3Be2Si3O10(OH)2 2.616(1) 1.636(0.65) 3.509(0.61) Akimotoite (Mg,Fe)SiO3 2.616(1) 2.765(0.85) 2.414(0.49) Hawthorneite Ba[Ti3Cr4Fe4Mg]O19 2.619(1) 4.26(0.8) 3.36(0.7) Plumbonacrite * Pb10(CO3)6O(OH)6 2.62(1) 2.07(0.9) 3.04(0.9) IMA1999-050 ! NaMg3V6(Si6O18)(BO3)3(OH)4 2.62(1) 2.91(1) 3.88(0.6) Kleinite Hg2N(Cl,SO4)·n(H2O) 2.62(1) 3.008(1) 2.104(0.6) Kornerupine (Mg,Fe++)4(Al,Fe+++)6(SiO4,BO4)5(O,OH)2 2.62(1) 3.03(0.6) 2.39(0.4) Coparsite Cu4O2[(As,V)O4]Cl 2.62(1) 3.04(0.75) 3.58(0.75) Chromdravite NaMg3(Cr,Fe+++)6(BO3)3Si6O18(OH)4 2.621(1) 2.39(0.7) 1.767(0.6) Willyamite (Co,Ni)SbS 2.622(1) 1.875(0.6) 1.959(0.6) Danielsite (Cu,Ag)14HgS8 2.623(1) 3.036(0.9) 2.143(0.8) Remondite-(La) ! Na3(La,Ce,Ca)3(CO3)5 2.623(1) 3.29(0.9) 3.61(0.9) Hydrocerussite Pb3(CO3)2(OH)2 2.624(1) 1.55(0.8) 2.726(0.7) Lawsonite CaAl2Si2O7(OH)2·(H2O) 2.624(1) 2.802(0.95) 2.612(0.9) Lindqvistite Pb2(Mn++,Mg)Fe+++16027 2.625(1) 2.679(0.9) 3.734(0.9) Brianite Na2CaMg(PO4)2 2.626(1) 3.02(0.86) 3.2(0.67) Panasqueiraite CaMg(PO4)(OH,F) 2.626(1) 3.151(0.9) 3.769(0.9) Nickelaustinite Ca(Ni,Zn)(AsO4)(OH) 2.628(1) 4.9(0.74) 1.927(0.42) Portlandite Ca(OH)2 2.63(1) 1.622(0.9) 2.78(0.9) Yimengite K(Cr,Ti,Fe,Mg)12O19 2.63(1) 1.853(0.7) 3.33(0.6) Imandrite Na12Ca3Fe+++2Si12O36 2.63(1) 1.89(0.6) 2.82(0.6) Hellandite-(Y) (Ca,Y)6(Al,Fe+++)Si4B4O20(OH)4 2.63(1) 2.77(1) 1.62(0.7) Magnetoplumbite Pb(Fe+++,Mn+++)12O19 2.63(1) 3.02(1) 3.19(1) Isokite CaMg(PO4)F 2.63(1) 3.12(1) 3.62(1) Garavellite FeSbBiS4 2.63(1) 3.68(1) 3.8(0.9) Loseyite (Mn,Zn)7(CO3)2(OH)10 2.63(1) 3.73(0.9) 5.29(0.8) Spertiniite Cu(OH)2 2.63(1) 4.05(0.9) 6.63(0.9) Povondraite (Na,K)(Fe+++,Fe++)3(Fe,Mg,Al)6(BO3)3Si6O18(OH)4 2.63(1) 4.81(1) 5.85(0.9) Libethenite Cu2(PO4)(OH) 2.631(1) 1.966(0.9) 1.77(0.8) Langisite (Co,Ni)As 2.634(1) 2.834(0.95) 3.486(0.8) Willemite Zn2SiO4 2.635(1) 3.965(1) 3.794(0.9) Lithiophosphate Li3PO4 2.637(1) 2.801(1) 3.171(1) Austinite CaZn(AsO4)(OH) 2.639(1) 1.628(0.7) 2.791(0.7) Parsettensite (K,Na,Ca)(Mn,Al)7Si8O20(OH)8·2(H2O) (?) 2.639(1) 3.041(0.8) 5.28(0.7) Burbankite (Na,Ca)3(Sr,Ba,Ce)3(CO3)5 2.64(1) 2.71(0.95) 5.42(0.7) Mitscherlichite K2CuCl4·2(H2O) 2.64(1) 2.939(1) 11.4(1) Raite Na3Mn3Ti0.25Si8O20(OH)2·10(H2O) 2.64(1) 3.31(1) 5.28(1) Iraqite-(La) K(La,Ce,Th)2(Ca,Na)4(Si,Al)16O40 2.64(1) 3.51(1) 2.57(0.5) Kupletskite (K,Na)3(Mn,Fe++)7(Ti,Nb)2Si8O24(O,OH)7 2.641(1) 2.795(0.9) 1.634(0.47) Haggertyite Ba[Fe++6Ti5Mg]O19 2.643(1) 2.372(0.8) 1.42(0.7) Urvantsevite Pd(Bi,Pb)2 2.644(1) 3.61(0.9) 3.76(0.9) Tocornalite (Ag,Hg)I (?) 2.644(1) 4.31(1) 3.38(0.8) Montroseite (V+++,Fe+++,V++++)O(OH) 2.647(1) 1.847(0.8) 2.6(0.8) Oosterboschite (Pd,Cu)7Se3 2.647(1) 3.071(0.8) 4.892(0.55) Trona Na3(CO3)(HCO3)·2(H2O) 2.648(1) 2.969(0.7) 2.419(0.6) Peterbaylissite Hg+3(CO3)(OH)·2(H2O) 2.649(1) 2.787(1) 3.07(0.9) Hatrurite Ca3SiO5 2.649(1) 3.054(0.45) 3.049(0.4) Nacaphite Na2Ca(PO4)F 2.65(1) 1.58(0.9) 2.96(0.8) Grossular Ca3Al2(SiO4)3 2.65(1) 1.72(0.4) 2.11(0.4) Bafertisite Ba(Fe++,Mn)2TiSi2O7(O,OH)2 2.65(1) 1.913(0.55) 4.97(0.3) Tadzhikite-(Ce) Ca3(Ce,Y)2(Ti,Al,Fe+++)B4Si4O22 2.65(1) 1.913(0.55) 4.97(0.3) Tadzhikite-(Y) Ca3(Y,Ce)2(Ti,Al,Fe3+)B4Si4O22 2.65(1) 2.16(0.9) 2.25(0.5) Polarite Pd2PbBi 2.65(1) 2.16(0.9) 2.5(0.6) Borishanskiite Pd1+x(As,Pb)2, x = 0-0.2 2.65(0.5) 2.74(0.4) 4.64(0.3) Bayankhanite * Cu6HgS4 2.65(1) 2.78(0.5) 7.19(0.5) Brownmillerite Ca2(Al,Fe+++)2O5 2.65(1) 3.02(0.6) 3.95(0.6) Grechishchevite Hg3S2(Br,Cl,I)2 2.65(1) 3.06(0.6) 3.07(0.6) Arzakite Hg3S2(Br,Cl)2 2.65(1) 3.69(0.9) 2.9(0.8) Clerite ! MnSb2S4 2.651(1) 2.176(0.4) 2.181(0.4) Ferrokinoshitalite ! (Ba,K)(Fe++,Mg)3(Si2Al2)O10 (OH,F)2 2.651(1) 4.38(0.6) 4.965(0.6) Manganostibite (Mn++,Fe++)7(SbO4)(AsO4,SiO4)O4 2.655(1) 2.862(0.56) 3.479(0.4) Okayamalite ! Ca2B2SiO7 2.655(1) 2.999(1) 3.303(0.9) Strakhovite NaBa3(Mn++,Mn+++)4Si6O19(OH)3 2.655(1) 8.06(0.8) 3.3(0.6) Wattersite Hg+4Hg++Cr++++++O6 2.656(1) 3.11(1) 5.3(1) Berborite Be2(BO3)(OH,F)·(H2O) 2.657(1) 2.446(0.8) 7.5633(0.8) Zinalsite Zn2AlSi2O5(OH)4·2(H2O) (?) 2.657(1) 2.607(0.8) 3.304(0.7) Combeite Na2Ca2Si3O9 2.658(1) 2.778(1) 2.887(0.84) Barentsite Na7AlH2(CO3)4F4 2.66(1) 1.78(0.4) 2.41(0.4) Ullmannite NiSbS 2.66(1) 1.961(0.9) 1.811(0.8) Nickeline * NiAs 2.66(1) 2.61(0.75) 3.29(0.4) Gregoryite * (Na2,K2,Ca)CO3 2.66(1) 2.8(0.7) 1.94(0.4) Nagelschmidtite Ca7(SiO4)3(PO4)2 2.66(1) 3.08(0.62) 2.19(0.55) Khanneshite (NaCa)3(Ba,Sr,Ce,Ca)3(CO3)5 2.66(1) 3.14(1) 4.12(1) Garronite Na2Ca5Al12Si20O64·27(H2O) 2.66(1) 3.32(1) 2.57(0.8) Bradleyite Na3Mg(PO4)(CO3) 2.662(1) 1.845(0.7) 1.652(0.6) Manganarsite Mn++3As+++204(OH)4 2.662(1) 2.035(0.8) 2.29(0.8) Fischesserite Ag3AuSe2 2.662(1) 2.677(1) 2.418(0.95) Arsenopyrite FeAsS 2.662(1) 2.836(0.9) 1.572(0.5) Tomichite (V,Fe)4Ti3AsO13(OH) 2.662(1) 4.386(1) 4.733(1) Flinkite Mn++2Mn+++(AsO4)(OH)4 2.663(1) 1.687(0.8) 3.18(0.8) Zenzenite Pb3(Fe+++,Mn+++)4Mn++++3O15 2.663(1) 2.73(1) 2.259(0.8) Bredigite Ca7Mg(SiO4)4 2.664(1) 2.129(0.85) 2.122(0.16) Nanpingite Cs(Al,Mg,Fe++,Li)2(Si3Al)O10(OH,F)2 2.664(1) 2.585(0.7) 5.35(0.7) Hulsite (Fe++,Mg)2(Fe+++,Sn)O2(BO3) 2.664(1) 3.637(0.6) 3.762(0.6) Capgaronnite HgAg(Cl,Br,I)S 2.666(1) 1.54(0.5) 2.901(0.4) IMA1997-013 Ca8Mg(SiO4)4Cl2 2.666(1) 2.586(0.4) 3.637(0.4) Monticellite CaMgSiO4 2.666(1) 3.057(0.95) 6.32(0.95) Oxammite (NH4)2(C2O4)·(H2O) 2.669(1) 2.878(0.8) 5.68(0.7) Comancheite Hg13(Cl,Br)8O9 2.669(1) 3.214(0.53) 5.333(0.37) Ellisite Tl3AsS3 2.669(1) 3.91(0.6) 1.788(0.5) Jarosewichite Mn++3Mn+++(AsO4)(OH)6 2.67(1) 2.42(0.9) 8.18(0.7) Natrophosphate Na7(PO4)2F·19(H2O) 2.67(1) 2.64(0.9) 6.71(0.6) Natrofairchildite Na2Ca(CO3)2 2.67(1) 2.7(1) 3.12(1) Harmotome (Ba,Na,K)1-2(Si,Al)8O16·6(H2O) 2.67(1) 3.25(0.6) 3.12(0.5) Ilimaussite-(Ce) Ba2Na4CeFe+++Nb2Si8O28·5(H2O) 2.671(1) 1.89(0.63) 3.087(0.29) Carobbiite KF 2.673(1) 2.96(1) 4.81(0.9) Clinotyrolite Ca2Cu9[(As,S)O4]4(OH)10·10(H2O) 2.674(1) 2.693(1) 6.15(0.6) Ferrowyllieite (Na,Ca,Mn)(Fe++,Mn)(Fe++,Fe+++,Mg)Al(PO4)3 2.674(1) 2.693(1) 6.15(0.6) Rosemaryite (Na,Ca,Mn++)(Mn++,Fe++)(Fe+++,Fe++,Mg)Al(PO4)3 2.674(1) 2.693(1) 6.15(0.6) Wyllieite (Na,Ca,Mn++)(Mn++,Fe++)(Fe++,Fe+++,Mg)Al(PO4)3 2.674(1) 3.773(0.9) 8.036(0.85) Abenakiite-(Ce) Na26REE6(SiO3)6(PO4)6(CO3)6(S++++O2)O 2.674(1) 4.187(0.76) 2.459(0.4) Tychite Na6Mg2(CO3)4(SO4) 2.675(1) 2.883(0.9) 3.96(0.7) Imhofite Tl6CuAs16S40 2.675(1) 7.13(0.8) 3.564(0.6) Ferropyrosmalite (Fe++,Mn)8Si6O15(OH,Cl)10 2.676(1) 3.23(0.6) 9.8(0.6) Johninnesite Na2Mg4Mn++12(AsO4)2(Si12O35)(OH)6 2.676(1) 3.69(1) 7.381(1) Srebrodolskite Ca2Fe+++2O5 2.68(1) 2.08(0.4) 5.9(0.32) Molysite Fe+++Cl3 2.68(1) 2.9(1) 2.69(0.7) Epidote Ca2(Fe+++,Al)3(SiO4)3(OH) = Ca2(Fe,Al)Al2(SiO4)(Si2O7)O(OH) 2.68(1) 3.31(0.85) 4.26(0.85) Itoigawaite ! SrAl2Si2O7(OH)2·(H2O) 2.68(1) 4.18(0.9) 2.47(0.8) Ferrotychite Na6Fe++2(SO4)(CO3)4 2.68(1) 4.76(0.81) 2.656(0.5) Reppiaite Mn++[(V,As)O4(OH)2]2 2.68(1) 4.89(0.95) 2.45(0.5) Mayenite Ca12Al14O33 2.681(1) 2.846(0.8) 1.5825(0.5) Graeserite ! (Fe+++,Ti)4Ti3AsO13(OH) 2.684(1) 2.999(0.7) 1.603(0.6) Uvarovite Ca3Cr2(SiO4)3 2.685(1) 3.472(0.9) 2.512(0.9) Qingheiite Na2(Mn++,Mg,Fe++)(Al,Fe+++)(PO4)3 2.686(1) 2.593(0.75) 3.42(0.6) Hagendorfite NaCaMn(Fe++,Fe+++,Mg)2(PO4)3 2.686(1) 3.003(0.42) 2.452(0.39) Wadalite Ca6(Al,Si,Mg,Fe)7O16Cl3 2.6865(1) 2.6712(0.65) 2.653(0.47) Merwinite Ca3Mg(SiO4)2 2.688(1) 3.005(0.65) 1.607(0.49) Goldmanite Ca3(V,Al,Fe+++)2(SiO4)3 2.69(1) 1.69(0.6) 2.51(0.5) Hematite Fe2O3 2.69(1) 2.87(0.65) 4.03(0.5) Zoisite Ca2Al3(SiO4)3(OH) = Ca2AlAl2(SiO4)(Si2O7)O(OH) 2.69(1) 3.01(0.7) 1.61(0.5) Yamatoite * (Mn++,Ca)3(V+++,Al)2(SiO4)3 2.691(1) 2.86(1) 2.96(1) IMA2000-025 ! (Sr,Ca)2Na[Al5Si5O20]·7H2O 2.692(1) 2.79(0.55) 2.24(0.45) Carbonate-fluorapatite Ca5(PO4,CO3)3F 2.693(1) 3.012(1) 2.372(0.8) Staurolite (Fe++,Mg)2Al9(Si,Al)4O20(O,OH)4 2.693(1) 3.11(0.8) 8.38(0.65) Kaersutite NaCa2(Mg4Ti)Si6Al2O23(OH)2 2.694(1) 12(1) 2.598(0.55) Eggletonite Na2Mn8[Si11AlO29](OH)7·11(H2O) 2.695(1) 2.788(0.5) 2.817(0.5) Harstigite Ca6MnBe4(SiO4)2(Si2O7)2(OH)2 2.695(1) 4.22(0.76) 2.474(0.7) Manganotychite Na6(Mn++,Fe++,Mg)2(SO4)(CO3)4 2.696(1) 1.6112(0.6) 3.015(0.6) Andradite Ca3Fe+++2(SiO4)3 2.697(1) 2.015(0.9) 2.9(0.8) Teepleite Na2B(OH)4Cl 2.698(1) 2.91(0.9) 2.622(0.6) Dissakisite-(Ce) Ca(Ce,REE)(Mg,Fe++)(Al,Fe+++)2Si3O12(OH) 2.699(1) 2.528(0.9) 8.4(0.9) Winchite [ ](CaNa)Mg4(AL,Fe+++)Si8O22(OH)2 2.7(1) 1.91(0.5) 2.72(0.4) Perovskite CaTiO3 2.7(1) 2.015(0.8) 1.806(0.6) Sederholmite NiSe 2.7(1) 2.23(0.8) 3.81(0.6) Empressite AgTe 2.7(1) 2.53(0.9) 8.4(0.9) Alumino-winchite NaCa(Mg,Fe++)4AlSi8O22(OH)2 2.7(1) 2.83(1) 3.06(1) Saneroite Na2(Mn++,Fe+++)10Si11V+++++O34(OH)4 2.7(1) 3.03(0.95) 2.67(0.79) Cassidyite Ca2(Ni,Mg)(PO4)2·2(H2O) 2.7(1) 5.3(1) 4.08(0.55) Kermesite Sb2S2O 2.7(1) 5.75(1) 2.445(0.9) Claringbullite Cu++4(OH)7Cl 2.701(1) 2.646(0.65) 2.667(0.6) Spurrite Ca5(SiO4)2(CO3) 2.702(1) 1.6507(0.3) 2.35(0.15) Abswurmbachite Cu++Mn+++6SiO12 2.702(1) 1.887(0.8) 3.15(0.8) Trechmannite AgAsS2 2.703(1) 2.8756(0.9) 2.7894(0.8) Heneuite CaMg5(PO4)3(CO3)(OH) 2.703(1) 6.24(0.7) 3.085(0.55) Ferroalluaudite NaCaFe++(Fe++,Mn,Fe+++,Mg)2(PO4)3 2.704(1) 4.393(0.9) 5.06(0.9) Orientite Ca2Mn++Mn+++2Si3O10(OH)4 2.706(1) 2.446(0.8) 8.11(0.7) Lesukite ! Al2(OH)5Cl·2(H2O) 2.709(1) 1.758(0.8) 2.419(0.8) Viaeneite ! (Fe,Pb)4S8O 2.709(1) 2.839(0.85) 7.28(0.7) Ilvaite CaFe++2Fe+++Si2O7O(OH) 2.709(1) 4.11(1) 1.817(0.8) Gmelinite-K ! (K,Na,Ca)(Al7Si17O48)·22H2O 2.709(1) 5.05(0.8) 1.689(0.7) Natisite Na2(TiO)SiO4 2.71(1) 1.76(0.63) 3.44(0.4) Marcasite FeS2 2.71(1) 2.536(0.92) 3.404(0.57) Fluoro-ferroleakeite NaNa2(Fe++2Fe+++2Li)Si8O22F2 2.71(1) 2.76(1) 3.9(0.6) Hematophanite Pb4Fe+++3O8(OH,Cl) 2.71(1) 2.96(0.95) 3.09(0.95) IMA2000-027 ! Sr4TiTi4Si4O22 2.71(1) 3.01(0.9) 4.13(0.8) Galileiite ! NaFe++4(PO4)3 2.71(1) 3.14(1) 3.17(1) Chevkinite-(Ce) (Ce,La,Ca,Th)4(Fe++,Mg)2(Ti,Fe+++)3Si4O22 2.71(1) 3.19(0.7) 4.25(0.7) Gismondine Ca2Al4Si4O16·9(H2O) 2.712(1) 2.349(0.88) 1.661(0.43) Monteponite CdO 2.712(1) 2.59(0.9) 6.94(0.4) Uytenbogaardtite Ag3AuS2 2.712(1) 3.023(0.9) 2.477(0.8) Krutaite CuSe2 2.712(1) 3.035(0.8) 2.475(0.6) Schorlomite Ca3(Ti,Fe+++,Al)2[(Si,Fe+++,Fe++)O4]3 2.7132(1) 1.699(0.85) 2.4774(0.8) Karelianite V2O3 2.714(1) 2.882(0.94) 4.55(0.63) Pyrocoproite * (Mg(K,Na))2P2O7 2.714(1) 3.12(0.9) 2.502(0.8) Glaucophane [ ]Na2(Mg3Al2)Si8O22(OH)2 2.714(1) 3.61(0.9) 5.43(0.8) Clinobehoite Be(OH)2 2.714(1) 6.77(0.8) 2.674(0.75) Balangeroite (Mg,Fe+++,Fe++,Mn++)42Si16O54(OH)40 2.715(1) 1.859(0.5) 1.983(0.5) Sudovikovite ! PtSe2 2.715(1) 2.298(0.36) 1.683(0.24) Indium In 2.715(1) 3.18(0.5) 2.16(0.45) IMA1998-029 ! (Ce,REE,Ca)4(Mg,Fe++)(Cr,Fe+++)2(Ti,Nb)2Si4O22 2.715(1) 3.51(0.8) 1.84(0.5) Retzian-(La) (Mn,Mg)2(La,Ce,Nd)(AsO4)(OH)4 2.717(1) 2.757(1) 4.04(0.8) Soucekite PbCuBi(S,Se)3 2.717(1) 2.811(0.8) 2.261(0.35) Carbonate-hydroxylapatite Ca5(PO4,CO3)3(OH) 2.717(1) 3.553(0.8) 1.848(0.5) Retzian-(Ce) Mn2Ce(AsO4)(OH)4 2.718(1) 2.497(0.9) 3.53(0.9) Bideauxite Pb2AgCl3(F,OH)2 2.72(1) 1.656(0.7) 2.14(0.5) Braunite-I Mn++Mn+++6SiO12 2.72(1) 1.656(0.7) 2.14(0.5) Braunite-II * Mn++Mn+++6SiO12 2.72(1) 1.657(0.9) 1.421(0.8) Bixbyite (Mn+++,Fe+++)2O3 2.72(1) 1.827(0.9) 2.45(0.8) Glaucodot (Co,Fe)AsS 2.72(1) 2.6(0.8) 3.72(0.7) Natrophilite NaMnPO4 2.72(1) 2.78(1) 3.06(0.8) Tundrite-(Ce) Na3(Ce,La)4(Ti,Nb)2(SiO4)2(CO3)3O4(OH)·2(H2O) 2.72(1) 3.039(0.72) 1.626(0.56) Morimotoite Ca3TiFe++Si3O12 2.72(1) 3.18(0.8) 4.48(0.7) Rankinite Ca3Si2O7 2.72(1) 3.79(0.9) 1.91(0.8) Buchwaldite NaCaPO4 2.72(1) 3.85(0.8) 1.749(0.7) Seligmannite PbCuAsS3 2.72(1) 8.28(0.9) 9(0.9) Tirodite Mn++2(Mg,Fe++)5Si8O22(OH)2 2.72(1) 8.42(1) 3.09(0.8) Riebeckite [ ]Na2(Fe++3Fe+++2)Si8O22(OH)2 2.72(1) 8.9(1) 3.29(0.9) Kolfanite Ca2Fe+++3O2(AsO4)3·2(H2O) 2.722(1) 2.218(0.7) 2.527(0.55) Geikielite MgTiO3 2.722(1) 4.22(0.9) 3.141(0.8) Amicite K2Na2Al4Si4O16·5(H2O) 2.723(1) 2.992(0.9) 3.11(0.8) Prosperite CaZn2(AsO4)2·(H2O) 2.724(1) 2.639(0.57) 2.55(0.5) Clinophosinaite Na3CaPSiO7 2.725(1) 2.916(0.9) 2.999(0.8) Marsturite NaCaMn3[Si5O14(OH)] 2.725(1) 3.05(0.8) 2.061(0.75) Congolite (Fe++,Mg,Mn)3B7O13Cl 2.726(1) 3.534(0.6) 4.89(0.3) Retzian-(Nd) Mn2(Nd,Ce,La)(AsO4)(OH)4 2.726(1) 5.472(0.32) 3.455(0.17) Hejtmanite Ba(Mn,Fe++)2TiO(Si2O7)(OH,F)2 2.727(1) 3.448(0.87) 3.896(0.66) Cesanite Na3Ca2(SO4)3(OH) 2.728(1) 1.672(0.85) 1.427(0.6) Neltnerite CaMn+++6SiO12 2.729(1) 2.007(0.45) 1.51(0.35) Kitkaite NiTeSe 2.729(1) 2.916(1) 3.42(0.55) Parwelite (Mn,Mg)5Sb(As,Si)2O12 2.73(1) 2.223(0.7) 3.991(0.7) IMA1999-023 ! Cu2HgSe2 2.73(1) 2.53(0.9) 1.71(0.7) Ecandrewsite (Zn,Fe++,Mn++)TiO3 2.73(1) 2.84(1) 3.28(1) Semenovite (Na,Ca)9(Ce,La)2(Fe++,Mn)(Si,Be)20(O,OH,F)48 2.73(1) 2.88(0.9) 2.59(0.7) Cebollite Ca5Al2(SiO4)3(OH)4 2.73(1) 3.3(1) 3.58(1) Vaterite CaCO3 2.73(1) 6.3(0.8) 3.07(0.65) Alluaudite NaCaFe++(Mn,Fe++,Fe+++,Mg)2(PO4)3 2.732(1) 2.914(1) 5.523(0.8) Melanotekite Pb2Fe+++2Si2O9 2.736(1) 5.34(0.65) 3.69(0.5) Artinite Mg2(CO3)(OH)2·3(H2O) 2.737(1) 2.874(0.7) 4.075(0.5) Schreyerite V+++2Ti3O9 2.74(1) 1.582(0.25) 3.87(0.25) Sal-ammoniac NH4Cl 2.74(1) 1.768(0.5) 2.685(0.45) Bournonite PbCuSbS3 2.74(1) 2.194(0.55) 2.437(0.55) Kraisslite (Mn++,Mg)24Zn3Fe+++(As+++O3)2(As+++++O4)3(SiO4)6(OH)18 2.74(1) 2.48(0.9) 3.27(0.8) Proustite Ag3AsS3 2.74(1) 2.56(0.4) 3.4(0.4) Varulite NaCaMn(Mn,Fe++,Fe+++)2(PO4)3 2.74(1) 2.77(1) 1.87(0.9) Ruarsite RuAsS 2.74(1) 2.86(0.8) 1.68(0.7) Mosesite Hg2N(Cl,SO4,MoO4,CO3)·(H2O) 2.74(1) 2.86(1) 2.9(1) Kentrolite Pb2Mn+++2Si2O9 2.74(1) 3.78(0.7) 3.05(0.6) Hutchinsonite (Pb,Tl)2As5S9 2.74(1) 7.44(0.55) 2.566(0.53) Phosinaite-(Ce) * Na13Ca2Ce[Si4O12](PO4) 2.741(1) 1.692(0.45) 3.543(0.36) Gaspeite (Ni,Mg,Fe++)CO3 2.742(1) 2.102(0.45) 1.7(0.35) Magnesite MgCO3 2.743(1) 2.872(1) 5.511(0.8) Gianellaite Hg4(SO4)N2 2.743(1) 3.212(0.7) 3.722(0.4) Yecoraite Bi5Fe+++3(Te++++O3)(Te++++++O4)2O9·9(H2O) 2.743(1) 3.551(0.4) 1.702(0.3) Sphaerocobaltite CoCO3 2.744(1) 3.195(0.6) 4.06(0.5) Nickenichite Na0,8Ca0,4(Mg,Fe+++,Al)3Cu0,4(AsO4)3 2.744(1) 3.887(0.79) 1.942(0.57) Latrappite (Ca,Na)(Nb,Ti,Fe)O3 2.746(1) 1.587(0.5) 1.942(0.4) Loparite-(Ce) (Ce,Na,Ca)2(Ti,Nb)2O6 2.746(1) 2.768(1) 2.461(0.8) Imiterite Ag2HgS2 2.746(1) 3.43(0.32) 13.8(0.25) Arctite Na2Ca4(PO4)3F 2.748(1) 1.443(0.35) 1.475(0.33) Paranatisite Na2(TiO)SiO4 2.749(1) 2.814(0.94) 2.391(0.85) Fetiasite (Fe++,Fe+++,Ti++++)3O2(As+++2O5) 2.749(1) 3.345(0.9) 5.57(0.35) Lorenzenite Na2Ti2Si2O9 2.749(1) 3.58(1) 4.8(0.9) Edingtonite BaAl2Si3O10·4(H2O) 2.75(1) 1.65(0.7) 1.71(0.7) Berzeliite (Ca,Na)3(Mg,Mn)2(AsO4)3 2.75(1) 1.727(0.9) 1.871(0.9) IMA2000-016 ! (Ti,Fe,Mg,Mn)1-xTi2O5 2.75(1) 2(0.3) 2.98(0.3) Griphite Ca(Mn,Na,Li)6Fe++Al2(PO4)6(F,OH)2 2.75(1) 2.46(0.6) 1.66(0.55) Cattierite CoS2 2.75(1) 2.47(0.9) 1.82(0.7) Alloclasite (Co,Fe)AsS 2.75(1) 2.516(0.8) 4.37(0.6) Henritermierite Ca3(Mn,Al)2(SiO4)2(OH)4 2.75(1) 2.84(0.95) 2.28(0.4) Chlorellestadite Ca5(SiO4,PO4,SO4)3(Cl,OH,F) 2.75(1) 2.87(0.8) 3.12(0.7) Babingtonite Ca2(Fe++,Mn)Fe+++Si5O14(OH) 2.75(1) 2.97(0.5) 3.6(0.5) Leucophanite (Na,Ca)2BeSi2(O,OH,F)7 2.75(1) 3.25(0.8) 4.06(0.5) Johillerite Na(Mg,Zn)3Cu(AsO4)3 2.75(1) 3.32(1) 3.03(0.9) Denisovite (K,Na)Ca2Si3O8(F,OH) 2.75(1) 3.34(0.8) 2.85(0.7) Sarcolite NaCa6Al4Si6O24F (?) 2.75(1) 3.45(1) 3(0.7) Marrite PbAgAsS3 2.75(1) 3.55(0.5) 1.703(0.45) Smithsonite ZnCO3 2.75(1) 3.6(0.8) 3.39(0.7) Rathite (Pb,Tl)3As5S10 2.752(1) 2.593(0.8) 1.621(0.6) Vesuvianite Ca10Mg2Al4(SiO4)5(Si2O7)2(OH)4 2.752(1) 2.947(0.9) 3.52(0.9) Sartorite PbAs2S4 2.753(1) 2.91(0.8) 3.015(0.8) Wicksite NaCa2(Fe++,Mn++)4MgFe+++(PO4)6·2(H2O) 2.753(1) 2.96(1) 3.694(1) Chladniite Na2Ca(Mg,Fe++)7(PO4)6 2.754(1) 2.544(0.7) 1.7261(0.55) Ilmenite Fe++TiO3 2.755(1) 2.263(0.7) 5.48(0.65) Paratacamite (Cu,Zn)2(OH)3Cl 2.756(1) 3.32(0.9) 3.43(0.7) Molybdomenite PbSeO3 2.759(1) 2.97(0.39) 3.601(0.37) Meliphanite (Ca,Na)2Be[(Si,Al)2O6(F,OH)] 2.76(1) 1.84(0.8) 2.7(0.6) Nisbite NiSb2 2.76(1) 2.28(0.8) 2.38(0.8) Tucekite Ni9Sb2S8 2.76(1) 2.77(1) 1.952(0.5) Tausonite SrTiO3 2.76(1) 2.95(0.7) 1.63(0.65) Khibinskite K2ZrSi2O7 2.76(1) 3.23(0.7) 2.5(0.6) Clinohedrite CaZnSiO4·(H2O) 2.76(1) 3.52(0.8) 3.79(0.7) Schairerite Na21(SO4)7F6Cl 2.76(1) 3.9(0.85) 1.95(0.7) Lueshite NaNbO3 2.763(1) 1.689(0.8) 2.384(0.7) Mcalpineite Cu++3Te++++++O6·(H2O) 2.763(1) 2.004(0.58) 2.257(0.58) Katoite Ca3Al2(SiO4)3-x(OH)4x x=1.5-3 2.763(1) 2.842(1) 1.982(0.63) Olgite Na(Sr,Ba)PO4 2.764(1) 1.847(0.9) 16.1(0.7) Minehillite (K,Na)2-3Ca28(Zn4Al4Si40)O112(OH)16 2.764(1) 3.053(0.95) 3.556(0.7) Stibnite Sb2S3 2.764(1) 3.55(0.7) 3.7(0.7) Johnsomervilleite Na2Ca(Mg,Fe++,Mn)7(PO4)6 2.764(1) 3.56(0.4) 2.229(0.35) Trimerite CaMn2Be3(SiO4)3 2.764(1) 6.52(1) 3.29(0.8) Kainosite-(Y) Ca2(Y,Ce)2Si4O12(CO3)·(H2O) 2.765(1) 1.485(0.7) 1.709(0.7) Gugiaite Ca2BeSi2O7 2.765(1) 1.953(0.53) 3.915(0.35) Isolueshite ! (Na,La,Ca)(Nb,Ti)O3 2.766(1) 2.902(1) 3.164(0.6) Damaraite Pb4O3Cl2 2.767(1) 2.831(1) 4.62(0.9) IMA1999-003 ! Hg+3(CO3)(OH)·2H2O 2.768(1) 2.372(0.6) 2.753(0.55) Thermonatrite Na2CO3·(H2O) 2.768(1) 2.523(0.4) 3.236(0.39) Stringhamite CaCuSiO4·2(H2O) 2.768(1) 3.479(0.82) 5.54(0.79) Krasnovite ! Ba(Al,Mg)(PO4,CO3)(OH)2·(H2O) 2.7681(1) 2.8728(1) 4.251(1) Vuonnemite Na11Nb2TiSi4O12(PO4)2O5F2 2.7682(1) 2.927(0.78) 3.006(0.67) Bederite ! ([ ],Na)Ca2(Mn++,Mg,Fe++)2(Fe+++,Mg++,Al)2Mn++2(PO4)6·2(H2O) 2.77(1) 1.556(0.8) 2.97(0.7) Froodite PdBi2 2.77(1) 1.96(0.8) 1.598(0.7) Quadratite ! Ag(Cd,Pb)AsS3 2.77(1) 2.12(0.8) 2.03(0.7) Petzite Ag3AuTe2 2.77(1) 2.63(0.5) 2.39(0.4) Petrovskaite AuAg(S,Se) 2.77(1) 3.07(1) 3.21(0.8) Talmessite Ca2Mg(AsO4)2·2(H2O) 2.771(1) 1.879(0.26) 3.52(0.26) Arsenic As 2.771(1) 2.381(0.9) 2.284(0.8) Arsenohauchecornite Ni18Bi3AsS16 2.772(1) 2.29(0.8) 2.508(0.8) Nefedovite Na5Ca4(PO4)4F 2.772(1) 2.924(0.65) 2.98(0.65) Rhodonite (Mn++,Fe++,Mg,Ca)SiO3 2.773(1) 3.43(0.55) 2.13(0.45) Lamprophyllite Na2(Sr,Ba)2Ti3(SiO4)4(OH,F)2 2.774(1) 1.962(0.5) 3.2(0.5) Chlorargyrite AgCl 2.774(1) 2.952(0.55) 2.924(0.38) Armangite Mn26As+++18O50(OH)4(CO3) 2.774(1) 2.993(0.9) 2.541(0.7) Jeffreyite (Ca,Na)2(Be,Al)Si2(O,OH)7 2.774(1) 3.73(1) 3.23(0.9) Merrihueite (K,Na)2(Fe++,Mg)5Si12O30 2.776(1) 2.617(0.61) 2.491(0.61) Wiluite ! Ca19(Al,Mg,Fe,Ti)13(B,Al,[ ])5Si18O68(O,OH)10 2.776(1) 3.01(1) 6.16(1) Ungursaite * NaCa5(Ta,Nb)24O65(OH) 2.777(1) 1.863(0.95) 2.513(0.65) Millerite NiS 2.778(1) 2.159(0.9) 1.815(0.7) Achavalite * FeSe 2.779(1) 2.566(0.9) 3.22(0.9) Pyrargyrite Ag3SbS3 2.779(1) 2.861(0.6) 1.836(0.2) Chlorapatite Ca5(PO4)3Cl 2.779(1) 3.108(0.44) 1.662(0.4) Schaferite ! NaCa2Mg2(VO4)3 2.78(1) 1.714(0.8) 3.2(0.8) Roselite-beta Ca2(Co,Mg)(AsO4)2·2(H2O) 2.78(1) 1.922(0.9) 2.67(0.8) Kurchatovite Ca(Mg,Mn,Fe++)B2O5 2.78(1) 1.94(0.5) 3.46(0.5) Cappelenite-(Y) Ba(Y,Ce)6Si3B6O24F2 2.78(1) 2.14(0.5) 5.9(0.5) Berndtite SnS2 2.78(1) 2.216(0.9) 1.721(0.7) IMA2000-009 NaBSiO4 2.78(1) 2.57(0.9) 1.745(0.8) Pyrophanite MnTiO3 2.78(1) 2.58(0.8) 3.78(0.8) Burkeite Na6(CO3)(SO4)2 2.78(1) 2.59(0.5) 2.33(0.4) Jimboite Mn3B2O6 2.78(1) 2.96(0.8) 5.59(0.65) Hinsdalite (Pb,Sr)Al3(PO4)(SO4)(OH)6 2.78(1) 3.13(0.5) 4.02(0.5) Tritomite-(Y) (Y,Ca,La,Fe++)5(Si,B,Al)3(O,OH,F)13 (?) 2.78(1) 3.7(0.9) 6.12(0.9) Tarbuttite Zn2(PO4)(OH) 2.78(1) 4.37(0.8) 4.69(0.8) Phosphosiderite Fe+++PO4·2(H2O) 2.78(1) 8.35(0.9) 1.73(0.8) Nanlingite CaMg4(AsO3)2F4 2.781(1) 3.08(0.8) 2.75(0.7) Gaitite Ca2Zn(AsO4)2·2(H2O) 2.783(1) 3(0.68) 2.95(0.63) Byelorussite-(Ce) NaBa2(Ce,La)2Mn++Ti2Si8O26(F,OH)·(H2O) 2.783(1) 4.66(0.73) 3.178(0.51) Thenardite Na2SO4 2.786(1) 3.6(0.9) 1.559(0.5) Bicchulite Ca2Al2SiO6(OH)2 2.788(1) 3.943(0.7) 2.276(0.65) Shandite Pb2Ni3S2 2.789(1) 1.685(0.8) 3.21(0.8) Fukuchilite Cu3FeS8 2.79(1) 1.734(0.8) 3.59(0.6) Siderite Fe++CO3 2.79(1) 2.3(0.6) 2.39(0.6) Hauchecornite Ni9Bi(Sb,Bi)S8 2.79(1) 2.56(0.8) 3.61(0.8) Phosgenite Pb2(CO3)Cl2 2.79(1) 3.52(0.8) 3.68(0.7) Galeite Na15(SO4)5F4Cl 2.79(1) 4(0.8) 4.15(0.8) Vladimirite Ca5(AsO3OH)2(AsO4)2·5(H2O) 2.793(1) 1.399(0.7) 2.831(0.25) Herzenbergite SnS 2.793(1) 3.49(0.9) 3.71(0.9) Kuliokite-(Y) (Y,REE)4Al(SiO4)2(OH)2F5 2.794(1) 3.006(0.8) 3.028(0.8) Brenkite Ca2(CO3)F2 2.795(1) 2.744(0.95) 2.78(0.9) Larnite Ca2SiO4 2.795(1) 2.876(0.9) 3.29(0.9) Keyite Cu++3(Zn,Cu)4Cd2(AsO4)6·2(H2O) 2.796(1) 3.139(0.65) 3.44(0.65) Magnesio-axinite Ca2MgAl2BO3Si4O12(OH) 2.797(1) 3.44(0.8) 6.57(0.8) Natrochalcite NaCu2(SO4)2(OH)·(H2O) 2.799(1) 3.045(1) 3.093(0.8) Clinokurchatovite Ca(Mg,Fe++,Mn)B2O5 2.8(1) 1.945(0.3) 3.71(0.3) Nadorite PbSbO2Cl 2.8(1) 2.314(0.6) 2.405(0.5) Tellurohauchecornite Ni9BiTeS8 2.8(1) 2.56(0.9) 1.67(0.8) Manganberzeliite (Ca,Na)3(Mn,Mg)2(AsO4)3 2.8(1) 2.702(0.6) 2.772(0.55) Fluorapatite Ca5(PO4)3F 2.8(1) 2.95(1) 3(0.9) IMA2000-D ! Ba2Na(La,Ce)2Fe2+Ti2Si8O26(OH,O,F)·H2O 2.8(1) 3(0.9) 3.1(0.9) Yuksporite (K,Ba)(Na,Sr)Ca2(Si,Ti)4O11(F,OH)·n(H2O) 2.8(1) 3.55(1) 9.1(0.6) Synchysite-(Ce) CaCe(CO3)2F 2.8(1) 3.8(1) 5.85(0.35) Bazirite BaZrSi3O9 2.8(1) 5.58(0.7) 2.95(0.18) Joaquinite-(Ce) NaFe++Ba2Ce2(Ti,Nb)2[Si4O12]2O2(OH,F)·(H2O) 2.801(1) 2.787(0.8) 7.31(0.8) Ponomarevite K4Cu++4OCl10 2.801(1) 2.811(1) 6.58(0.9) Vitusite-(Ce) Na3(Ce,La,Nd)(PO4)2 2.801(1) 2.967(0.72) 3.001(0.48) Strontio-orthojoaquinite (Na,Fe++)2Ba2Sr2Ti2[Si4O12]2(O,OH)2·(H2O) 2.801(1) 2.967(0.72) 3.001(0.48) Strontiojoaquinite (Na,Fe++)2Ba2Sr2Ti2[Si4O12]2(O,OH)2·(H2O) 2.803(1) 2.558(0.6) 3.132(0.55) Palenzonaite (Ca,Na)3Mn++(V+++++,As+++++,Si)3O12 2.803(1) 2.72(0.7) 3.84(0.55) Nahpoite Na2HPO4 2.805(1) 2.703(0.8) 2.066(0.6) Mattagamite CoTe2 2.806(1) 1.766(0.8) 2.613(0.8) Melanostibite Mn(Sb+++++,Fe+++)O3 2.807(1) 3.384(0.95) 3.117(0.9) Dansite Na21Mg(SO4)10Cl3 2.809(1) 3.027(1) 3.108(1) Calciocopiapite CaFe+++4(SO4)6(OH)2·19(H2O) 2.809(1) 9.39(0.9) 2.92(0.7) Lunokite (Mn,Ca)(Mg,Fe++,Mn)Al(PO4)2(OH)·4(H2O) 2.81(1) 1.84(0.4) 3.44(0.4) Melanocerite-(Ce) (Ce,Th,Ca)5(Si,B)3O12(OH,F)·n(H2O) (?) 2.81(1) 1.84(0.4) 3.44(0.4) Tritomite-(Ce) (Ce,La,Ca,Y,Th)5(Si,B)3(O,OH,F)13 2.81(1) 2.42(0.4) 5.27(0.4) Childrenite Fe++Al(PO4)(OH)2·(H2O) 2.81(1) 2.42(0.4) 5.27(0.4) Eosphorite MnAl(PO4)(OH)2·(H2O) 2.81(1) 2.59(0.9) 2.03(0.8) Seinajokite (Fe,Ni)(Sb,As)2 2.81(1) 2.71(0.7) 2.07(0.5) Frohbergite FeTe2 2.81(1) 2.75(0.9) 2.73(0.8) Britholite-(Y) (Y,Ca)5(SiO4,PO4)3(OH,F) 2.81(1) 3.05(0.8) 7.61(0.5) Olshanskyite Ca3(OH)2[B(OH)4]4 2.811(1) 2.92(0.8) 4.15(0.8) Zabuyelite Li2CO3 2.811(1) 3.09(0.8) 3.61(0.7) Parabrandtite Ca2Mn++(AsO4)·2(H2O) 2.812(1) 2.958(1) 3.006(1) Kombatite Pb14(VO4)2O9Cl4 2.812(1) 2.99(1) 3.07(1) Jeppeite (K,Ba)2(Ti,Fe+++)6O13 2.812(1) 3.132(1) 3.257(1) Kornite Na(CaNa)Fe++4(Al,Fe+++)Si7AlO22(OH)2 2.812(1) 3.16(0.9) 3.46(0.8) Ferroaxinite Ca2Fe++Al2BO3Si4O12(OH) 2.812(1) 3.46(0.8) 6.3(0.7) Tinzenite (Ca,Mn,Fe)3Al2BO3Si4O12(OH) 2.813(1) 1.896(0.75) 3.048(0.65) Covellite CuS 2.813(1) 5.63(0.9) 2.86(0.7) Criddleite TlAg2Au3Sb10S10 2.814(1) 2.72(0.6) 2.778(0.6) Hydroxylapatite Ca5(PO4)3(OH) 2.814(1) 3.017(0.7) 3.64(0.65) Fillowite Na2Ca(Mn,Fe++)7(PO4)6 2.814(1) 3.077(1) 3.63(0.9) Gillulyite Tl2(As,Sb)8S13 2.817(1) 2.505(0.8) 3.747(0.8) Stanfieldite Ca4(Mg,Fe++,Mn)5(PO4)6 2.817(1) 4.36(0.8) 2.594(0.7) Weloganite Sr3Na2Zr(CO3)6·3(H2O) 2.818(1) 3.65(0.9) 1.744(0.8) Tusionite MnSn++++(BO3)2 2.82(1) 1.549(0.6) 2.06(0.5) Melonite NiTe2 2.82(1) 1.965(0.3) 2.87(0.3) Sergeevite Ca2Mg11(CO3)9(HCO3)4(OH)4·6(H2O) 2.82(1) 2.57(0.7) 2.88(0.7) Sursassite Mn++2Al3(SiO4)(Si2O7)(OH)3 2.82(1) 2.87(0.8) 6.21(0.8) Warikahnite Zn3(AsO4)2·2(H2O) 2.82(1) 3.01(0.9) 6.03(0.55) Rhabdophane-(Ce) (Ce,La)PO4·(H2O) 2.82(1) 3.12(1) 4.01(0.8) Mcbirneyite Cu3(VO4)2 2.82(1) 3.21(0.8) 2.72(0.6) Smithite AgAsS2 2.82(1) 3.22(0.4) 1.94(0.3) Aramayoite Ag(Sb,Bi)S2 2.82(1) 3.24(0.9) 3.37(0.9) Borodaevite Ag5(Bi,Sb)9S16 2.82(1) 3.27(0.7) 1.961(0.6) Schirmerite Ag3Pb3Bi9S18 to Ag3Pb6Bi7S18 2.82(1) 3.44(0.9) 2.117(0.5) Trimounsite-(Y) (Y,REE)2Ti2SiO9 2.82(1) 5(1) 5.4(1) Atacamite Cu2Cl(OH)3 2.821(1) 1.994(0.55) 1.628(0.15) Halite NaCl 2.821(1) 2.551(0.8) 2.806(0.7) Dellaite Ca6Si3O11(OH)2 2.821(1) 2.987(0.64) 3.137(0.33) Pyrophosphite * K2CaP2O7 2.821(1) 3.62(0.75) 3.1(0.65) Cascandite Ca(Sc,Fe++)Si3O8(OH) 2.822(1) 3.363(0.5) 3.118(0.27) IMA1997-051 TlAg2(As,Sb)3S6 2.823(1) 3.587(0.86) 2.778(0.84) Jentschite ! TlPbAs2SbS6 2.824(1) 3.03(0.8) 2.724(0.6) Killalaite 2Ca3Si2O7·(H2O) 2.825(1) 2.96(1) 7.14(0.8) Alluaivite Na19(Ca,Mn++)6(Ti,Nb)3(Si3O9)2(Si10O28)2Cl·2(H2O) 2.826(1) 2.602(0.56) 2.334(0.33) Natroxalate Na2C2O4 2.827(1) 3.3(0.8) 2.03(0.6) Matildite AgBiS2 2.828(1) 9.31(0.9) 5.34(0.6) Segelerite CaMgFe+++(PO4)2(OH)·4(H2O) 2.829(1) 2.27(0.9) 2.531(0.71) Mineevite-(Y) Na25Ba(Y,Gd,Dy)2(HCO3)4(CO3)11(SO4)2ClF2 2.829(1) 2.836(0.8) 2.438(0.5) Ernstite (Mn++1-xFe+++x)Al(PO4)(OH)2-xOx 2.83(1) 1.67(0.8) 2.36(0.7) Linnaeite Co++Co+++2S4 2.83(1) 1.71(0.8) 1.09(0.6) Vaesite NiS2 2.83(1) 1.778(0.9) 1.84(0.8) Lomonosovite Na8Mn++Ti++++3Si4O12(PO4)2O4 2.83(1) 2.11(0.9) 1.78(0.8) Landauite NaMnZn2(Ti,Fe+++)6Ti12O38 2.83(1) 2.42(0.9) 2.92(0.8) Jadeite Na(Al,Fe+++)Si2O6 2.83(1) 2.68(0.6) 1.693(0.5) Arseniopleite NaCaMn++3(AsO4)3 2.83(1) 2.75(0.8) 3.15(0.7) Cafarsite Ca8(Ti,Fe++,Fe+++,Mn)6-7(As+++O3)12·4(H2O) 2.83(1) 2.853(0.63) 2.565(0.55) Ternesite ! Ca5(SiO4)2SO4 2.83(1) 2.99(1) 2.14(0.5) Tristramite (Ca,U++++,Fe+++)(PO4,SO4)·2(H2O) 2.83(1) 3.06(0.7) 2.12(0.6) Sinjarite CaCl2·2(H2O) 2.83(1) 3.11(1) 2.54(0.9) Minasgeraisite-(Y) CaY2Be2Si2O10 2.83(1) 3.13(1) 2.56(0.9) Gadolinite-(Y) Y2Fe++Be2Si2O10 2.83(1) 3.18(0.9) 6.61(0.9) Afwillite Ca3Si2O4(OH)6 2.83(1) 3.26(0.9) 1.998(0.8) Cuboargyrite ! AgSbS 2.83(1) 3.48(0.8) 2.98(0.7) Freieslebenite AgPbSbS3 2.83(1) 11.3(1) 5.55(0.9) Tobermorite Ca5Si6O16(OH)2·4(H2O) 2.831(1) 2.501(0.7) 2.566(0.5) Fayalite Fe++2SiO4 2.831(1) 3.048(0.7) 3.91(0.6) Skinnerite Cu3SbS3 2.832(1) 3.242(0.42) 2.615(0.35) Jasmundite Ca11(SiO4)4O2S 2.832(1) 3.493(1) 4.15(0.9) Parapierrotite Tl(Sb,As)5S8 2.832(1) 9.4(0.8) 5.29(0.6) Overite CaMgAl(PO4)2(OH)·4(H2O) 2.833(1) 1.972(0.3) 2.888(0.2) Huntite CaMg3(CO3)4 2.833(1) 2.773(0.8) 4.87(0.7) Laphamite As2(Se,S)3 2.833(1) 4.804(0.86) 2.807(0.82) Hennomartinite SrMn+++2Si2O7(OH)2·(H2O) 2.836(1) 3.48(0.8) 2.809(0.8) Britholite-(Ce) (Ce,Ca,Th,La,Nd)5(SiO4,PO4)3(OH,F) 2.836(1) 3.631(0.99) 3.156(0.95) IMA2000-044 ! Pb1.6Cu1.6Bi6.4S12 2.837(1) 1.701(0.8) 2.572(0.8) Whitlockite Ca9(Mg,Fe++)(PO4)6(PO3OH) 2.837(1) 2.695(0.8) 3.94(0.6) Pinchite Hg++5O4Cl2 2.837(1) 11.6(0.93) 3.87(0.75) Tvedalite (Ca,Mn++)4Be3Si6O17(OH)4·3(H2O) 2.838(1) 2.583(0.8) 3.582(0.8) Holdenite (Mn,Mg)6Zn3(AsO4)2(SiO4)(OH)8 2.838(1) 2.74(0.53) 2.814(0.48) Fluorcaphite ! (Ca,Sr,Ce,Na)5(PO4)3F 2.839(1) 2.782(0.9) 2.833(0.9) Janhaugite (Na,Ca)3(Mn++,Fe++)3(Ti++++,Zr,Nb)2Si4O15(OH,F,O)3 2.839(1) 2.961(0.91) 11.385(0.43) Kentbrooksite ! (Na,REE)15(Ca,REE)6Mn++Zr3NbSi25O74F2·2(H2O) 2.839(1) 2.993(1) 3.15(0.9) Wagnerite (Mg,Fe++)2(PO4)F 2.839(1) 2.998(0.7) 3.25(0.6) Wohlerite NaCa2(Zr,Nb)Si2O7(O,OH,F)2 2.839(1) 3.15(0.9) 3.015(0.8) Grischunite NaCa2Mn++5Fe+++(AsO4)6·2(H2O) 2.839(1) 4.368(0.7) 6.103(0.4) Donnayite-(Y) Sr3NaCaY(CO3)6·3(H2O) 2.84(1) 1.56(0.7) 2.1(0.7) Imgreite ? NiTe 2.84(1) 1.75(0.8) 2.14(0.8) Beyerite (Ca,Pb)Bi2(CO3)2O2 2.84(1) 1.763(0.35) 3.66(0.35) Rhodochrosite MnCO3 2.84(1) 2.7(0.4) 3.66(0.35) Heliophyllite Pb6As2O7Cl4 2.84(1) 2.74(0.6) 1.85(0.5) Hydroxylellestadite Ca5(SiO4,SO4)3(OH,Cl,F) 2.84(1) 2.74(0.9) 1.852(0.8) Fluorellestadite Ca5(SiO4,PO4,SO4)3(F,OH,Cl) 2.84(1) 2.753(0.4) 3.12(0.4) Deloneite-(Ce) NaCa2SrCe(PO4)3F 2.84(1) 2.98(0.85) 3.23(0.8) Baghdadite Ca3(Zr,Ti)Si2O9 2.84(1) 3.11(0.8) 3.12(0.8) Hingganite-(Y) Y2([ ])Be2Si2O8(OH)2 2.84(1) 3.65(0.9) 2.28(0.7) Beryllonite NaBePO4 2.841(1) 2.963(0.92) 4.3(0.91) IMA2000-010 ! (Na,H3O)15(Ca,Mn,REE)6Fe+++2Zr3([ ],Zr)([ ],Si)Si24O66(O,OH)6Cl·2 2.842(1) 3.118(0.9) 2.594(0.5) Conichalcite CaCu(AsO4)(OH) 2.842(1) 3.773(0.94) 2.664(0.7) Carmichaelite ! (Ti,Cr,Fe)[O2-x(OH)x],x~0.5 2.843(1) 1.603(0.9) 2.728(0.8) Macedonite PbTiO3 2.845(1) 1.87(0.4) 2.822(0.4) Fluorbritholite-(Ce) (Ca,Ce,La,Na)5(SiO4,PO4)3(OH,F) 2.846(1) 2.013(0.7) 1.6439(0.21) Oldhamite (Ca,Mg,Fe,Mn)S 2.847(1) 4.14(1) 7.14(1) Silinaite NaLiSi2O5·2(H2O) 2.849(1) 3.071(0.5) 3.1(0.5) Foordite Sn++(Nb,Ta)2O6 2.849(1) 3.464(1) 3.594(0.9) Pavonite (Ag,Cu)(Bi,Pb)3S5 2.85(1) 1.51(0.9) 2.19(0.9) Barytolamprophyllite Ba2Na3(Fe+++,Ti)3(Si2O7)2(O,OH,F)4 2.85(1) 1.674(0.8) 1.82(0.6) Violarite Fe++Ni+++2S4 2.85(1) 1.803(0.9) 1.795(0.8) Godlevskite (Ni,Fe)7S6 2.85(1) 2.09(0.9) 2.97(0.9) Aphthitalite (K,Na)3Na(SO4)2 2.85(1) 2.1(0.8) 1.58(0.7) Shuangfengite IrTe2 2.85(1) 2.47(0.3) 3.12(0.3) Magnussonite Mn++5As+++3O9(OH,Cl) 2.85(1) 2.58(0.6) 3.19(0.6) Merrillite-(Ca) * (Ca,[ ])19Mg2(PO4)14 2.85(1) 2.58(0.6) 3.19(0.6) Merrillite-(Na) * Ca18Na2Mg2(PO4)14 2.85(1) 2.58(0.6) 3.19(0.6) Merrillite-(Y) * Ca16Y2Mg2(PO4)14 2.85(1) 2.72(0.8) 3.66(0.8) Ecdemite Pb6As+++2O7Cl4 2.85(1) 2.84(0.8) 3.09(0.5) Balyakinite CuTeO3 2.85(1) 3.08(0.8) 4.55(0.4) Wittichenite Cu3BiS3 2.85(1) 3.13(1) 2.572(0.8) Hingganite-(Yb) (Yb,Y)2([ ])Be2Si2O8(OH)2 2.85(1) 3.485(0.5) 3.63(0.5) Makovickyite Ag1.5Bi5.5S9 2.85(1) 3.85(0.8) 5.97(0.6) Wadeite K2ZrSi3O9 2.85(1) 5.89(0.85) 2.87(0.8) Natrolite Na2[Al2Si3O10]·2(H2O) 2.851(1) 3.427(0.8) 3.539(0.8) Benjaminite (Ag,Cu)3(Bi,Pb)7S12 2.852(1) 1.717(0.4) 2.548(0.3) Villamaninite (Cu,Ni,Co,Fe)S2 2.853(1) 2.674(0.73) 3.186(0.43) Derbylite (Fe+++,Fe++,Ti)7Sb+++O13(OH) 2.854(1) 2.977(0.81) 4.31(0.69) IMA2000-017 ! Na11Ca9(Fe+++,Fe++)2Zr3Nb[Si25O73](OH,H2O,Cl,O)5 2.854(1) 3.084(0.9) 2.926(0.65) Fukalite Ca4Si2O6(CO3)(OH,F)2 2.855(1) 2.475(0.5) 1.493(0.32) Lead Pb 2.855(1) 4.576(0.55) 9.16(0.55) Hopeite Zn3(PO4)2·4(H2O) 2.856(1) 3.02(1) 10.11(0.85) Iquiqueite K3Na4Mg(Cr++++++O4)B24O39(OH)·12(H2O) 2.856(1) 3.327(0.16) 3.416(0.1) Teallite PbSnS2 2.857(1) 2.944(1) 4.625(1) Thomsonite NaCa2Al5Si5O20·6(H2O) 2.857(1) 3.693(0.85) 5.055(0.75) Malachite Cu2(CO3)(OH)2 2.8577(1) 1.7619(0.27) 3.0791(0.24) Melilite (Ca,Na)2(Al,Mg,Fe++)(Si,Al)2O7 2.858(1) 1.489(0.8) 1.746(0.8) Murataite (Y,Na)6(Zn,Fe+++)5(Ti,Nb)12O29(O,F)14 2.859(1) 2.807(0.7) 3.234(0.3) Normandite * NaCa(Mn++,Fe++)(Ti,Nb,Zr)Si2O7(O,F)2 2.86(1) 0.933(0.8) 2.02(0.8) Kieftite CoSb3 2.86(1) 1.559(0.9) 3.26(0.8) IMA2000-007 ! (Mn,Mg)25.5[(V,As)O4]3(SiO4)3O5(OH)20 2.86(1) 1.62(0.9) 3.77(0.8) Perite PbBiO2Cl 2.86(1) 1.67(0.8) 2.36(0.7) Siegenite (Ni,Co)3S4 2.86(1) 1.674(0.8) 1.825(0.6) Carrollite Cu(Co,Ni)2S4 2.86(1) 1.97(0.4) 2.05(0.4) Breithauptite NiSb 2.86(1) 2.01(0.6) 1.81(0.3) Rhodplumsite Pb2Rh3S2 2.86(1) 2.03(0.8) 3.43(0.7) Incaite Pb4Sn4FeSb2S15 2.86(1) 2.34(0.9) 4.02(0.7) Parkerite Ni3(Bi,Pb)2S2 2.86(1) 2.64(0.3) 2.93(0.3) Braggite (Pt,Pd,Ni)S 2.86(1) 2.75(0.6) 3.49(0.5) Fermorite (Ca,Sr)5(AsO4,PO4)3(OH) 2.86(1) 2.91(1) 2.61(0.8) Vysotskite (Pd,Ni)S 2.86(1) 2.91(1) 3.44(1) Franckeite Pb5Sn3Sb2S14 2.86(1) 2.93(1) 2.14(0.9) Tyretskite Ca2B5O9(OH)·(H2O) 2.86(1) 2.95(1) 1.764(0.8) Nordite-(La) (Na,Mn)3(Sr,Ca)(La,Ce)(Zn,Mg)Si6O17 2.86(1) 2.96(0.9) 3.06(0.9) Latiumite (Ca,K)8(Al,Mg,Fe)(Si,Al)10O25(SO4) 2.86(1) 3.02(0.3) 1.044(0.2) Butschliite K2Ca(CO3)2 2.86(1) 3.16(0.75) 9.52(0.6) Syngenite K2Ca(SO4)2·(H2O) 2.86(1) 3.5(0.9) 2.715(0.7) Graftonite (Fe++,Mn,Ca)3(PO4)2 2.86(1) 5.79(0.7) 4.35(0.5) Mesolite Na2Ca2Al6Si9O30·8(H2O) 2.86(1) 9.3(0.8) 4.98(0.5) Keckite Ca(Mn,Zn)2Fe+++3(PO4)4(OH)3·2(H2O) 2.86(1) 9.34(0.7) 5(0.6) Wilhelmvierlingite CaMn++Fe+++(PO4)2(OH)·2(H2O) 2.86(1) 18.74(1) 8.97(0.9) Strashimirite Cu8(AsO4)4(OH)4·5(H2O) 2.862(1) 3.078(0.8) 1.963(0.5) Monazite-(Ce) (Ce,La,Nd,Th)PO4 2.863(1) 2.388(0.5) 2.653(0.5) Samfowlerite Ca14Mn++3Zn2(Be,Zn)2Be6(SiO4)6(Si2O7)4(OH,F)6 2.863(1) 3.49(1) 2.708(0.6) Beusite (Mn++,Fe++,Ca,Mg)3(PO4)2 2.866(1) 3.383(0.75) 2.831(0.72) Loveringite (Ca,REE)(Ti,Fe+++,Cr,Mg)21O38 2.867(1) 3.254(0.95) 7.98(0.9) Beryl Be3Al2Si6O18 2.867(1) 4.387(0.5) 6.549(0.5) Tetranatrolite Na2[Al2Si3O10]·2(H2O) 2.868(1) 2.03(0.9) 2.345(0.75) Elpasolite K2NaAlF6 2.868(1) 3.085(0.6) 3.711(0.5) Hardystonite Ca2ZnSi2O7 2.869(1) 2.965(0.8) 11.82(0.55) Hodgkinsonite MnZn2SiO4(OH)2 2.87(1) 1.76(0.3) 3.09(0.3) Akermanite Ca2MgSi2O7 2.87(1) 1.9(0.8) 1.998(0.8) Belovite * (Sr,Ce,Na,Ca)5(PO4)3(OH) 2.87(1) 2.68(0.6) 3.13(0.4) Paakkonenite Sb2AsS2 2.87(1) 2.686(0.5) 3.03(0.3) Caryinite (Na,Pb)(Ca,Na)(Ca,Mn++)(Mn++,Mg)2(AsO4)3 2.87(1) 3(0.9) 3.28(0.45) Hiortdahlite (Ca,Na,Y)3(Zr,Ti)Si2O7(F,O,OH)2 2.87(1) 3.05(0.9) 3.26(0.7) Triplite (Mn,Fe++,Mg,Ca)2(PO4)(F,OH) 2.87(1) 3.09(1) 4.2(0.7) Steenstrupine-(Ce) Na14Ce6Mn++Mn+++Fe++2(Zr,Th)(Si6O18)2(PO4)7·3(H2O) 2.87(1) 3.65(1) 3.9(1) Sahamalite-(Ce) (Mg,Fe++)Ce2(CO3)4 2.87(1) 3.7(0.7) 2.625(0.6) Antimonselite Sb2Se3 2.871(1) 4.28(0.9) 2.684(0.5) Gypsum CaSO4·2(H2O) 2.872(1) 2.829(0.78) 10.361(0.69) Chloroxiphite Pb3CuCl2(OH)2O2 2.872(1) 3.195(0.7) 2.982(0.6) Bustamite (Mn,Ca)3Si3O9 2.872(1) 11.51(1) 3.065(0.47) Tuscanite K(Ca,Na)6(Si,Al)10O22(SO4,CO3,(OH)2)·(H2O) 2.874(1) 2.204(0.9) 4.29(0.9) Papagoite CaCuAlSi2O6(OH)3 2.8785(1) 3.253(0.9) 5.39(0.8) Cervandonite-(Ce) (Ce,Nd,La)(Fe+++,Fe++,Ti++++,Al)3SiAs(Si,As)O13 2.879(1) 3.357(0.6) 3.127(0.5) Iltisite ! HgSAg(Cl,Br) 2.879(1) 3.564(0.7) 4.88(0.4) Bastnasite-(Ce) Ce(CO3)F 2.88(1) 2.05(0.9) 3.38(0.9) Bursaite Pb5Bi4S11 (?) 2.88(1) 2.702(0.8) 2.636(0.7) Quadruphite-VII Na14CaMgTi4[Si2O7]2(PO4)4O4F2 2.88(1) 2.702(0.8) 2.636(0.7) Quadruphite-VIII Na14CaMgTi4(Si2O7)2(PO4)4O4F2 2.88(1) 2.827(0.83) 2.029(0.64) Hilgardite Ca2B5O9Cl·(H2O) 2.88(1) 2.94(1) 3.45(0.9) Potosiite Pb6Sn2FeSb2S14 2.88(1) 2.95(0.8) 2.78(0.4) Iimoriite-(Y) Y2(SiO4)(CO3) 2.88(1) 2.98(0.95) 3.17(0.6) Clinoenstatite Mg2Si2O6 2.88(1) 2.98(1) 3.31(1) Fornacite Pb2Cu(CrO4)(AsO4)(OH) 2.88(0.7) 3.1(0.7) 3.29(0.6) Karnasurtite-(Ce) (Ce,La,Th)(Ti,Nb)(Al,Fe+++)(Si,P)2O7(OH)4·3(H2O) (?) 2.88(1) 3.18(0.9) 1.967(0.8) Klockmannite CuSe 2.88(1) 3.23(1) 2.6(0.8) Arsendescloizite PbZn(AsO4)(OH) 2.88(1) 3.35(0.6) 3.44(0.4) Hatchite (Pb,Tl)2AgAs2S5 2.88(1) 3.56(0.7) 4.88(0.4) Bastnasite-(La) La(CO3)F 2.88(1) 3.85(1) 5.73(0.5) Cylindrite Pb3Sn4FeSb2S14 2.88(1) 4.81(0.9) 2.6(0.8) Gadolinite-(Ce) (Ce,La,REE,Y)2Fe++Be2Si2O10 2.881(1) 3.028(1) 3.189(0.58) Rustumite Ca10(Si2O7)2(SiO4)Cl2(OH)2 2.882(1) 5.8(0.71) 6.08(0.5) Perhamite Ca3Al7(SiO4)3(PO4)(OH)3·16·5(H2O) 2.882(1) 5.85(1) 6.59(0.9) Scolecite CaAl2Si3O10·3(H2O) 2.883(1) 1.785(0.6) 2.191(0.5) Dolomite CaMg(CO3)2 2.883(1) 2.937(0.5) 3.223(0.46) Viitaniemiite Na(Ca,Mn++)Al(PO4)(F,OH)3 2.884(1) 2.826(0.9) 5.77(0.7) Sverigeite NaMnMgSn++++Be2Si3O12(OH) 2.884(1) 2.897(1) 3.59(0.87) Belovite-(La) ! (Sr,La,Ce,Ca)5(PO4)3(F,OH) 2.886(1) 2.041(0.55) 1.667(0.16) Bromargyrite AgBr 2.887(1) 2.921(1) 4.7(1) Larderellite (NH4)B5O6(OH)4 2.887(1) 3.434(0.7) 3.004(0.5) Wittite Pb3Bi4(S,Se)9 2.8897(1) 3.411(0.9) 3.295(0.88) Heteromorphite Pb7Sb8S19 2.89(1) 1.45(0.7) 2.26(0.7) Mongshanite * (Mg,Cr,Fe++)2(Ti,Zr)5O12 2.89(1) 1.589(0.9) 1.732(0.9) Kettnerite CaBi(CO3)OF 2.89(1) 1.776(0.8) 1.514(0.7) Kobeite-(Y) (Y,U)(Ti,Nb)2(O,OH)6 (?) 2.89(1) 1.789(0.4) 1.806(0.33) Minrecordite ! CaZn(CO3)2 2.89(1) 1.943(0.9) 2.63(0.9) Padmaite PdBiSe 2.89(1) 2.109(0.8) 1.99(0.7) Hexatestibiopanickelite (Ni,Pd)(Te,Sb) 2.89(1) 2.52(0.9) 3.06(0.8) Lammerite Cu3[(As,P)O4]2 2.89(1) 2.68(0.95) 3.07(0.9) Kilchoanite Ca3Si2O7 2.89(1) 2.78(0.7) 3.167(0.7) Strontium-apatite (Sr,Ca)5(PO4)3(F,OH) 2.89(1) 2.79(0.8) 2.59(0.7) Clinozoisite Ca2Al3(SiO4)3(OH) = Ca2AlAl2(SiO4)(Si2O7)O(OH) 2.89(1) 2.81(0.9) 3.22(0.5) Lavenite (Na,Ca)2(Mn,Fe++)(Zr,Ti,Nb)Si2O7(O,OH,F) 2.89(1) 2.99(1) 2.293(0.8) Alunite KAl3(SO4)2(OH)6 2.89(1) 3.19(1) 4.08(0.9) Sogdianite (K,Na)2(Li,Fe+++,Al)3ZrSi12O30 2.89(1) 3.35(0.6) 4.17(0.6) Raguinite TlFeS2 2.89(1) 3.45(0.9) 2.75(0.8) Miargyrite AgSbS2 2.89(1) 3.99(1) 7.25(0.8) Stokesite CaSnSi3O9·2(H2O) 2.89(1) 4.44(0.8) 3.63(0.7) Getchellite AsSbS3 2.891(1) 3.583(1) 7.25(1) Schneiderhohnite Fe++Fe+++3As+++5O13 2.891(1) 3.754(0.7) 2.775(0.5) Thorikosite Pb3(Sb+++,As+++)O3(OH)Cl2 2.892(1) 2.6(0.8) 2.682(0.8) Mukhinite Ca2Al2V+++(SiO4)3(OH) 2.894(1) 3.43(0.9) 1.981(0.75) Senaite Pb(Ti,Fe,Mn)21O38 2.895(1) 2.616(0.53) 3.506(0.41) Androsite-(La) (Mn,Ca)(La,Ce,Ca,Nd)AlMn+++Mn++(SiO4)(Si2O7)O(OH) 2.895(1) 2.711(0.9) 7.081(0.8) Rouvilleite Na3Ca2(CO3)3F 2.895(1) 2.798(0.7) 2.82(0.7) Johnbaumite Ca5(AsO4)3(OH) 2.895(1) 2.969(1) 2.755(0.7) Scandiobabingtonite ! Ca2(Fe++,Mn)ScSi5O14(OH) 2.895(1) 2.996(1) 3.363(1) Gustavite PbAgBi3S6 (?) 2.895(1) 3.42(0.72) 2.85(0.6) Davidite-(La) (La,Ce,Ca)(Y,U)(Ti,Fe+++)20O38 2.896(1) 2.691(0.7) 2.913(0.5) Sobolevite Na11(Na,Ca)4(Mg,Mn)Ti++++4(Si4O12)(PO4)4O5F3 2.896(1) 6.67(0.9) 4.72(0.8) Mammothite Pb6Cu4AlSb+++++O2(SO4)2Cl4(OH)16 2.899(1) 1.812(0.06) 2.199(0.06) Ankerite Ca(Fe++,Mg,Mn)(CO3)2 2.9(1) 1.69(0.7) 2.64(0.7) Shcherbakovite (K,Na,Ba)3(Ti,Nb)2Si4O14 2.9(1) 2.47(0.85) 3.159(0.71) Lacroixite NaAl(PO4)F 2.9(1) 2.702(0.8) 2.853(0.7) Gatehouseite Mn++5(PO4)2(OH)4 2.9(1) 2.74(0.5) 3.79(0.5) Pumpellyite-(Mg) Ca2MgAl2(SiO4)(Si2O7)(OH)2·(H2O) 2.9(1) 2.91(1) 3.79(0.9) Pumpellyite-(Fe+++) Ca2Fe+++Al2(SiO4)(Si2O7)(OH,O)2·(H2O) 2.9(1) 3.02(1) 3.21(0.8) Pigeonite (Mg,Fe++,Ca)(Mg,Fe++)Si2O6 2.9(1) 3.18(0.6) 1.781(0.3) Leightonite K2Ca2Cu(SO4)4·2(H2O) 2.9(1) 3.18(0.7) 2.85(0.16) Polyhalite K2Ca2Mg(SO4)4·2(H2O) 2.9(1) 6.369(0.9) 4.416(0.8) Aegirine NaFe+++Si2O6 2.901(1) 2.074(0.65) 2.026(0.51) Zlatogorite CuNiSb2 2.901(1) 3.082(0.4) 3.061(0.2) Pectolite NaCa2Si3O8(OH) 2.902(1) 1.819(0.33) 1.702(0.21) Ashoverite Zn(OH)2 2.902(1) 2.041(0.6) 1.55(0.5) Borovskite Pd3SbTe4 2.903(1) 2.598(0.5) 4(0.5) Piemontite Ca2(Al,Mn,Fe)3(SiO4)3(OH) = Ca2(Mn,Fe)Al2(SiO4)(Si2O7)O(OH) 2.903(1) 3.001(0.71) 2.886(0.53) Arcanite K2SO4 2.903(1) 15.7(1) 3.28(0.75) Chiavennite CaMnBe2Si5O13(OH)2·2(H2O) 2.905(1) 2.199(0.8) 3.521(0.8) IMA1996-034 Mg7(PO4)2(OH)8 2.907(1) 2.826(0.9) 3.43(0.6) Turneaureite Ca5[(As,P)O4]3Cl 2.907(1) 3.421(1) 3.652(0.8) Pollucite (Cs,Na)2Al2Si4O12·(H2O) 2.91(1) 2.16(0.5) 3.39(0.5) Batisite (Ba,K,Na)3Ti2Si4O14 2.91(1) 2.6(0.5) 3.49(0.5) Hancockite (Ca,Pb,Sr)2(Al,Fe+++)3(SiO4)(Si2O7)O(OH) 2.91(1) 2.63(0.8) 2.73(0.7) Khristovite-(Ce) (Ca,REE)(Ce,REE)(Mg,Fe,Cr,Ti,V,Al)Mn++Al(SiO4)(Si2O7)(OH)(F,O) 2.91(1) 2.75(0.6) 3.79(0.6) Pumpellyite-(Fe++) Ca2Fe++(Al,Fe+++)2(SiO4)(Si2O7)(OH)2·(H2O) 2.91(1) 2.82(0.9) 2.84(0.9) Svabite Ca5(AsO4)3F 2.91(1) 2.87(0.8) 4.42(0.8) Bartelkeite PbFe++Ge3O8 2.91(1) 2.99(0.8) 3.07(0.3) Aeschynite-(Y) (Y,Ca,Fe)(Ti,Nb)2(O,OH)6 2.91(1) 3.21(0.5) 4.85(0.5) Yoshimuraite (Ba,Sr)2(Mn,Fe)2(Ti,Fe)(Si2O7)2(PO4,SO4)(OH) 2.91(1) 3.34(0.7) 2.6(0.55) Schuetteite Hg3(SO4)O2 2.91(1) 3.43(0.95) 3.44(0.95) Vanthoffite Na6Mg(SO4)4 2.91(1) 4.42(0.75) 3.73(0.6) Muirite Ba10Ca2Mn++TiSi10O30(OH,Cl,F)10 2.91(1) 4.61(0.9) 3(0.8) Ferrosilite (Fe++,Mg)2Si2O6 2.91(1) 5.18(0.8) 2.32(0.7) Chiolite Na5Al3F14 2.911(1) 2.955(0.9) 3.286(0.9) Symesite ! Pb10(SO4)O7Cl4·(H2O) 2.911(1) 4.95(0.88) 3.596(0.79) Hydroxylbastnasite-(Nd) Nd(CO3)(OH) 2.912(1) 2.187(0.9) 1.959(0.7) Temagamite Pd3HgTe3 2.912(1) 2.832(0.9) 2.569(0.8) Taikanite (Ba,Sr)2Mn+++2Si4O12 2.912(1) 4.26(0.9) 3.8(0.7) Picotpaulite TlFe2S3 2.915(1) 1.895(0.75) 2.756(0.61) Takedaite Ca3(BO3)2 2.915(1) 2.709(0.7) 2.852(0.3) Dollaseite-(Ce) CaCeMg2AlSi3O11(OH,F)2 2.915(1) 4.46(0.9) 2.638(0.8) Mckelveyite-(Y) Ba3Na(Ca,U)Y(CO3)6·3(H2O) 2.915(1) 4.7(0.54) 4.21(0.4) Frankamenite K3Na3Ca5(Si12O30)[F,(OH)]4·(H2O) 2.916(1) 2.936(0.5) 3.493(0.5) Strontiopiemontite (Ca,Mn++)(Sr,Ca)Mn+++(Al,Mn+++,Fe+++)2(SiO4)(Si2O7)O(OH) 2.916(0.77) 3.739(0.41) 3.611(0.23) Krasnoselskite * CoWO4 2.916(1) 12.41(0.8) 3(0.74) Cetineite (K,Na)3+x(Sb2O3)3(Sb2S3)(OH)x·(2.8-x)(H2O) 2.918(1) 2.96(0.85) 3.41(0.85) Sorensenite Na4SnBe2Si6O18·2(H2O) 2.919(1) 5.037(0.9) 5.62(0.9) Duranusite As4S 2.92(1) 1.516(0.35) 1.721(0.3) Srilankite (Ti,Zr)O2 2.92(1) 1.74(0.6) 3.46(0.5) Viseite Ca10Al24(SiO4)6(PO4)7O22F3·72(H2O) (?) 2.92(1) 1.792(0.9) 1.534(0.8) Hiarneite ! (Ca,Mn,Na)2(Zr,Mn+++)5(Sb,Ti,Fe)2O16 2.92(1) 1.794(0.9) 1.535(0.8) IMA1996-040 Ca2(Zr,Ti)5(Sb+++++,Mn+++)2O16 2.92(1) 2.01(0.7) 2.13(0.6) Stibarsen SbAs 2.92(1) 2.09(0.9) 3.59(0.9) Hydroxylbastnasite-(Ce) Ce(CO3)(OH) 2.92(1) 2.1(0.6) 3.07(0.3) Merenskyite (Pd,Pt)(Te,Bi)2 2.92(1) 2.714(0.65) 3.53(0.45) Allanite-(Ce) (Ce,Ca,Y)2(Al,Fe+++)3(SiO4)3(OH) 2.92(1) 2.98(1) 3.49(1) Tvalchrelidzeite Hg12(Sb,As)8S15 2.92(1) 3.06(0.8) 4.21(0.6) Kasolite Pb(UO2)SiO4·(H2O) 2.92(1) 3.33(0.9) 4.76(0.9) Hillebrandite Ca6Si3O9(OH)6 2.92(1) 3.38(1) 3.02(0.8) Barylite BaBe2Si2O7 2.92(1) 3.51(1) 3.72(1) Neyite Pb7(Cu,Ag)2Bi6S17 2.92(1) 3.54(0.9) 8.42(0.8) Melkovite CaFe+++H6(MoO4)4(PO4)·6(H2O) 2.92(1) 3.7(0.8) 1.682(0.65) Kyzylkumite V+++2Ti3O9 2.92(1) 4.38(0.9) 3.44(0.55) Tincalconite Na2B4O5(OH)4·3(H2O) 2.92(1) 5.93(0.8) 4.44(0.6) Gonnardite Na2CaAl4Si6O20·7(H2O) 2.92(1) 6.71(1) 4.7(0.8) Sodium-boltwoodite (H3O)(Na,K)(UO2)SiO4·(H2O) 2.92(1) 9.38(0.8) 1.697(0.7) Chabazite-Sr ! (Sr,Ca,K2,Na2)[Al2Si4O12]·6(H2O) 2.921(1) 2.793(0.9) 4.205(0.75) Spodumene LiAlSi2O6 2.922(1) 3.572(0.6) 4.53(0.37) Sweetite Zn(OH)2 2.923(1) 3.069(0.75) 2.8(0.55) Hydrodelhayelite KCa2AlSi7O17(OH)2·6(H2O) 2.924(1) 2.665(0.9) 2.722(0.9) Hemloite (As,Sb)2(Ti,V,Fe,Al)12O23OH 2.924(1) 4.1(1) 7.25(0.7) Petarasite Na5Zr2Si6O18(Cl,OH)·2(H2O) 2.925(1) 3.151(1) 4.64(1) Amblygonite (Li,Na)Al(PO4)(F,OH) 2.926(1) 1.7(0.6) 2.467(0.5) Sanmartinite (Zn,Fe++)WO4 2.926(1) 2.036(0.8) 2.101(0.8) Bohdanowiczite AgBiSe2 2.926(1) 3.778(0.9) 1.642(0.5) Pinalite Pb3(WO4)OCl2 2.927(1) 3.435(0.44) 2.965(0.36) Dixenite Cu+Mn++14Fe+++(As+++O3)5(SiO4)2(As+++++O4)(OH)6 2.929(1) 2.976(1) 3.573(0.9) Watkinsonite PbCu2Bi4(Se,S)8 2.93(1) 1.651(0.9) 2.155(0.8) IMA2000-041 ! CaCe(Fe+++,Fe++,Al)3[SiO4][Si2O7]O(OH) 2.93(1) 1.66(0.8) 3.88(0.8) Blixite Pb2Cl(O,OH)2 2.93(1) 2.11(0.8) 2.02(0.7) Moncheite (Pt,Pd)(Te,Bi)2 2.93(1) 2.17(0.8) 5.66(0.8) Florencite-(Nd) (Nd,Ce)Al3(PO4)2(OH)6 2.93(1) 2.18(0.5) 12.52(0.5) Steigerite AlVO4·3(H2O) 2.93(1) 2.21(0.8) 4.8(0.8) Kafehydrocyanite * K4Fe++(CN)6·3(H2O) 2.93(1) 2.725(0.9) 4.75(0.65) Pumpellyite-(Mn++) Ca2(Mn++,Mg)(Al,Mn+++,Fe)2(SiO4)(Si2O7(OH)2·(H2O) 2.93(1) 2.82(0.4) 2.507(0.3) Zirconolite-2M CaZrTi2O7 2.93(1) 2.97(0.9) 1.826(0.9) Fedorite KNa4Ca4(Al,Si)16O36(OH,F)4·6(H2O) 2.93(1) 3(0.9) 1.575(0.7) Aeschynite-(Nd) (Nd,Ce)(Ti,Nb)2(O,OH)6 2.93(1) 3.09(0.9) 3.18(0.8) Wolfeite (Fe++,Mn++)2(PO4)(OH) 2.93(1) 3.785(0.48) 2.825(0.43) IMA1996-045 Pb8O4(OH)4Cl4 or Pb7.5B0.5(OH)3.5O4.5Cl4 2.93(1) 3.785(0.5) 2.825(0.4) Mereheadite ! Pb2O(OH)Cl 2.93(1) 4.32(0.65) 6.36(0.5) Herschelite ? (Na,Ca,K)AlSi2O6·3(H2O) 2.93(1) 5.66(0.71) 3.483(0.5) Waylandite BiAl3(PO4)2(OH)6 2.93(1) 5.67(0.9) 2.171(0.8) Florencite-(La) (La,Ce)Al3(PO4)2(OH)6 2.931(1) 2.824(0.39) 2.507(0.26) Zirkelite (Ca,Th,REE)Zr(Ti,Nb)2O7 2.931(1) 4.06(0.7) 7.37(0.6) Loudounite NaCa5Zr4Si16O40(OH)11·8(H2O) 2.933(1) 2.559(0.85) 3.962(0.55) Liddicoatite Ca(Li,Al)3Al6(BO3)3Si6O18(O,OH,F)4 2.933(1) 2.739(0.75) 4.55(0.7) Arsenoclasite Mn5(AsO4)2(OH)4 2.933(1) 4.49(0.9) 2.655(0.8) Mckelveyite-(Nd) * Na(Ba,Sr)3Ca(Nd,Ce,La)(CO3)6·3(H2O) (?) 2.934(1) 2.674(0.6) 3.09(0.45) Pyroxferroite (Fe++,Mn)7[Si7O21] 2.936(1) 3.093(1) 8.682(1) Barringtonite MgCO3·2(H2O) 2.936(1) 12.7(0.7) 2.608(0.35) Benleonardite Ag8(Sb,As)Te2S3 2.937(1) 2.702(0.9) 2.659(0.8) Polyphite-VII Na17Ca3Mg(Ti,Mn)4[Si2O7]2(PO4)6O2F6 2.937(1) 2.702(0.9) 2.659(0.8) Polyphite-VIII Na17Ca3Mg(Ti,Mn)4[Si2O7]2(PO4)6O2F6 2.937(1) 3.195(0.65) 3.369(0.6) Topaz Al2SiO4(F,OH)2 2.937(1) 3.888(0.51) 7.81(0.35) Belkovite Ba3(Nb,Ti)6(Si2O7)2O12 2.938(1) 2.998(1) 3.1(1) Manganbabingtonite Ca2(Mn,Fe++)Fe+++Si5O14(OH) 2.938(1) 3.175(1) 3.398(1) Ferrilotharmeyerite Ca(Zn,Cu++)(Fe+++,Zn)(AsO4)2(OH,H2O)2 2.94(1) 1.472(0.5) 3.37(0.5) Crerarite (Pt,Pb)Bi3(S,Se)4-x (x~0.7) 2.94(1) 1.71(0.9) 2.24(0.8) Uvanite U++++++2V+++++6O21·15(H2O) 2.94(1) 1.801(0.8) 1.535(0.5) Tennantite (Cu,Fe)12As4S13 2.94(1) 1.814(0.3) 1.837(0.25) Kutnohorite Ca(Mn,Mg,Fe++)(CO3)2 2.94(1) 1.82(0.8) 1.75(0.5) Polymignite (Ca,Fe,Y,Th)(Nb,Ti,Ta)O4 2.94(1) 1.89(0.94) 2.19(0.86) Woodhouseite CaAl3(PO4)(SO4)(OH)6 2.94(1) 1.983(0.9) 2.68(0.8) Testibiopalladite PdTe(Sb,Te) 2.94(1) 3(1) 1.581(0.7) Tantalaeschynite-(Y) (Y,Ce,Ca)(Ta,Ti,Nb)2O6 2.94(1) 3(0.9) 3.1(0.8) Roeblingite Pb2Ca6(Si6O18)(SO4)2(OH)2·4(H2O) 2.94(1) 3.06(0.8) 1.89(0.6) Rosenbuschite (Ca,Na)3(Zr,Ti)Si2O8F 2.94(1) 3.107(0.9) 3.221(0.7) Triploidite (Mn,Fe++)2(PO4)(OH) 2.94(1) 3.29(1) 1.65(0.8) Bazzite Be3(Sc,Al)2Si6O18 2.94(1) 4.43(0.9) 2.89(0.8) Orthojoaquinite-(Ce) NaFe++Ba2Ce2Ti2[Si4O12]2 O2(OH)·(H2O) 2.94(1) 5.92(0.6) 4.44(0.4) Paranatrolite Na2[Al2Si3O10]·3(H2O) 2.94(1) 6.6(0.8) 4.67(0.7) Mountainite (Ca,Na2,K2)2Si4O10·3(H2O) 2.941(1) 3.185(1) 3.824(0.94) Mazzite K2CaMg2(Al,Si)36O72·28(H2O) 2.941(1) 4.75(0.45) 3.752(0.35) Ferberite Fe++WO4 2.943(1) 3.445(0.9) 4.48(0.9) Stillwellite-(Ce) (Ce,La,Ca)BSiO5 2.9438(1) 3.922(0.85) 2.8132(0.3) Plumboferrite Pb2Fe+++(11-x)Mn++xO19-2x (x=1/3) 2.945(1) 5.24(0.6) 2.619(0.5) IMA2000-039 ! Ca2(C2O4)Cl2·2H2O 2.945(1) 5.71(0.95) 3.503(0.4) Zairite Bi(Fe+++,Al)3(PO4)2(OH)6 2.946(1) 3.011(1) 2.814(0.9) Sahlinite Pb14(AsO4)2O9Cl4 2.947(1) 2.55(0.7) 2.691(0.65) Rhonite Ca2(Mg,Fe++,Fe+++,Ti)6(Si,Al)6O20 2.948(1) 2.899(0.81) 2.503(0.66) Gartrellite Pb(Cu,Fe++)2(AsO4,SO4)2(CO3,H2O)0.7 2.949(1) 2.68(0.85) 2.604(0.8) Kirschsteinite CaFe++SiO4 2.949(1) 2.734(0.8) 2.83(0.8) Freedite Pb8Cu+(As+++O3)2O3Cl5 2.949(1) 3.831(0.9) 2.572(0.76) Julgoldite-(Fe++) Ca2Fe++(Fe+++,Al)2(SiO4)(Si2O7)(OH)2·(H2O) 2.95(1) 1.81(0.9) 1.55(0.9) Yttrotantalite-(Y) (Y,U,Fe++)(Ta,Nb)O4 2.95(1) 1.827(0.8) 6(0.8) Romeite (Ca,Fe++,Mn,Na)2(Sb,Ti)2O6(O,OH,F) 2.95(1) 1.943(0.8) 2.07(0.8) Hydroxylbastnasite-(La) * La(CO3)(OH) 2.95(1) 1.954(0.5) 3.47(0.42) Cerite-(Ce) Ce+++9Fe+++(SiO4)6[(SiO3)(OH)](OH)3 2.95(1) 2.18(0.7) 3.12(0.6) Pyroxmangite (Mn,Fe++)7[Si7O21] 2.95(1) 2.64(0.6) 3.68(0.6) Wegscheiderite Na5(CO3)(HCO3)3 2.95(1) 2.642(0.9) 3.159(0.7) Duhamelite Pb2Cu4Bi(VO4)4(OH)3·8(H2O) 2.95(1) 2.87(0.6) 3.3(0.4) Burpalite Na2CaZrSi2O7F2 2.95(1) 3.02(1) 3.09(0.25) Yttropyrochlore-(Y) (Y,Na,Ca,U)1-2(Nb,Ta,Ti)2(O,OH)7 2.95(1) 3.41(0.5) 4.2(0.4) Otjisumeite PbGe4O9 2.95(1) 3.5(0.7) 5.71(0.7) Florencite-(Ce) CeAl3(PO4)2(OH)6 2.95(1) 3.51(0.6) 5.65(0.55) Arsenoflorencite-(La) * (La,Sr)Al3(AsO4,SO4,PO4)2(OH)6 2.95(1) 3.51(0.6) 5.65(0.55) Arsenoflorencite-(Nd) * (Nd,La,Ce,Ba)(Al,Fe+++)3(AsO4,PO4)2(OH)6 2.95(1) 3.51(0.6) 5.7(0.55) Eylettersite (Th,Pb)1-xAl3(PO4,SiO4)2(OH)6 (?) 2.95(1) 3.65(0.5) 2.51(0.3) Ashanite ? (Nb,Ta,U,Fe,Mn)4O8 2.95(1) 3.78(0.8) 2.46(0.35) Otavite CdCO3 2.95(1) 3.84(0.8) 2.57(0.7) Julgoldite-(Fe+++) * Ca2Fe+++(Fe+++,Al)2(SiO4)(Si2O7)(O,OH)2·(H2O) 2.95(1) 3.92(0.9) 2.13(0.8) Dimorphite As4S3 2.95(1) 4.48(1) 5.5(0.6) Starkeyite MgSO4·4(H2O) 2.95(1) 5.91(0.9) 1.81(0.8) Partzite Cu2Sb2(O,OH)7 (?) 2.952(1) 2.622(0.68) 4.506(0.65) Yedlinite Pb6CrCl6(O,OH)8 2.953(1) 3.36(0.25) 4.96(0.25) Foshagite Ca4Si3O9(OH)2 2.955(1) 1.535(0.9) 1.723(0.9) Magnocolumbite (Mg,Fe++,Mn)(Nb,Ta)2O6 2.955(1) 4.36(0.92) 3.705(0.9) Ancylite-(La) ! Sr(La,Ce)(CO3)2(OH)·(H2O) 2.956(1) 2.756(0.94) 2.756(0.87) IMA2000-040 ! Ca19Mn+++(Al,Mn+++)10(Mg,Mn++)2Si18O69(OH)9 2.957(1) 1.627(0.6) 2.752(0.6) Asisite Pb7SiO8Cl2 2.957(1) 2.99(0.8) 2.065(0.7) Pyromorphite Pb5(PO4)3Cl 2.958(1) 2.87(0.65) 2.511(0.4) Kosmochlor NaCr+++Si2O6 2.959(1) 1.53(0.5) 1.981(0.35) Stishovite SiO2 2.959(1) 1.837(0.9) 3.178(0.9) Lapieite CuNiSbS3 2.959(1) 1.903(0.9) 3.514(0.9) Kemmlitzite (Sr,REE)Al3(AsO4)(SO4)(OH)6 2.959(1) 4.901(0.92) 2.975(0.47) Minamiite (Na,Ca,K)Al3(SO4)2(OH)6 2.959(1) 5.01(0.7) 4.33(0.4) Ferrisicklerite Li(Fe+++,Mn++)PO4 2.96(1) 1.45(0.8) 1.722(0.8) Lithiotantite Li(Ta,Nb)3O8 2.96(1) 1.773(0.8) 3.65(0.7) Qitianlingite Fe++2Nb2W++++++O10 2.96(1) 1.814(0.45) 1.546(0.4) Betafite (Ca,Na,U)2(Ti,Nb,Ta)2O6(OH) 2.96(1) 2.059(0.86) 3.494(0.65) Proudite (Pb,Cu)8Bi9-10(S,Se)22 2.96(1) 2.28(0.9) 2.64(0.9) Selenostephanite Ag5Sb(Se,S)4 2.96(1) 2.82(0.65) 5.34(0.65) Perrierite (Ce,La,Ca)4(Fe++,Mg)2(Ti,Fe+++)3Si4O22 2.96(1) 2.97(0.8) 2.92(0.7) Nambulite (Li,Na)Mn++4[Si5O14(OH)] 2.96(1) 2.99(1) 5.622(0.65) Biehlite ! (Sb,As)2MoO6 2.96(1) 3.03(1) 1.55(0.6) Niobo-aeschynite-(Ce) (Ce,Ca)(Nb,Ti)2(O,OH)6 2.96(1) 3.04(0.7) 3.16(0.6) Calcjarlite Na(Ca,Sr)3Al3(F,OH)16 2.96(1) 3.05(1) 3.94(1) Catapleiite (Na,Ca,[ ])2ZrSi3O9·2(H2O) 2.96(1) 3.06(0.8) 3.96(0.8) Calciumcatapleiite (Ca,[ ])ZrSi3O9·2(H2O) 2.96(1) 3.35(0.75) 3.37(0.7) Monetite CaHPO4 2.96(1) 3.42(0.9) 3.24(0.7) Thalfenisite Tl6(Fe,Ni,Cu)25S26Cl 2.96(1) 3.66(0.5) 1.721(0.2) Ferrotantalite Fe++Ta2O6 2.96(1) 3.7(0.9) 3.48(0.5) Coeruleolactite (Ca,Cu)Al6(PO4)4(OH)8·4-5(H2O) 2.96(1) 3.71(1) 4.34(1) Ancylite-(Ce) SrCe(CO3)2(OH)·(H2O) 2.96(1) 3.96(0.9) 2.67(0.7) Cymrite BaAl2Si2O8·(H2O) 2.96(1) 4.9(0.75) 2.97(0.7) Natroalunite NaAl3(SO4)2(OH)6 2.96(1) 4.92(0.7) 2.98(0.5) Schlossmacherite (H3O,Ca)Al3(AsO4,SO4)2(OH)6 2.96(1) 5.93(0.9) 1.81(0.8) Stibiconite Sb+++Sb+++++2O6(OH) 2.96(1) 8.88(0.65) 4.43(0.45) Katoptrite (Mn,Mg)13(Al,Fe+++)4Sb+++++2Si2O28 2.96(1) 15.4(0.5) 3.51(0.4) Traskite (Ba,Ca)9(Fe++,Mn)2Ti2(SiO3)12(OH,Cl,F)6·6(H2O) 2.961(1) 2.72(0.7) 3.87(0.7) Okhotskite-(Mn++) * Ca2(Mn++,Mg)(Mn+++,Al,Fe+++)Si3O10(OH)4 2.961(1) 3.073(0.9) 1.896(0.7) Hainite Na2Ca4(Ti,Zr,Mn,Fe)2(Si2O7)F4 2.961(1) 3.12(1) 3.546(0.8) Petrovicite PbHgCu3BiSe5 2.962(1) 2.366(0.7) 2.545(0.6) Natrite Na2CO3 2.962(1) 3.182(0.87) 3.393(0.83) IMA1999-008 ! Ca(Ni,Fe,Co)2(AsO4)2(OH,H2O)2 2.963(1) 1.716(0.7) 3.641(0.7) Wolframoixiolite * (Fe,Mn,Nb)(Nb,W,Ta)O4 2.963(1) 2.939(0.9) 3.626(0.7) Ferrotitanowodginite ! Fe++TiTa2O8 2.963(1) 3.242(1) 2.847(0.9) Irhtemite Ca4Mg(AsO3OH)2(AsO4)2·4(H2O) 2.963(1) 3.513(0.6) 1.905(0.5) Arsenoflorencite-(Ce) (Ce,La)Al3(AsO4)2(OH)6 2.964(1) 2.844(0.891) 11.348(0.442) Oneillite ! Na15Ca3Mn3Fe++3Zr3Nb(Si25O73)(O,OH,H2O)3(OH,Cl)2 2.965(1) 2.577(0.9) 2.043(0.8) Uvite (Ca,Na)(Mg,Fe++)3Al5Mg(BO3)3Si6O18(OH,F)4 2.965(1) 5.704(0.65) 2.209(0.45) Goyazite SrAl3(PO4)2(OH)5·(H2O) 2.966(1) 2.525(0.9) 2.348(0.7) Tiptopite K2(Na,Ca)2Li3Be6(PO4)6(OH)2·(H2O) 2.966(1) 2.7(0.9) 3.527(0.9) Esperanzaite ! NaCa2Al2(As+++++O4)2F4(OH)·2(H2O) 2.966(1) 2.7(0.9) 3.527(0.9) IMA1998-025 NaCa2Al2(AsO4)[AsO3(OH)](OH)2F4·(H2O) 2.966(1) 5.94(1) 3.1(0.9) Ferritungstite (K,Ca,Na)(W++++++,Fe+++)2(O,OH)6·(H2O) 2.967(1) 1.569(0.9) 1.848(0.9) Bismutopyrochlore ! (Bi,U,Ca,Pb)1+x(Nb,Ta)2O6(OH)·n(H2O) 2.967(1) 2.625(0.9) 5.34(0.8) Tatarskite Ca6Mg2(SO4)2(CO3)2Cl4(OH)4·7(H2O) 2.967(1) 2.834(0.8) 2.408(0.65) Montroydite HgO 2.968(1) 2.847(0.98) 3.391(0.51) IMA1999-046 ! Na15Ca6Fe3Zr3NbSi25O73(O,OH,H2O)3Cl2 2.968(1) 3.164(0.9) 4.672(0.7) Montebrasite LiAl(PO4)(OH,F) 2.969(1) 2.587(0.6) 2.782(0.6) Yeatmanite Mn++9Zn6Sb+++++2Si4O28 2.969(1) 3.429(0.84) 2.099(0.57) Galena PbS 2.97(1) 1.54(0.7) 3.58(0.6) Kolicite Mn7Zn4(AsO4)2(SiO4)2(OH)8 2.97(1) 1.82(0.6) 1.55(0.3) Goldfieldite Cu12(Te,Sb,As)4S13 2.97(1) 1.82(0.5) 1.55(0.4) Zirconolite-3O (Ca,Fe,Y,Th)2Fe(Ti,Nb)3Zr2O7 2.97(1) 1.83(0.7) 2.87(0.7) Seidozerite (Na,Ca)2(Zr,Ti,Mn)2Si2O7(O,F)2 2.97(1) 2.094(0.9) 2.112(0.8) Sorosite ! Cu(Sn,Sb) 2.97(1) 2.18(0.45) 5.75(0.35) Crandallite CaAl3(PO4)2(OH)5·(H2O) 2.97(1) 2.53(0.5) 2.56(0.3) Hedenbergite CaFe++Si2O6 2.97(1) 2.6(0.9) 3.08(0.25) Nahcolite NaHCO3 2.97(1) 2.939(0.95) 2.926(0.5) Okanoganite-(Y) (Na,Ca)3(Y,Ce)12Si6B2O27F14 2.97(1) 3.011(0.8) 3.375(0.6) Rankamaite (Na,K,Pb,Li)3(Ta,Nb,Al)11(O,OH)30 2.97(1) 3.06(0.9) 1.6(0.8) Natroniobite NaNbO3 2.97(1) 3.14(1) 3.33(1) Magniotriplite (Mg,Fe++,Mn)2(PO4)F 2.97(1) 3.52(0.8) 3.83(0.8) Wollastonite-2M CaSiO3 2.97(1) 4.16(0.5) 2.493(0.4) Ferrowodginite Fe++SnTa2O8 2.97(1) 4.91(0.75) 2.231(0.51) Huangite Ca0.5Al3(SO4)2(OH)6 2.97(1) 5.42(0.8) 5.89(0.6) Demesmaekerite Pb2Cu5(UO2)2(SeO3)6(OH)6·2(H2O) 2.97(1) 5.73(0.8) 3.51(0.6) Plumbogummite PbAl3(PO4)2(OH)5·(H2O) 2.97(1) 7.85(0.9) 3.87(0.8) Yavapaiite KFe+++(SO4)2 2.971(1) 1.55(0.8) 1.819(0.7) Ingersonite Ca3Mn++Sb+++++4O14 2.971(1) 2.495(0.75) 3.497(0.4) Sicklerite Li(Mn++,Fe+++)PO4 2.971(1) 2.515(0.8) 2.558(0.8) Dorrite Ca2Mg2Fe+++4(Al,Fe+++)4Si2O20 2.971(1) 2.809(0.85) 2.857(0.58) Stanekite ! Fe+++(Mn,Fe++,Mg)(PO4)O 2.971(1) 3.583(0.09) 3.651(0.09) Weissbergite TlSbS2 2.972(1) 3.295(0.98) 2.731(0.63) Celestine SrSO4 2.973(1) 1.82(0.53) 1.552(0.45) Calciobetafite Ca2(Ti,Nb)2(O,OH)7 2.974(1) 3.03(1) 4.821(0.9) Vigezzite (Ca,Ce)(Nb,Ta,Ti)2O6 2.975(1) 2.752(0.3) 3.99(0.3) Philolithite ! Pb12O6Mn(Mg,Mn)2(Mn,Mg)4(SO4)(CO3)4Cl4(OH)12 2.975(1) 3.024(0.8) 3.106(0.35) Aeschynite-(Ce) (Ce,Ca,Fe)(Ti,Nb)2(O,OH)6 2.975(1) 3.177(0.8) 1.837(0.7) Muckeite CuNiBiS3 2.976(1) 2.966(0.95) 3.644(0.46) IMA2000-026 ! (Mn,Li)4(Ta,Sn)4(Ta,Nb)8O32 2.976(1) 2.966(0.95) 3.644(0.46) Titanowodginite (Mn++,Fe++)(Ti,Sn)(Ta,Nb)2O8 2.977(1) 3.675(0.4) 1.726(0.16) Ferrocolumbite Fe++Nb2O6 2.978(1) 3.663(0.7) 2.339(0.65) IMA1998-004 ! Pb32As40S92 2.979(1) 3.38(1) 6.43(0.5) Phoenicochroite Pb2(CrO4)O 2.98(1) 1.4(0.8) 2.13(0.7) Omphacite (Ca,Na)(Mg,Fe++,Al)Si2O6 2.98(1) 1.563(0.8) 1.836(0.8) Microlite (Na,Ca)2Ta2O6(O,OH,F) 2.98(1) 1.601(0.9) 1.799(0.7) Romarchite SnO 2.98(1) 1.746(0.77) 2.469(0.55) Greigite Fe++Fe+++2S4 2.98(1) 1.82(0.5) 1.75(0.3) Zirconolite-3T CaZrTi2O7 2.98(1) 2.283(0.8) 1.909(0.7) Walthierite Ba0.5Al3(SO4)2(OH)6 2.98(1) 2.77(0.8) 1.642(0.7) Lorettoite * Pb7O6Cl2 2.98(1) 2.92(0.9) 3.13(0.4) Samarskite-(Y) (Y,Fe+++,U)(Nb,Ta)5O4 2.98(1) 3.19(0.9) 2.15(0.7) Jarlite Na(Sr,Na,[ ])7(Mg,[ ])Al6F32(OH,H2O)2 2.98(1) 3.62(0.8) 3.49(0.6) Christite TlHgAsS3 2.98(1) 3.65(0.32) 1.459(0.29) Ixiolite (Ta,Nb,Sn,Mn++,Fe++)O2 2.98(1) 3.69(0.8) 3.74(0.8) Koragoite (Mn++,Fe+++)3(Nb,Ta,Ti)2(Nb,Mn)2(W,Ta)2O20 2.98(1) 4.82(0.9) 5.91(0.7) Olivenite Cu2AsO4(OH) 2.98(1) 5.7(0.9) 2.438(0.8) Inaglyite PbCu3(Ir,Pt)8S16 2.98(1) 5.77(0.9) 3.53(0.6) Lusungite (Sr,Pb)Fe+++3(PO4)2(OH)·(H2O) 2.98(1) 11.5(0.9) 2.856(0.8) Khomyakovite ! Na12Sr3Ca6Fe3Zr3W(Si25O73)(O,OH,H2O)3 (OH,Cl)2 2.98(1) 11.5(0.9) 2.856(0.8) Manganokhomyakovite ! Na12Sr3Ca6Mn3Zr3W(Si25O73)(O,OH,H2O)3(OH,Cl)2 2.981(1) 2.737(0.8) 3.1(0.6) Sundiusite Pb10(SO4)Cl2O8 2.981(1) 3.51(0.9) 5.73(0.9) Hidalgoite PbAl3(AsO4)(SO4)(OH)6 2.982(1) 1.833(0.8) 1.562(0.7) Jixianite Pb(W,Fe+++)2(O,OH)7 2.983(1) 2.44(0.5) 3.27(0.5) Rhodizite (K,Cs)Al4Be4(B,Be)12O28 2.983(1) 2.816(0.78) 1.989(0.75) Parkinsonite (Pb,Mo,[ ])8O8Cl2 2.983(1) 3.158(0.9) 2.838(0.65) Serandite Na(Mn++,Ca)2Si3O8(OH) 2.985(1) 1.845(0.4) 2.548(0.35) Stenhuggarite CaFe+++(As+++O2)(As+++Sb+++O5) 2.985(1) 11.972(1) 3.54(0.6) Tlapallite H6(Ca,Pb)2Cu3(SO4)(Te++++O3)4(Te++++++O6) 2.986(1) 3.1(1) 1.911(0.5) Gotzenite (Ca,Na)3(Ti,Al)Si2O7(F,OH)2 2.987(1) 3.65(0.82) 2.94(0.5) Lithiowodginite LiTa3O8 2.987(1) 4.345(0.81) 2.861(0.7) IMA2000-028 ! Na27K8Ca12Fe3Zr6Si52O144(O,OH,H2O)6Cl2 2.988(1) 3.068(0.85) 3.384(0.6) Vanadinite Pb5(VO4)3Cl 2.988(1) 3.404(0.86) 1.873(0.55) Paratellurite TeO2 2.988(1) 4.13(0.4) 4.32(0.4) Mattheddleite Pb20(SiO4)7(SO4)4Cl4 2.989(1) 1.561(0.4) 1.83(0.4) Stibiobetafite (Sb+++,Ca)2(Ti,Nb,Ta)2(O,OH)7 2.989(1) 3.034(0.91) 5.097(0.8) Margarosanite Pb(Ca,Mn++)2Si3O9 2.989(1) 4.05(0.5) 4.81(0.5) Carbocernaite (Ca,Na)(Sr,Ce,Ba)(CO3)2 2.989(1) 4.146(1) 2.495(0.9) Routhierite TlCu(Hg,Zn)2(As,Sb)2S3 2.99(1) 1.736(0.6) 2.14(0.4) Kashinite (Ir,Rh)2S3 2.99(1) 1.75(0.9) 2.471(0.8) Ferrorhodsite (Fe,Cu)(Rh,Ir,Pt)2S4 2.99(1) 1.799(0.9) 5.54(0.8) Rasvumite KFe2S3 2.99(1) 1.9(0.5) 1.48(0.4) Uranopolycrase (U,Y)(Ti,Nb,Ta)2O6 2.99(1) 2.09(0.9) 2.91(0.7) Calaverite AuTe2 2.99(1) 2.113(0.7) 2.441(0.5) IMA1999-014 ! (Cs,K)Al4Be4(B,Be)12O28 2.99(1) 2.296(0.95) 2.963(0.94) Georgbokiite ! Cu5O2(SeO3)2Cl2 2.99(1) 2.7(0.2) 6.58(0.2) Walstromite BaCa2Si3O9 2.99(1) 2.95(0.4) 3.66(0.4) Euxenite-(Y) (Y,Ca,Ce)(Nb,Ta,Ti)2O6 2.99(1) 3.08(0.9) 3.24(0.7) Trigonite Pb3Mn(As+++O3)2(As+++O2OH) 2.99(1) 3.09(1) 3.4(1) Epididymite NaBeSi3O7(OH) 2.99(1) 3.22(0.8) 3.35(0.6) Roselite Ca2(Co,Mg)(AsO4)2·2(H2O) 2.99(1) 3.47(0.7) 3.73(0.7) Livingstonite HgSb4S8 2.99(1) 3.55(0.9) 1.769(0.6) Arsenocrandallite (Ca,Sr)Al3[(As,P)O4]2(OH)5·(H2O) 2.99(1) 3.69(0.9) 2.41(0.7) Manganotantalite MnTa2O6 2.991(1) 2.528(0.4) 2.893(0.3) Diopside CaMgSi2O6 2.991(1) 3.695(0.35) 1.7358(0.14) Manganocolumbite (Mn,Fe++)(Nb,Ta)2O6 2.992(1) 4.232(0.85) 2.77(0.8) Galkhaite (Cs,Tl)(Hg,Cu,Zn)6(As,Sb)4S12 2.993(1) 2.635(0.7) 2.517(0.6) Vuagnatite CaAlSiO4(OH) 2.993(1) 2.95(0.7) 7.7(0.5) Vicanite-(Ce) (Ca,Ce,La,Th)15As+++++(As+++0.5,Na0.5)Fe+++Si6B4O40F7 2.993(1) 6.502(0.69) 4.245(0.54) Ussingite Na2AlSi3O8(OH) 2.994(1) 2.766(0.8) 3.226(0.6) Wendwilsonite Ca2(Mg,Co)(AsO4)2·2(H2O) 2.995(1) 3.43(0.7) 1.714(0.6) Bukovite Tl2Cu3FeSe4 2.996(1) 2.954(0.95) 4.84(0.65) Hubnerite MnWO4 2.996(1) 3.173(0.7) 3.502(0.7) Stibivanite Sb+++2V++++O5 2.996(1) 8.4(1) 5.2(0.6) Francevillite (Ba,Pb)(UO2)2V2O8·5(H2O) 2.996(1) 14.29(1) Lintisite Na3LiTi2Si4O14·2(H2O) 2.997(1) 1.568(0.9) 1.838(0.9) Bismutomicrolite (Bi,Ca)(Ta,Nb)2O6(OH) 2.997(1) 2.953(0.95) 2.824(0.9) Bario-orthojoaquinite Fe++2(Ba,Sr)4Ti2[Si4O12]O2·(H2O) 2.998(1) 5.99(0.77) 1.833(0.4) Bartonite K3Fe10S14 2.999(1) 1.833(0.4) 1.594(0.2) Watanabeite Cu4(As,Sb)2S5 2.999(1) 3.252(0.91) 3.283(0.89) Zincgartrellite ! Pb(Zn,Fe,Cu)2(AsO4)2(OH,H2O)2 3(1) 1.831(0.6) 1.563(0.3) Tetrahedrite (Cu,Fe)12Sb4S13 3(1) 1.838(0.6) 1.568(0.5) Pyrochlore (Na,Ca)2Nb2O6(OH,F) 3(1) 2.41(0.7) 6.7(0.7) Liebauite Ca3Cu5Si9O26 3(0.9) 2.427(0.5) 2.52(0.5) Kurilite * (Ag,Au)2(Te,Se,S) 3(1) 2.526(0.7) 2.96(0.6) Esseneite CaFe+++AlSiO6 3(1) 2.54(0.9) 1.72(0.8) Blakeite * Fe2(TeO3)3 3(1) 2.82(0.6) 3.14(0.3) Xanthoconite Ag3AsS3 3(1) 2.84(0.9) 3.11(0.5) Antimonpearceite (Ag,Cu)16(Sb,As)2S11 3(1) 2.84(0.9) 3.11(0.5) Pearceite Ag16As2S11 3(1) 2.95(0.7) 3.67(0.7) Wodginite Mn++(Sn,Ta)(Ta,Nb)2O8 3(1) 3.19(0.9) 2.88(0.8) Arsenpolybasite (Ag,Cu)16(As,Sb)2S11 3(1) 3.19(0.9) 2.88(0.8) Polybasite (Ag,Cu)16Sb2S11 3(1) 3.22(0.8) 5.1(0.6) Zincroselite Ca2Zn(AsO4)2·2(H2O) 3(1) 3.26(0.6) 2.94(0.55) Jagowerite BaAl2(PO4)2(OH)2 3(1) 3.27(1) 2.78(0.9) Arsenbrackebuschite Pb2(Fe++,Zn)(AsO4)2·(H2O) 3(1) 3.78(0.55) 2.072(0.35) Selenium Se 3(1) 4.98(1) 4.06(0.8) Spiroffite (Mn,Zn)2Te3O8 3(1) 5.34(0.6) 3.62(0.55) Teschemacherite (NH4)HCO3 3(1) 5.75(0.7) 3.52(0.6) Osarizawaite PbCuAl2(SO4)2(OH)6 3.001(1) 4.26(0.87) 3.333(0.86) Anglesite PbSO4 3.002(1) 5.753(0.8) 3.516(0.7) Gorceixite BaAl3(PO4)(PO3OH)(OH)6 3.004(1) 2.661(0.8) 3.288(0.37) Strontiowhitlockite Sr7(Mg,Ca)3(PO4)6[PO3(OH)] 3.005(1) 3.095(0.85) 2.895(0.65) Tilleyite Ca5Si2O7(CO3)2 3.005(1) 8.19(1) 4.1(0.8) Curienite Pb(UO2)2V2O8·5(H2O) 3.006(1) 2.807(0.85) 6(0.7) Bassanite 2CaSO4·(H2O) 3.006(1) 3.267(0.71) 3.042(0.66) Tiragalloite Mn++4As+++++Si3O12(OH) 3.006(1) 3.505(1) 6.2(1) Grumantite NaHSi2O5·(H2O) 3.007(1) 2.71(0.7) 5.1(0.6) Panethite (Na,Ca,K)2(Mg,Fe++,Mn)2(PO4)2 3.008(1) 5.72(0.9) 3.373(0.6) Deanesmithite Hg+2Hg++3Cr++++++O5S2 3.009(1) 14.49(0.9) 4.815(0.8) Kukisvumite Na6ZnTi4Si8O28·4(H2O) 3.01(1) 1.833(0.7) 2.6(0.7) Bismutostibiconite Bi(Sb+++++,Fe+++)2O7 3.01(1) 1.84(0.8) 1.575(0.6) Uranpyrochlore (U,Ca,Ca)2(Nb,Ta)2O6(OH,F) 3.01(1) 1.844(0.9) 1.573(0.8) Tantite Ta2O5 3.01(1) 1.85(0.25) 2.61(0.18) Bindheimite Pb2Sb2O6(O,OH) 3.01(1) 1.97(0.75) 2.19(0.7) Strontiochevkinite (Sr,REE)4Fe(Ti,Zr)2Ti2Si4O22 3.01(1) 2.1(0.6) 1.771(0.2) Cherepanovite RhAs 3.01(1) 2.584(0.55) 3.83(0.5) Taramellite Ba4(Fe+++,Ti,Fe++,Mg)4(B2Si8O27)O2Clx (x=0 to 1) 3.01(1) 2.584(0.55) 3.83(0.5) Titantaramellite Ba4(Ti,Fe+++,Fe++,Mg)4(B2Si8O27)O2Clx X=0 TO 1, with Ti > Fe 3.01(1) 2.71(0.8) 1.788(0.3) Maslovite PtBiTe 3.01(1) 2.85(0.6) 2.89(0.6) Niocalite Ca14Nb2(Si2O7)4O6F2 3.01(1) 2.913(0.9) 3.19(0.9) Lithiomarsturite LiCa2Mn2HSi5O15 3.01(1) 2.98(0.9) 6.31(0.8) Baylissite K2Mg(CO3)2·4(H2O) 3.01(1) 3.14(0.9) 6.03(0.8) Stibiomicrolite (Sb,Ca,Na)2(Ta,Nb)2(O,OH)7 3.01(1) 3.16(0.7) 2.817(0.4) Gorgeyite K2Ca5(SO4)6·(H2O) 3.01(1) 3.181(0.51) 2.678(0.42) Sigismundite ! (Ba,K,Pb)Na3(Ca,Sr)(Fe++,Mg,Mn)14Al(OH)2(PO4)12 3.01(1) 3.241(0.7) 3.373(0.55) Brandtite Ca2(Mn,Mg)(AsO4)2·2(H2O) 3.01(1) 5.8(0.8) 3.54(0.7) Weilerite * BaAl3H[(As,P)O4]2(OH)6 3.011(1) 2.456(0.8) 2.547(0.8) Nchwaningite Mn++2SiO3·(H2O) 3.011(1) 3.372(0.77) 2.75(0.62) Brendelite ! (Bi,Pb)2Fe(PO4)(O,OH)3 3.011(1) 10.15(0.88) 3.319(0.75) Cerchiaraite ! Ba4(Mn,Fe,Al)4Si6(O,OH,Cl)26 3.012(1) 2.965(0.8) 3.945(0.6) Perroudite Hg5-xAg4+xS5-x(Cl,I,Br)4+x 3.014(1) 3.15(0.19) 2.784(0.18) Riversideite Ca5Si6O16(OH)2·2(H2O) 3.015(1) 1.846(0.59) 1.574(0.47) IMA1998-018 ! (Na,Ca,Bi)2Ta2O6F 3.015(1) 2.656(0.35) 3.86(0.35) Norsethite BaMg(CO3)2 3.015(1) 3.234(1) 3.338(1) Olsacherite Pb2(SeO4)(SO4) 3.015(1) 5.72(0.95) 3.8(0.72) Cobaltomenite CoSeO3·2(H2O) 3.017(1) 2.534(0.75) 7.62(0.45) Esperite PbCa3Zn4(SiO4)4 3.018(1) 3.574(0.75) 5.58(0.7) Namibite Cu++Bi2(VO4)O2 3.02(1) 1.506(0.6) 2.81(0.6) Nagyagite AuPb(Sb,Bi)Te2-3S6 3.02(1) 1.581(0.9) 1.861(0.9) Plumbopyrochlore (Pb,Y,U,Ca)2-xNb2O6(OH) 3.02(1) 1.85(0.7) 2.61(0.7) Stetefeldtite Ag2Sb2(O,OH)7 (?) 3.02(1) 1.863(0.5) 2.66(0.4) Canfieldite Ag8SnS6 3.02(1) 2(0.9) 2.07(0.9) Garrelsite-V Ba3NaSi2B7O16(OH)4 3.02(1) 2(0.9) 2.07(0.9) Garrelsite-VIII Ba3NaSi2B7O16(OH)4 3.02(1) 2.13(0.8) 2.81(0.8) Ningyoite (U,Ca,Ce)2(PO4)2·1-2(H2O) 3.02(1) 2.13(0.8) 3.3(0.8) Daomanite CuPtAsS2 3.02(1) 2.537(0.8) 2.96(0.4) Petedunnite Ca(Zn,Mn++,Fe++,Mg)Si2O6 3.02(1) 2.778(0.9) 1.556(0.8) Natrotantite Na2Ta4O11 3.02(1) 2.83(0.8) 4.4(0.8) Rhabdophane-(La) (La,Ce)PO4·(H2O) 3.02(1) 2.991(0.8) 3.204(0.55) Scawtite Ca7Si6(CO3)O18·2(H2O) 3.02(1) 3.03(0.6) 2.592(0.28) Nagashimalite Ba4(V+++,Ti)4Si8B2O27Cl(O,OH)2 3.02(1) 3.55(0.8) 5.84(0.8) Arsenogorceixite ! BaAl3AsO3(OH)(AsO4,PO4)(OH,F)6 3.02(1) 5.82(0.9) 3.56(0.8) Philipsbornite PbAl3(AsO4)2(OH)5·(H2O) 3.02(1) 5.91(0.9) 2.87(0.8) Umbite K2ZrSi3O9·(H2O) 3.022(1) 3.51(1) 2.615(0.9) Davanite K2TiSi6O15 3.022(1) 4.34(0.5) 2.205(0.3) Ikunolite Bi4(S,Se)3 3.023(1) 5.04(0.93) 2.996(0.5) Ammonioalunite (NH4)Al3(SO4)2(OH)6 3.024(1) 1.852(0.8) 1.581(0.7) Sinnerite Cu6As4S9 3.0244(1) 4.4198(0.91) 3.493(0.88) Ximengite BiPO4 3.0253(1) 3.2064(1) 2.7976(0.5) Fergusonite-beta-(Nd) (Nd,Ce)NbO4 3.028(1) 2.05(0.73) 2.711(0.66) Trembathite (Mg,Fe++)3B7O13Cl 3.029(1) 2.78(0.9) 3.082(0.9) Irtyshite Na2(Ta,Nb)4O11 3.03(1) 1.51(0.8) 1.918(0.7) Cooperite (Pt,Pd,Ni)S 3.03(1) 1.854(0.8) 1.591(0.6) Chalcopyrite CuFeS2 3.03(1) 1.854(0.8) 1.591(0.6) Kharaelakhite (Pt,Cu,Pb,Fe,Ni)9S8 3.03(1) 1.858(0.9) 2.628(0.8) Natrobistantite (Na,Cs)Bi(Ta,Nb,Sb)4O12 3.03(1) 2.1(0.9) 2.93(0.6) Kostovite CuAuTe4 3.03(1) 2.11(0.7) 2.94(0.6) Krennerite AuTe2 3.03(1) 2.11(0.8) 2.94(0.5) Muthmannite (Ag,Au)Te 3.03(1) 2.23(0.6) 1.404(0.4) Paraguanajuatite Bi2(Se,S)3 3.03(1) 2.29(0.33) 1.749(0.3) Carlinite Tl2S 3.03(1) 2.311(0.25) 1.898(0.16) Nitratine NaNO3 3.03(1) 2.46(0.7) 3.55(0.7) Fenaksite (K,Na,Ca)4(Fe++,Fe+++,Mn)2Si8O20(OH,F) 3.03(1) 2.47(0.7) 2.8(0.7) Billingsleyite Ag7AsS6 3.03(1) 2.83(0.7) 4.37(0.7) Brockite (Ca,Th,Ce)(PO4)·(H2O) 3.03(1) 2.88(0.9) 3.35(0.6) Finnemanite Pb5(As+++O3)3Cl 3.03(1) 2.96(0.6) 2.92(0.5) Hedyphane Ca2Pb3(AsO4)3Cl 3.03(1) 2.969(0.7) 2.935(0.6) Morelandite (Ba,Ca,Pb)5(AsO4,PO4)3Cl 3.03(1) 3(0.9) 2.68(0.8) Miharaite PbCu4FeBiS6 3.03(1) 3.127(0.88) 3.236(0.84) Sazykinaite-(Y) Na5YZrSi6018·6(H2O) 3.03(1) 3.23(0.8) 3.35(0.8) Clinoferrosilite (Fe++,Mg)2Si2O6 3.03(1) 3.25(0.75) 3.36(0.75) Kerstenite * PbSeO4 (?) 3.03(1) 3.44(1) 3.78(0.9) Marialite Na4Al3Si9O24Cl 3.03(1) 3.56(0.8) 5.84(0.7) Arsenogoyazite (Sr,Ca,Ba)Al3(AsO4,PO4)2(OH,F)5·(H2O) 3.03(1) 5.86(0.65) 2.237(0.55) Corkite PbFe+++3(PO4)(SO4)(OH)6 3.03(1) 6.04(0.8) 3.18(0.65) Bariomicrolite Ba(Ta,Nb)2(O,OH)7 3.03(1) 7.59(0.7) 2.286(0.25) Inyoite Ca2B6O6(OH)10·8(H2O) 3.032(1) 3.51(1) 8.79(0.8) IMA1996-002 [Ca0.75(H3O)0.25](UO2)3(SeO3)2(OH)3.75·2.5(H2O) 3.032(1) 3.51(1) 8.79(0.8) Piretite Ca(UO2)3(SeO3)2(OH)4-4(H2O) 3.032(1) 3.619(0.8) 2.595(0.6) Parafransoletite Ca3Be2(PO4)2(PO3,OH)2·4(H2O) 3.035(1) 2.095(0.18) 2.285(0.18) Calcite CaCO3 3.036(1) 1.757(0.8) 5.29(0.7) Zajacite-(Ce) Na(REExCa1-x)(REEyCa1-y)F6 where (x ne y) 3.036(1) 3.015(0.7) 2.894(0.6) Natron Na2CO3·10(H2O) 3.036(1) 3.343(0.6) 7.223(0.5) Choloalite CuPb(Te++++O3)2 3.037(1) 3.076(0.9) 3.561(0.9) Reedmergnerite NaBSi3O8 3.038(1) 2.543(0.75) 2.979(0.75) Jervisite (Na,Ca,Fe++)(Sc,Mg,Fe++)Si2O6 3.038(1) 2.964(0.91) 4.835(0.91) Rynersonite Ca(Ta,Nb)2O6 3.038(1) 5.85(0.9) 3.59(0.4) Gallobeudantite ! PbGa3[(AsO4),(SO4)]2(OH)6 3.039(1) 5.32(0.8) 2.723(0.6) Fianelite Mn++2V+++++(V+++++,As+++++)O7·2(H2O) 3.04(1) 2.096(0.8) 1.298(0.7) Babkinite Pb2Bi2(S,Se)3 3.04(1) 2.14(0.8) 2.82(0.8) Grayite (Th,Pb,Ca)PO4·(H2O) 3.04(1) 2.682(0.9) 2.713(0.8) Collinsite Ca2(Mg,Fe++)(PO4)2·2(H2O) 3.04(1) 2.72(0.8) 3.68(0.7) Quenselite PbMn+++O2(OH) 3.04(1) 2.924(0.83) 7.625(0.78) Mrazekite Bi+++2Cu++3(PO4)2O2(OH)2·2(H2O) 3.04(1) 3.17(1) 3.29(0.7) Sarkinite Mn++2(AsO4)(OH) 3.04(1) 3.172(0.65) 6.18(0.5) Parabariomicrolite BaTa4O10(OH)2·2H20 3.04(1) 3.18(0.7) 2.976(0.5) Oboyerite Pb6H6(Te++++O3)3(Te++++++O6)2·2(H2O) 3.04(1) 3.35(0.89) 5.41(0.66) Studenitsite NaCa2[B9O14(OH)4]·2(H2O) 3.04(1) 3.67(1) 2.458(0.75) Peprossiite-(Ce) (Ce,La)Al2(BO3)3 3.04(1) 4.29(0.9) 3.17(0.8) Cornetite Cu3(PO4)(OH)3 3.04(1) 9.6(1) 4.3(0.8) Sampleite NaCaCu5(PO4)4Cl·5(H2O) 3.041(1) 3.462(0.66) 3.086(0.54) Newberyite Mg(PO3OH)·3(H2O) 3.042(1) 2.714(0.85) 3.222(0.45) Arrojadite KNa4CaMn++4Fe++10Al(PO4)12(OH,F)2 3.043(1) 1.879(0.9) 1.598(0.7) Talnakhite Cu9(Fe,Ni)8S16 3.044(1) 1.864(0.38) 2.637(0.37) Avicennite Tl2O3 3.044(1) 3.47(0.9) 3.32(0.7) Fransoletite H2Ca3Be2(PO4)4·4(H2O) 3.044(1) 6.09(0.8) 1.864(0.7) Bariopyrochlore (Ba,Sr)(Nb,Ti)2(O,OH)7 3.044(1) 8.222(0.61) 2.741(0.53) Ferri-clinoholmquistite ! [ ]Li2Mg3(Fe3+)2(Si8O22)(OH)2 3.045(1) 2.273(0.52) 6.83(0.36) Yttrotungstite-(Ce) ! (Ce,Nd,Y)W2O6(OH)3 3.045(1) 3.285(0.9) 4.99(0.5) Tavorite LiFe+++(PO4)(OH) 3.046(1) 1.855(0.9) 1.592(0.7) Luzonite Cu3AsS4 3.046(1) 4.385(0.9) 6.377(0.9) Nyerereite Na2Ca(CO3)2 3.048(1) 2.573(0.43) 3.025(0.43) Johannsenite CaMnSi2O6 3.049(1) 2.835(0.84) 8.22(0.71) Altisite Na3K6Ti2Al2Si8O26Cl3 3.049(1) 3.762(0.21) 1.527(0.15) Fersmite (Ca,Ce,Na)(Nb,Ta,Ti)2(O,OH,F)6 3.049(1) 5.418(0.92) 2.709(0.89) Melonjosephite CaFe++Fe+++(PO4)2(OH) 3.05(1) 1.589(0.8) 1.866(0.8) Stannomicrolite (Sn++,Fe++,Mn++)(Ta,Nb,Sn++++)2(O,OH)7 3.05(1) 1.862(0.7) 2.64(0.5) Freibergite (Ag,Cu,Fe)12(Sb,As)4S13 3.05(1) 1.868(0.9) 1.593(0.7) Giraudite (Cu,Zn,Ag)12(As,Sb)4(Se,S)13 3.05(1) 1.87(0.5) 2.64(0.4) Germanocolusite Cu13V(Ge,As)3S16 3.05(1) 1.874(0.9) 1.597(0.6) Putoranite Cu1.1Fe1.2S2 3.05(1) 2.08(0.67) 2.87(0.66) Bobfergusonite Na2Mn++5Fe+++Al(PO4)6 3.05(1) 2.09(0.9) 2.24(0.9) Kotulskite Pd(Te,Bi) 3.05(1) 2.093(0.8) 2.219(0.8) Paradocrasite Sb2(Sb,As)2 3.05(1) 2.14(0.5) 2.25(0.3) Sylvanite (Au,Ag)2Te4 3.05(1) 2.7(0.6) 3.08(0.4) Argyrodite Ag8GeS6 3.05(1) 2.72(0.9) 3.22(0.7) Dickinsonite KNa4Ca(Mn++,Fe++)14Al(PO4)12(OH)2 3.05(1) 2.8(0.75) 2.84(0.7) Chursinite Hg+Hg++(AsO4) 3.05(1) 2.867(0.61) 2.568(0.39) Bearthite Ca2Al(PO4)2(OH) 3.05(1) 2.914(0.8) 2.865(0.5) Grumiplucite ! HgBi2S4 3.05(1) 2.99(0.9) 2.74(0.75) IMA1998-055 ! Sr4ZrTi4Si4O22 3.05(1) 3.23(0.9) 3.13(0.7) Emplectite CuBiS2 3.05(1) 3.24(0.9) 4.24(0.8) Bruggenite Ca(IO3)2·(H2O) 3.05(1) 3.24(0.6) 8.26(0.55) Anthophyllite (Mg,Fe++)2(Mg,Fe++)5Si8O22(OH)2 3.05(1) 3.406(1) 4(1) Calciouranoite (Ca,Ba,Pb)U2O7·5(H2O) 3.05(1) 3.43(1) 2.79(0.7) Weilite CaHAsO4 3.05(1) 4.26(1) 6.6(0.9) Armstrongite CaZrSi6O15·3(H2O) 3.05(1) 8.27(0.9) 2.687(0.3) Ferroglaucophane [ ]Na2(Fe++3Al2)Si8O22(OH)2 3.052(1) 3.07(1) 4.195(1) Anthoinite AlWO3(OH)3 3.053(1) 2.687(0.2) 3.561(0.15) Mosandrite * Na(Na,Ca)2(Ca,Ce,Y)4(Ti,Nb,Zr)(Si2O7)2(O,F)2F3 3.053(1) 5.25(0.8) 2.954(0.7) Hanawaltite Hg+6Hg++[Cl,(OH)]2O3 3.054(1) 1.56(0.32) 1.899(0.32) Paraniite-(Y) Ca2Y(AsO4)(WO4)2 3.054(1) 1.593(0.7) 1.869(0.7) Cesplumtantite (Cs,Na,Ca)2(Pb,Sb+++,Sn)3Ta8O24 3.054(1) 1.765(0.8) 2.842(0.8) Girdite Pb3H2(Te++++O3)(Te++++++O6) 3.054(1) 1.87(0.7) 1.595(0.4) Germanite Cu26Fe4Ge4S32 3.055(1) 3.122(0.8) 3.288(0.6) Andremeyerite BaFe(Fe++,Mn,Mg)Si2O7 3.055(1) 3.489(0.9) 6.27(0.8) Xanthoxenite Ca4Fe+++2(PO4)4(OH)2·3(H2O) 3.056(1) 2.699(0.6) 2.749(0.54) Sodic-ferripedrizite Na(LiNa)(Fe+++2Mg2Li)Si8O22(OH,F)2 3.056(1) 3.104(0.7) 3.286(0.7) Bertossaite Li2CaAl4(PO4)4(OH)4 3.056(1) 5.82(0.9) 4.68(0.85) Yugawaralite CaAl2Si6O16·4(H2O) 3.056(1) 6.56(0.77) 6.91(0.55) Blatonite ! UO2CO3·(H2O) 3.058(1) 2.23(0.8) 2.639(0.75) Norbergite Mg3(SiO4)(F,OH)2 3.058(1) 2.657(0.7) 3.032(0.6) Samuelsonite (Ca,Ba)Ca8(Fe++,Mn)4Al2(PO4)10(OH)2 3.058(1) 2.815(0.62) 1.518(0.55) Fersmanite (Ca,Na)4(Ti,Nb)2Si2O11(F,OH)2 3.059(1) 1.876(0.7) 1.602(0.5) Isocubanite CuFe2S3 3.06(1) 1.854(0.7) 2.91(0.7) Cervantite Sb+++Sb+++++O4 3.06(1) 1.869(0.8) 1.595(0.4) Argentotennantite (Ag,Cu)10(Zn,Fe)2(As,Sb)4S13 3.06(1) 1.87(0.8) 1.595(0.6) Renierite (Cu,Zn)11(Ge,As)2Fe4S16 3.06(1) 1.87(0.5) 1.89(0.5) Briartite Cu2(Zn,Fe)GeS4 3.06(1) 2.115(0.5) 3.35(0.4) Saddlebackite Pb2Bi2Te2S3 3.06(1) 2.13(0.3) 2.95(0.3) Alforsite Ba5(PO4)3Cl 3.06(1) 2.165(0.7) 3.54(0.3) Clausthalite PbSe 3.06(1) 2.24(0.4) 3.59(0.4) Nevskite Bi(Se,S) 3.06(1) 2.608(0.9) 5.44(0.8) Canaphite CaNa2P2O7·4(H2O) 3.06(1) 2.84(0.9) 4.6(0.3) Lengenbachite Pb6(Ag,Cu)2As4S13 3.06(1) 2.85(0.75) 3.26(0.7) Brabantite CaTh(PO4)2 3.06(1) 3.01(0.95) 2.96(0.65) Clinomimetite Pb5(AsO4)3Cl 3.06(1) 3.01(0.95) 2.96(0.65) Mimetite Pb5(AsO4)3Cl 3.06(1) 3.09(1) 3.6(1) Ziesite Cu2V+++++2O7 3.06(1) 3.32(1) 2.73(0.6) Tungstibite Sb2O3·WO3 3.06(1) 3.53(0.9) 3.38(0.8) Ganomalite Pb9Ca5Mn++Si9O33 3.06(1) 3.63(0.74) 3.21(0.54) Paderaite AgPb2Cu6Bi11S22 3.06(1) 3.71(0.65) 3.28(0.55) Allactite Mn7(AsO4)2(OH)8 3.06(1) 4.28(0.74) 4.46(0.65) Bernardite Tl(As,Sb)5S8 3.06(1) 4.62(0.9) 2.48(0.4) Pottsite PbBiH(VO4)2·2(H2O) 3.06(1) 4.87(0.6) 3.51(0.55) Rowlandite-(Y) Y4Fe++Si4O14F2 (?) 3.06(1) 5.98(0.5) 3.68(0.3) Argentojarosite AgFe+++3(SO4)2(OH)6 3.06(1) 6.159(0.9) 4.326(0.8) Mccrillisite NaCs(Be,Li)Zr2(PO4)4·1-2(H2O) 3.06(1) 8.27(0.8) 3.27(0.7) Gedrite [ ]Mg5Al2Si6Al2O22(OH)2 3.061(1) 2.585(0.7) 2.841(0.6) Goedkenite (Sr,Ca)2Al(PO4)2(OH) 3.062(1) 2.585(0.9) 3.442(0.6) Trabzonite Ca4Si3O10·2(H2O) 3.062(1) 2.943(0.35) 3.259(0.3) Cuspidine Ca4Si2O7(F,OH)2 3.064(1) 1.876(0.7) 1.611(0.6) Gallite CuGaS2 3.064(1) 2.95(0.9) 5.91(0.9) Alacranite As8S9 3.064(1) 3.348(0.8) 4.654(0.8) Rajite CuTe++++2O5 3.065(1) 3.147(0.76) 2.548(0.29) Ameghinite NaB3O3(OH)4 3.066(1) 1.933(0.55) 2.546(0.12) Tetrarooseveltite BiAsO4 3.066(1) 2.242(0.7) 3.583(0.5) Nordstromite Pb3CuBi7(S10Se4) 3.066(1) 5.933(0.95) 1.829(0.7) Plumbojarosite PbFe+++6(SO4)4(OH)12 3.067(1) 2.946(0.31) 2.744(0.28) Massicot PbO 3.068(1) 3.623(0.92) 3.995(0.65) IMA1999-031 ! Na6(Mn,Fe++ )Al4Si8O26 3.068(1) 7.35(0.9) 10.29(0.8) Goldichite KFe+++(SO4)2·4(H2O) 3.069(1) 4.25(0.75) 4.015(0.7) Nepheline (Na,K)AlSiO4 3.07(1) 1.24(0.9) 1.91(0.8) Cuprotungstite Cu++3(WO4)2(OH)2 3.07(1) 1.843(0.7) 2.75(0.5) Hauerite MnS2 3.07(1) 1.88(0.8) 1.89(0.6) Haycockite Cu4Fe5S8 3.07(1) 1.89(0.8) 1.6(0.6) Mooihoekite Cu9Fe9S16 3.07(1) 2.08(0.6) 2.74(0.6) Chambersite Mn3B7O13Cl 3.07(1) 2.16(0.3) 2.18(0.3) Stistaite SnSb 3.07(1) 2.48(0.9) 3.93(0.4) Chalcothallite (Cu,Fe)6Tl2SbS4 3.07(1) 2.73(0.6) 3.25(0.4) Cuprobismutite Cu10Bi12S23 3.07(1) 2.86(0.9) 3.26(0.9) Cheralite-(Ce) (Ce,Ca,Th)(P,Si)O4 3.07(1) 3.1(1) 2.86(0.8) Thoreaulite Sn++Ta2O6 3.07(1) 3.26(0.84) 3.46(0.84) Lithosite K6Al4Si8O25·(H2O) 3.07(1) 3.31(1) 3.59(1) Polylithionite KLi2AlSi4O10(F,OH)2 3.07(1) 5.96(0.9) 3.67(0.6) Kintoreite PbFe+++3(PO4)2(OH,H2O)6 3.07(1) 6.16(0.85) 3.21(0.75) Kalipyrochlore (H2O,Sr)(Nb,Ti)(O,OH)6·(H2O,K) 3.071(1) 3.929(0.7) 2.558(0.4) Panunzite (K,Na)AlSiO4 3.071(1) 4.698(0.72) 3.279(0.69) Helmutwinklerite PbZn2(AsO4)2·2(H2O) 3.073(1) 5.9(0.9) 1.971(0.5) Springcreekite ! BaV+++3(PO4)2(OH,H2O)6 3.074(1) 2.09(0.8) 2.267(0.7) Skippenite Bi2Se2(Te,S) 3.074(1) 3.192(1) 2.706(0.4) Gabrielsonite PbFe++(AsO4)(OH) 3.075(1) 1.88(0.8) 1.6(0.6) Colusite Cu12-13V(As,Sb,Sn,Ge)3S16 3.075(1) 3.019(0.8) 2.843(0.5) Dervillite Ag2AsS2 3.076(1) 3.05(0.95) 2.558(0.45) Trikalsilite (K,Na)AlSiO4 3.077(1) 2.031(0.5) 2.955(0.5) Nacareniobsite-(Ce) NbNa3Ca3(Ce,La)(Si2O7)2OF3 3.077(1) 2.275(0.6) 2.5(0.6) Vergasovaite ! Cu3O[(Mo,S)O4][SO4] 3.077(1) 2.4(0.4) 3.121(0.3) Attakolite (Ca,Sr)Mn++(Al,Fe+++)4[(Si,P)O4]H(PO4)3(OH)4 3.077(1) 3.301(0.45) 2.697(0.25) Fresnoite Ba2TiSi2O8 3.078(1) 2.988(0.75) 2.96(0.4) Tarapacaite K2CrO4 3.078(1) 12.3(0.35) 6.158(0.25) Delhayelite (Na,K)10Ca5Al6Si32O80(Cl2,F2,SO4)3·18(H2O) 3.08(1) 1.641(0.8) 2.907(0.8) Canasite (Na,K)6Ca5Si12O30(OH,F)4 3.08(1) 1.888(0.8) 3.16(0.7) Polhemusite (Zn,Hg)S 3.08(1) 2.11(0.5) 2.24(0.5) Joseite Bi4(S,Te)3 3.08(1) 2.15(0.9) 2.8(0.6) Morozeviczite (Pb,Fe)3Ge1-xS4 3.08(1) 2.15(0.9) 2.8(0.6) Polkovicite (Fe,Pb)3(Ge,Fe)1-xS4 3.08(1) 2.58(0.9) 2.89(0.6) Stephanite Ag5SbS4 3.08(1) 2.78(0.9) 9.2(0.9) Hydroglauberite Na4Ca(SO4)3·2(H2O) 3.08(1) 2.79(0.9) 3.44(0.8) Kalborsite K6Al4Si6BO20(OH)4Cl 3.08(1) 2.82(0.9) 2.01(0.6) Tornebohmite-(Ce) (Ce,La,Nd)2Al(SiO4)2(OH) 3.08(1) 2.938(0.7) 4.26(0.6) Megacyclite K2Na16Si18O36(OH)18·32(H2O) 3.08(1) 3.11(0.6) 2.292(0.5) Jarosite KFe+++3(SO4)2(OH)6 3.08(1) 3.2(0.9) 2.84(0.6) Orickite CuFeS2·(H2O) 3.08(1) 3.28(0.6) 2.846(0.5) Monazite-(Nd) (Nd,Ce,La,Pr,Sm,Gd)(P,Si)O4 3.08(1) 3.58(1) 4.2(1) Dalyite K2ZrSi6O15 3.08(1) 3.67(0.8) 4.03(0.6) Douglasite K2Fe++Cl4·2(H2O) 3.08(1) 3.92(0.4) 2.536(0.3) Benstonite (Ba,Sr)6(Ca,Mn)6Mg(CO3)13 3.08(1) 5.99(0.8) 3.67(0.7) Beudantite PbFe+++3(AsO4)(SO4)(OH)6 3.08(1) 6.161(0.9) 3.231(0.4) IMA2000-001 ! Cu2Fe+++(AsO4)[As+++O2(OH)2]·H2O 3.0806(1) 8.2773(0.808) 3.2614(0.74) Paulingite-Ca ! (Ca,K,Na,Ba)5[Al10Si35O84]·34(H2O) 3.0806(1) 8.2773(0.808) 3.2614(0.74) Paulingite-K ! (K2,Ca,Na2,Ba)5Al10Si35O90·45(H2O) 3.085(1) 2.828(0.5) 2.697(0.4) Xonotlite Ca6Si6O17(OH)2 3.087(1) 5.6(0.6) 3.336(0.53) Kostylevite K2ZrSi3O9·(H2O) 3.088(1) 1.895(0.9) 1.614(0.7) Vinciennite Cu10Fe4Sn(As,Sb)S16 3.088(1) 3.4(0.7) 1.991(0.4) Wolsendorfite (Pb,Ba,Ca)U2O7·2(H2O) 3.089(1) 1.991(0.7) 2.706(0.7) Sabatierite Cu4TlSe3 3.089(1) 4.36(0.64) 3.129(0.6) Palermoite (Sr,Ca)(Li,Na)2Al4(PO4)4(OH)4 3.09(1) 1.283(0.67) 1.676(0.67) Metacalciouranoite (Ca,Na,Ba)U2O7·2(H2O) 3.09(1) 1.623(0.23) 2.078(0.2) Grattarolaite Fe+++O3(PO4) 3.09(1) 1.894(0.8) 1.617(0.6) Nekrasovite Cu+18(Cu++,Fe,Zn)8(V,Fe)2(Sn,As,Sb)6S32 3.09(1) 1.895(0.8) 1.618(0.6) Mawsonite Cu+6Fe+++2Sn++++S8 3.09(1) 2.12(0.6) 2.25(0.4) Aleksite PbBi2Te2S2 (?) 3.09(1) 2.21(0.5) 2.33(0.3) Volynskite AgBiTe2 3.09(1) 2.593(0.3) 2.131(0.25) Kaliophilite KAlSiO4 3.09(1) 2.681(0.7) 8.81(0.7) Bjarebyite (Ba,Sr)(Mn++,Fe++,Mg)2Al2(PO4)3(OH)3 3.09(1) 2.78(0.7) 3.04(0.7) Mendipite Pb3Cl2O2 3.09(1) 2.82(0.7) 4.6(0.7) Tornebohmite-(La) (La,Ce)2Al(SiO4)2(OH) 3.09(1) 2.89(0.9) 4.23(0.75) Huttonite ThSiO4 3.09(1) 3.16(1) 5.7(0.6) Ammonioborite (NH4)2B10O16·5(H2O) 3.09(1) 3.41(0.7) 1.98(0.6) Bauranoite BaU2O7·4-5(H2O) 3.09(1) 4.32(1) 2.71(0.9) Pharmacolite CaHAsO4·2(H2O) 3.09(1) 4.4(0.74) 6.59(0.66) Krausite KFe+++(SO4)2·(H2O) 3.09(1) 4.5(0.46) 2.255(0.38) Baksanite ! Bi6Te2S3 3.09(1) 8.23(1) 3.22(0.8) Marthozite Cu(UO2)3(SeO3)3(OH)2·7(H2O) 3.091(1) 1.878(0.8) 3.175(0.6) Fettelite Ag24HgAs5S20 3.092(1) 3.304(0.93) 6.81(0.67) Coquandite Sb6O8(SO4)·(H2O) 3.092(1) 5.966(0.5) 3.678(0.4) Segnitite PbFe+++3H(AsO4)2(OH)6 3.093(1) 3.087(0.69) 3.18(0.55) Uricite C5H4N4O3 3.093(1) 3.167(1) 1.659(0.7) Howardevansite NaCu++Fe+++2(VO4)3 3.094(1) 2.915(0.8) 2.649(0.7) Penikisite BaMg2Al2(PO4)3(OH)3 3.095(1) 3.082(0.95) 3.12(0.3) Clinobisvanite BiVO4 3.096(1) 1.778(0.9) 2.334(0.7) Orebroite-III Mn++6(Fe+++,Sb+++++)2Si2(O,OH)14 3.096(1) 1.778(0.9) 2.334(0.7) Orebroite-VIII Mn++3(Sb+++++,Fe+++)SiO4(O,OH)3 3.096(1) 3.164(0.5) 3.955(0.5) Georgiadesite Pb4(AsO3)Cl4(OH) 3.097(1) 4.65(0.7) 9.28(0.7) IMA1996-001 ! Cu5(Te++++++O4)2(AsO4)2·2(H2O) 3.097(1) 4.65(0.7) 9.28(0.7) Juabite ! (Ca,Fe++)Cu10(Te++++O3)4(As+++++O4)4(OH)2·4(H2O) 3.098(1) 3.432(0.5) 2.77(0.15) Coesite SiO2 3.098(1) 8.366(0.92) 2.548(0.58) Protomangano-ferro-anthophyllite ! (Mn++,Fe++)2(Fe++,Mg)5(Si4O11)2(OH)2 3.1(1) 1.882(0.9) 1.631(0.5) Fergusonite-(Ce) * (Ce,La,Y)NbO4 3.1(1) 1.892(0.9) 1.614(0.7) Stibiocolusite Cu13V(Sb,As,Sn)3S16 3.1(1) 1.903(0.8) 1.61(0.6) Lautite CuAsS 3.1(1) 1.92(0.8) 1.89(0.7) Barquillite ! Cu2CdGeS4 3.1(1) 1.929(0.3) 4.76(0.25) Powellite CaMoO4 3.1(1) 2.71(0.8) 3.4(0.7) Eckermannite NaNa2(Mg4Al)Si8O22(OH)2 3.1(1) 2.81(0.4) 2.75(0.3) Thalenite-(Y) Y3Si3O10(OH) 3.1(1) 3.028(0.9) 1.76(0.6) Changbaiite PbNb2O6 3.1(1) 4.25(0.9) 4.42(0.8) Sanderite MgSO4·2(H2O) 3.1(1) 4.76(0.55) 3.072(0.3) Scheelite CaWO4 3.1(1) 5.1(0.6) 1.99(0.4) Ammoniojarosite (NH4)Fe+++3(SO4)2(OH)6 3.102(1) 2.715(0.8) 3.62(0.8) Hodrushite Cu8Bi12S22 3.104(1) 2.486(0.7) 1.672(0.3) IMA1998-012 Cu3(OH)2(As2O7) 3.104(1) 3.466(0.6) 1.542(0.5) Coronadite Pb(Mn++++,Mn++)8O16 3.104(1) 6.6(0.86) 3.288(0.75) Hemimorphite Zn4Si2O7(OH)2·(H2O) 3.105(1) 2.748(0.9) 4.469(0.9) IMA2000-011 ! KCaCu5(AsO4)4[As(OH)2O2]2·H2O 3.108(1) 1.902(0.65) 1.6233(0.35) Famatinite Cu3SbS4 3.108(1) 2.927(0.8) 3.044(0.7) Kulanite Ba(Fe++,Mn,Mg)2Al2(PO4)3(OH)3 3.109(1) 2.248(0.7) 1.368(0.67) Antimony Sb 3.11(1) 1.906(0.7) 1.621(0.2) Stannoidite Cu8Fe3Sn2S12 3.11(1) 1.919(0.5) 1.858(0.3) Hemusite Cu6SnMoS8 3.11(1) 2.236(0.6) 2.85(0.6) Bakerite Ca4B4(BO4)(SiO4)3(OH)3·(H2O) 3.11(1) 2.28(0.6) 2.13(0.5) Ingodite Bi(S,Te) 3.11(1) 2.4(0.6) 1.62(0.5) Argutite GeO2 3.11(1) 3.05(0.5) 3.25(0.5) Walpurgite Bi4(UO2)(AsO4)2O4·2(H2O) 3.11(1) 3.13(1) 2.93(0.45) Thortveitite (Sc,Y)2Si2O7 3.11(1) 3.7(0.9) 2.6(0.7) Burckhardtite Pb2(Fe+++,Mn+++)Te++++(AlSi3O10)O2(OH)2·(H2O) 3.11(1) 4.99(1) 5.85(0.6) Parabutlerite Fe+++(SO4)(OH)·2(H2O) 3.11(1) 6.06(0.9) 1.843(0.8) Arsenobismite ? Bi2(AsO4)(OH)3 3.11(1) 15.56(0.9) 2.665(0.7) Shkatulkalite ! Na10Mn++Ti3Nb3(Si2O7)6(OH)2F·12(H2O) 3.112(1) 5.947(0.87) 3.666(0.34) Dorallcharite (Tl,K)Fe+++3(SO4)2(OH)6 3.113(1) 3.331(0.45) 4.05(0.45) Rhomboclase (H5O2)+Fe+++(SO4)2·2(H2O) 3.113(1) 3.512(0.9) 7.01(0.8) Sayrite Pb2(UO2)5O6(OH)2·4(H2O) 3.114(1) 2.855(0.65) 2.189(0.6) Datolite CaBSiO4(OH) 3.114(1) 4.383(0.85) 5.509(0.6) Strengite Fe+++PO4·2(H2O) 3.115(1) 2.809(0.62) 1.872(0.37) Litharge PbO 3.117(1) 1.84(0.8) 2.722(0.5) Scrutinyite PbO2 3.118(1) 3.09(0.95) 9.4(0.8) Chaidamuite (Zn,Fe++)Fe+++(SO4)2(OH)·4(H2O) 3.119(1) 3.66(0.8) 2.518(0.75) Phenakite Be2SiO4 3.12(1) 1.904(0.9) 2.73(0.8) Kalistrontite K2Sr(SO4)2 3.12(1) 1.909(0.54) 1.627(0.4) Aktashite Cu6Hg3As4S12 3.12(1) 1.915(0.55) 1.633(0.3) Nantokite CuCl 3.12(1) 2.253(0.8) 2.828(0.8) Fluorthalenite-(Y) ! Y3Si3O10F 3.12(1) 2.31(0.5) 4.92(0.4) Kawazulite Bi2(Te,Se,S)3 3.12(1) 2.58(0.5) 3.97(0.45) Kalsilite KAlSiO4 3.12(1) 2.87(0.7) 2.52(0.3) Tanteuxenite-(Y) (Y,Ce,Ca)(Ta,Nb,Ti)2(O,OH)6 3.12(1) 2.955(0.95) 1.9(0.75) Fergusonite-beta-(Y) YNbO4 3.12(1) 2.96(0.9) 1.901(0.5) Fergusonite-(Y) YNbO4 3.12(1) 3.31(0.85) 2.15(0.4) Monazite-(La) (La,Ce,Nd)PO4 3.12(1) 3.88(0.7) 4.36(0.7) Kvanefjeldite Na4(Ca,Mn)Si6O14(OH)2 3.12(1) 5.93(0.6) 2.58(0.5) Rhodostannite Cu2FeSn3S8 3.12(1) 6.46(0.73) 5.95(0.7) Georgechaoite KNaZrSi3O9·2(H2O) 3.12(1) 8.2(0.75) 2.798(0.4) Magnesio-arfvedsonite NaNa2(Mg4Fe++)Si8O22(OH)2 3.12(1) 8.38(1) 2.71(0.9) Tremolite [ ]Ca2Mg5Si8O22(OH)2 3.12(1) 8.43(0.8) 3.267(0.4) Edenite NaCa2Mg5Si7AlO22(OH)2 3.12(1) 9.1(0.9) 4.6(0.7) Lanthanite-(La) (La,Ce)2(CO3)3·8(H2O) 3.12(1) 22(1) 11(0.8) Gyrolite NaCa16Si23AlO60(OH)8·64(H2O) 3.122(1) 7.12(0.8) 3.55(0.6) Richetite PbU++++++4O13·4(H2O) 3.122(1) 8.399(0.56) 2.798(0.48) Leakeite NaNa2(Mg2Fe+++2Li)Si8O22(OH)2 3.123(1) 1.912(0.51) 1.633(0.3) Sphalerite (Zn,Fe)S 3.123(1) 2.162(0.4) 2.804(0.3) Paulkellerite Bi2Fe+++(PO4)O2(OH)2 3.123(1) 3.723(1) 2.641(0.8) Magnesium-chlorophoenicite (Mg,Mn)3Zn2(AsO4)(OH,O)6 3.124(1) 1.913(0.51) 1.632(0.44) Cerianite-(Ce) (Ce++++,Th)O2 3.124(1) 5.84(0.8) 5.93(0.8) Gaidonnayite Na2ZrSi3O9·2(H2O) 3.124(1) 8.43(0.4) 3.269(0.35) Pargasite NaCa2(Mg,Fe++)4Al(Si6Al2)O22(OH)2 3.125(1) 3.14(0.9) 4.018(0.4) Barytocalcite BaCa(CO3)2 3.125(1) 8.4(0.57) 3.271(0.48) IMA2000-049 ! NaCa2Mg5(Si7Al)O22F2 3.128(1) 1.918(0.5) 1.637(0.3) Geerite Cu8S5 3.128(1) 7.08(1) 3.485(0.8) Agrinierite (K2,Ca,Sr)U3O10·4(H2O) 3.13(1) 1.106(0.6) 1.915(0.6) Petrukite (Cu,Fe,Zn)2(Sn,In)S4 3.13(1) 1.822(0.8) 3.25(0.8) Phyllotungstite CaFe+++3H(WO4)6·10(H2O) 3.13(1) 1.914(0.8) 1.64(0.6) Kuramite Cu3SnS4 3.13(1) 1.919(0.6) 1.11(0.4) Ferrokesterite Cu2(Fe,Zn)SnS4 3.13(1) 1.92(0.7) 2.72(0.2) Mohite Cu2SnS3 3.13(1) 2.66(0.8) 6.22(0.8) Glauberite Na2Ca(SO4)2 3.13(1) 2.88(0.6) 3.64(0.5) Alumotantite AlTaO4 3.13(1) 2.947(0.3) 1.735(0.2) Stibiocolumbite SbNbO4 3.13(1) 2.96(0.6) 3.55(0.6) Stibiotantalite SbTaO4 3.13(1) 3.299(1) 6.589(0.75) Montesommaite (K,Na)9Al9Si23O64·10(H2O) 3.13(1) 3.85(0.5) 5.64(0.5) Colemanite Ca2B6O11·5(H2O) 3.13(1) 6.26(1) 10.29(0.9) Benyacarite (H2O,K)2Ti(Mn++,Fe++)2(Fe+++,Ti)2Ti(PO4)4(O,F)2·14(H2O) 3.13(1) 8.45(0.8) 8.54(0.8) Cordierite Mg2Al4Si5O18 3.131(1) 3.892(0.8) 6.22(0.8) Klebelsbergite Sb+++4O4(OH)2(SO4) 3.132(1) 2.3293(0.4) 3.713(0.3) Dussertite BaFe+++3(AsO4)2(OH)5 3.133(1) 3.163(0.76) 1.685(0.49) Leiteite ZnAs+++2O4 3.134(1) 1.9145(0.3) 1.9288(0.25) Stannite Cu2FeSnS4 3.134(1) 1.917(0.5) 1.644(0.1) Silicon Si 3.134(1) 2.788(0.8) 2.506(0.6) Stranskiite Zn2Cu++(AsO4)2 3.134(1) 2.818(0.8) 1.887(0.65) Idaite Cu5FeS6 3.135(1) 2.866(0.7) 3.72(0.6) Anapaite Ca2Fe++(PO4)2·4(H2O) 3.135(1) 2.868(0.45) 3.433(0.35) Hydroxylherderite CaBe(PO4)(OH) 3.136(1) 3.288(1) 4.96(0.9) Lovdarite K2Na6Be4Si14O36·9(H2O) 3.137(1) 2.841(0.37) 3.645(0.3) Krupkaite PbCuBi3S6 3.14(1) 1.24(0.9) 1.76(0.9) Palmierite (K,Na)2Pb(SO4)2 3.14(1) 1.63(0.5) 2.41(0.5) Pyrolusite MnO2 3.14(1) 1.641(0.8) 2.377(0.65) Miserite K(Ca,Ce)5[Si8O22](OH,F)2 3.14(1) 1.925(0.9) 1.639(0.8) Hakite (Cu,Hg)3(Sb,As)(Se,S)3 3.14(1) 2.52(0.9) 2.87(0.9) Emmonsite Fe+++2Te++++3O9·2(H2O) 3.14(1) 2.65(0.35) 4.05(0.25) Langbeinite K2Mg2(SO4)3 3.14(1) 2.86(0.8) 2.2(0.7) Herderite CaBe(PO4)F 3.14(1) 3(0.9) 1.762(0.5) Chalcostibite CuSbS2 3.14(1) 3.025(0.4) 3.622(0.3) Pekoite PbCuBi11(S,Se)18 3.14(1) 3.21(0.7) 2.93(0.6) Bayldonite (Cu,Zn)3Pb(AsO4)2(OH)2 3.14(1) 3.29(1) 3.15(0.94) Chekhovichite (Bi,Pb,Fe)2Te4O11 3.14(1) 5.14(0.9) 4.2(0.8) Mroseite CaTe++++(CO3)O2 3.14(1) 7.06(0.5) 3.58(0.35) Protasite Ba(UO2)3O3(OH)2·3(H2O) 3.14(1) 8.11(1) 2.705(0.8) Aenigmatite Na2Fe++5TiSi6O20 3.14(1) 8.45(0.95) 2.344(0.7) Potassicpargasite ! (K,Na)Ca2(Mg,Fe++)5Si8O22(OH,F)2 3.14(1) 8.51(0.55) 2.72(0.35) Magnesiohornblende Ca2[Mg4(Al,Fe+++)]Si7AlO22(OH)2 3.141(1) 2.84(0.8) 4.21(0.7) Truscottite (Ca,Mn++)14Si24O58(OH)8·2(H2O) 3.142(1) 3.118(0.75) 3.494(0.25) Valentinite Sb2O3 3.143(1) 2.826(0.7) 1.891(0.6) Nukundamite (Cu,Fe)4S4 3.143(1) 3.101(0.98) 2.412(0.73) Hollandite Ba(Mn++++,Mn++)8O16 3.144(1) 9.46(0.35) 4.998(0.27) Guildite CuFe+++(SO4)2(OH)·4(H2O) 3.145(1) 8.44(0.9) 2.722(0.52) Potassicferrisadanagaite ! (K,Na)Ca2(Fe++,Mg)2(Fe+++,Al)2[Si5Al3O22](OH,F,O)2 3.146(1) 2.841(0.8) 2.694(0.2) Pingguite Bi+++6Te++++2O13 3.146(1) 3.089(0.63) 5.18(0.53) Kristiansenite Ca2ScSn(Si2O7)(Si2O6OH) 3.148(1) 2.945(0.6) 3.555(0.3) Bismutotantalite Bi(Ta,Nb)O4 3.149(1) 3.174(1) 12.364(0.9) Sodium-komarovite * (Na,Ca,H)4Nb4Si4O12O8(OH,F)4·2(H2O) 3.149(1) 8.1(1) 2.696(0.8) Wilkinsonite Na2Fe++4Fe+++2Si6O20 3.15(1) 1.543(0.9) 2.56(0.9) Labuntsovite (K,Ba,Na)8(Ti,Nb)9[(Si,Al)4O12]4(O,OH)10·n(H2O) 3.15(1) 1.652(0.2) 2.741(0.18) Koechlinite Bi2MoO6 3.15(1) 1.91(0.4) 2.445(0.2) Lenaite AgFeS2 3.15(1) 1.927(0.4) 1.65(0.2) Sakuraiite (Cu,Zn,Fe,In,Sn)S 3.15(1) 1.93(0.7) 1.65(0.5) Kesterite Cu2(Zn,Fe)SnS4 3.15(1) 2.22(0.59) 1.82(0.23) Sylvite KCl 3.15(1) 2.29(0.7) 1.571(0.4) Protojoseite * Bi4TeS2 (?) 3.15(1) 2.617(0.9) 3.79(0.8) Hannebachite 2CaSO3·(H2O) 3.15(1) 2.69(0.8) 4.07(0.8) Wellsite ? (Ba,Ca,K2)Al2Si6O16·6(H2O) 3.15(1) 2.96(0.7) 4.82(0.4) Rooseveltite BiAsO4 3.15(1) 3.13(0.8) 2.409(0.8) Strontiomelane ! SrMn++++6Mn+++2O16 3.15(1) 3.22(0.6) 4.83(0.6) Cassedanneite Pb5(VO4)2(CrO4)2·(H2O) 3.15(1) 4.07(0.7) 2.668(0.5) Efremovite (NH4)2Mg2(SO4)3 3.15(1) 4.672(1) 3.413(0.9) Tancoite HNa2LiAl(PO4)2(OH) 3.15(1) 8.53(0.7) 2.73(0.5) Ferritaramite Na(CaNa)(Fe++,Mg)3Fe+++2[Si6Al2O22](OH)2 3.15(1) 8.53(0.7) 2.732(0.5) Taramite Na(CaNa)Fe++3AlFe+++[Si6Al2O22](OH)2 3.151(1) 2.738(0.29) 2.729(0.22) Russellite Bi2WO6 3.151(1) 3.375(0.7) 4.698(0.4) Leifite Na2(Si,Al,Be)7(O,OH,F)14 3.151(1) 4.521(0.6) 3.556(0.55) Linarite PbCu(SO4)(OH)2 3.151(1) 5.002(0.9) 12(0.9) Dufrenite Fe++Fe+++4(PO4)3(OH)5·2(H2O) 3.152(1) 2.997(0.7) 2.856(0.5) Angelellite Fe+++4(AsO4)2O3 3.152(1) 3.4(0.8) 12.04(0.8) Natrodufrenite Na(Fe+++,Fe++)(Fe+++,Al)5(PO4)4(OH)6·2(H2O) 3.152(1) 8.09(0.7) 2.992(0.65) Hureaulite Mn5(PO3OH)2(PO4)2·4(H2O) 3.155(1) 3.026(0.8) 3.232(0.8) Gittinsite CaZrSi2O7 3.156(1) 2.129(0.8) 2.348(0.7) Tellurantimony Sb2Te3 3.156(1) 2.705(0.6) 4.93(0.5) Garyansellite (Mg,Fe+++)3(PO4)2(OH,O)·1,5(H2O) 3.156(1) 3.355(0.77) 2.966(0.7) Gasparite-(Ce) CeAsO4 3.156(1) 3.428(0.85) 3.493(0.65) Lautarite Ca(IO3)2 3.156(1) 3.492(0.9) 2.997(0.8) Moctezumite Pb(UO2)(TeO3)2 3.156(1) 4.628(0.9) 4.822(0.9) Macquartite Pb3Cu(CrO4)(SiO3)(OH)4·2(H2O) 3.156(1) 4.996(0.7) 4.701(0.5) Kryzhanovskite MnFe+++2(PO4)2(OH)2·(H2O) 3.157(1) 1.934(0.49) 2.735(0.48) Uraninite UO2 3.157(1) 15.1(0.9) 3.001(0.7) Wawayandaite Ca12Mn4B2Be18Si12O46(OH,Cl)30 [Ortho·] 3.159(1) 2.519(0.81) 2.942(0.67) Cabalzarite Ca(Mg,Al,Fe++)2(AsO4)2(H2O,OH)2 3.159(1) 2.749(0.5) 2.983(0.5) Johntomaite ! Ba(Fe++,Ca,Mn++)2Fe+++2(PO4)3(OH)3 3.159(1) 2.874(0.6) 4.799(0.6) Hingganite-(Ce) (Ce,Y)2([ ],Fe++)Be2Si2O8(OH,O)2 3.159(1) 3.116(0.9) 3.084(0.8) Grandreefite Pb2SO4F2 3.16(1) 1.83(0.8) 3.87(0.7) Uranosphaerite Bi2U2O9·3(H2O) 3.16(1) 1.929(0.9) 1.645(0.8) Gruzdevite Cu6Hg3Sb4S12 3.16(1) 1.94(0.8) 1.66(0.6) Roquesite CuInS2 3.16(1) 2.17(0.5) 2.3(0.4) Joseite-B Bi4(S,Te)3 3.16(1) 2.32(0.6) 2.16(0.5) Sulphotsumoite Bi3Te2S 3.16(1) 2.52(0.7) 3.95(0.6) Daqingshanite-(Ce) (Sr,Ca,Ba)3(Ce,La)(PO4)(CO3)3-x(OH,F)x 3.16(1) 2.59(0.7) 4.13(0.7) Adelite CaMg(AsO4)(OH) 3.16(1) 2.715(0.63) 1.872(0.36) Edgarbaileyite Hg+6Si2O7 3.16(1) 2.75(0.5) 3.06(0.45) Wherryite Pb7Cu2(SO4)4(SiO4)2(OH)2 3.16(1) 2.826(0.8) 2.611(0.6) Baddeleyite ZrO2 3.16(1) 2.895(0.95) 4.07(0.85) Berezanskite ! KLi3Ti2Si12O30 3.16(1) 3.47(0.7) 2.81(0.5) Manganaxinite Ca2Mn++Al2BO3Si4O12(OH) 3.16(1) 3.58(0.75) 3.36(0.6) Greenockite CdS 3.16(1) 3.78(0.6) 1.92(0.5) Radhakrishnaite PbTe3(Cl,S)2 3.16(1) 4.382(0.8) 9.58(0.75) Mahlmoodite FeZr(PO4)2·4(H2O) 3.16(1) 5.73(0.7) 1.902(0.6) Sphaerobismoite Bi2O3 3.16(1) 6.07(0.55) 3.04(0.45) Trippkeite CuAs+++2O4 3.16(1) 6.31(0.28) 6.93(0.26) IMA1998-052 ! Na2K2Ba1-xTi4(Si4O12)2(O,OH)4·5H2O 3.16(1) 12.2(0.7) 1.783(0.47) Komarovite (Ca,Mn)2(Nb,Ti)2Si2O7(O,F)2·3.5(H2O) 3.16(1) 12.41(0.7) 2.723(0.6) Ehrleite Ca2ZnBe(PO4)2(PO3,OH)·4(H2O) 3.161(1) 2.732(0.8) 8.51(0.7) Arfvedsonite NaNa2(Fe++4Fe+++)Si8O22(OH)2 3.161(1) 3.584(1) 3.644(1) Friedrichite Pb5Cu5Bi7S18 3.162(1) 3.893(0.8) 3.96(0.65) Boggildite Sr2Na2Al2(PO4)F9 3.163(1) 2.974(0.7) 3.087(0.65) Mongolite Ca4Nb6Si5O24(OH)10·5(H2O) 3.163(1) 3.074(0.8) 3.398(0.8) Eudidymite NaBeSi3O7(OH) 3.164(1) 2.582(0.37) 2.445(0.36) Phosphovanadylite ! (Ba,Ca,K,Na)x[(V,Al)4P2(O,OH)16]·12(H2O) x~0.66 3.164(1) 2.934(0.9) 1.734(0.8) Bismutocolumbite Bi(Nb,Ta)O4 3.164(1) 3.633(0.8) 2.772(0.7) Paxite Cu2As3 3.164(1) 4.141(0.97) 1.97(0.38) Calomel Hg2Cl2 3.165(1) 1.938(0.8) 2.741(0.7) Winstanleyite TiTe++++3O8 3.166(1) 2.979(0.6) 3.104(0.53) Perloffite Ba(Mn,Fe++)2Fe+++2(PO4)3(OH)3 3.167(1) 1.939(0.7) 1.662(0.5) Cernyite Cu2CdSnS4 3.167(1) 2.818(0.6) 4.751(0.6) Embreyite Pb5(CrO4)2(PO4)2·(H2O) 3.167(1) 2.872(0.85) 2.494(0.5) Enstatite Mg2Si2O6 3.167(1) 3.082(0.9) 5.063(0.6) Carlfriesite CaTe++++2Te++++++O8 3.168(1) 1.922(0.47) 2.957(0.43) Apuanite Fe++Fe+++4Sb+++4O12S 3.169(1) 2.585(0.58) 6.95(0.56) IMA1998-051 ! Na4K4[Ba2(H2O,OH)2]Fe[Ti8(Si4O12)4(O,OH)8]·8H2O 3.17(1) 1.61(0.9) 3.32(0.8) Mackayite Fe+++Te2O5(OH) 3.17(1) 1.659(0.9) 2.45(0.9) Orthobrannerite U++++U++++++Ti4O12(OH)2 3.17(1) 1.695(0.85) 1.728(0.85) Thorutite (Th,U,Ca)Ti2(O,OH)6 3.17(1) 1.941(0.8) 1.671(0.4) IMA1996-052 Cu2HgSnS4 3.17(1) 1.941(0.8) 1.671(0.4) Velikite Cu2HgSnS4 3.17(1) 2.659(0.8) 2.855(0.8) Reyerite (Na,K)4Ca14Si22Al2O58(OH)8·6(H2O) 3.17(1) 3.01(0.6) 2.83(0.5) Larsenite PbZnSiO4 3.17(1) 3.099(0.35) 3.21(0.32) Plumbotellurite PbTe++++O3 3.17(1) 3.56(1) 7.64(0.9) Chapmanite Sb+++Fe+++2(SiO4)2(OH) 3.17(1) 3.66(0.9) 3.59(0.8) Aikinite PbCuBiS3 3.17(1) 4.04(0.95) 4.29(0.95) Loweite Na12Mg7(SO4)13·15(H2O) 3.17(1) 4.496(0.72) 1.614(0.41) Gottlobite ! CaMg(VO4,AsO4)(OH) 3.17(1) 6.34(1) 3.02(0.8) Messelite Ca2(Fe++,Mn)(PO4)2·2(H2O) 3.17(1) 7(0.9) 6.33(0.8) Kuzmenkoite ! (K,Na)2(Mn,Fe)(Ti,Nb)4[Si4O12]2(OH)4·5(H2O) 3.173(1) 7.361(1) 2.918(0.8) Luddenite Pb2Cu2Si5O14·14(H2O) 3.174(1) 2.918(0.38) 1.7302(0.21) Paramelaconite Cu+2Cu++2O3 3.175(1) 1.658(0.45) 1.944(0.44) Walfordite ! (Fe+++,Te++++++)Te++++3O8 3.175(1) 3.093(0.57) 3.083(0.55) IMA1998-050 ! Na4K4[Ba2(H2O,OH)2]Mg[Ti8(Si4O12)4(O,OH)8]·8H2O 3.176(1) 3.211(0.3) 3.752(0.3) Albite NaAlSi3O8 3.18(1) 1.265(0.8) 1.949(0.7) Tveitite-(Y) Ca1-xYxF2+x, x~0.3 3.18(1) 1.38(0.75) 3.35(0.65) Kyanite Al2SiO5 = Al[6]Al[6]OSiO4 3.18(1) 1.635(0.8) 1.49(0.6) Queitite Pb4Zn2(SiO4)(Si2O7)(SO4) 3.18(1) 1.908(0.35) 2.517(0.25) Margarite CaAl2(Al2Si2)O10(OH)2 3.18(1) 2.724(0.8) 4.25(0.7) Phosphoferrite (Fe++,Mn)3(PO4)2·3(H2O) 3.18(1) 2.896(0.6) 4.03(0.1) Donpeacorite (Mn,Mg)MgSi2O6 3.18(1) 3.21(0.7) 3.76(0.7) Labradorite * (Ca,Na)(Si,Al)4O8 3.18(1) 4.01(0.8) 2.49(0.4) Liandratite U++++++(Nb,Ta)2O8 3.18(1) 4.02(0.9) 3.8(0.8) Orthoclase KAlSi3O8 3.18(1) 7.08(0.9) 7.12(0.9) Merlinoite (K,Ca,Na,Ba)7Si23Al9O64·23(H2O) 3.181(1) 6.05(0.3) 5.91(0.2) Sassolite H3BO3 3.183(1) 3.54(0.9) 2.8982(0.8) Barberiite (NH4)BF4 3.186(1) 2.738(0.62) 3.91(0.44) IMA2000-035 ! Na2Ba2FeTiSi2O7(CO3)(OH)3F 3.186(1) 3.1(0.96) 6.94(0.61) Lemmleinite ! NaK2(Ti,Nb)2Si4O12(O,OH)2·2(H2O) 3.186(1) 3.301(0.75) 8.56(0.75) Richterite Na(CaNa)(Mg,Fe++)5[Si8O22](OH)2 3.186(1) 9.6(0.6) 3.517(0.45) Neptunite KNa2Li(Fe++,Mn)2Ti2Si8O24 3.187(1) 1.951(0.9) 1.665(0.8) Chameanite (Cu,Fe)4As(Se,S)4 3.188(1) 3.135(0.95) 3.247(0.87) Petitjeanite Bi+++3(PO4)2O(OH) 3.19(1) 1.048(0.7) 2.07(0.6) Fluocerite-(La) (La,Ce)F3 3.19(1) 1.655(0.55) 2.73(0.4) Chrombismite Bi16CrO27 3.19(1) 1.961(0.7) 1.653(0.5) Bambollaite Cu(Se,Te)2 3.19(1) 2(0.8) 2.05(0.8) Fluocerite-(Ce) (Ce,La)F3 3.19(1) 2.22(0.9) 2.46(0.9) Redledgeite BaTi6Cr+++2O16·(H2O) 3.19(1) 2.64(0.8) 6.64(0.5) Fairchildite K2Ca(CO3)2 3.19(1) 3.65(0.9) 1.989(0.7) Guanajuatite Bi2Se3 3.19(1) 4.39(0.65) 2.677(0.6) Onoratoite Sb8O11Cl2 3.19(1) 4.61(0.67) 3.61(0.4) Cancrinite Na6Ca2Al6Si6O24(CO3)2 3.191(1) 1.947(0.18) 2.695(0.18) Kusachiite CuBi2O4 3.191(1) 3.381(0.85) 3.615(0.4) Frondelite Mn++Fe+++4(PO4)3(OH)5 3.193(1) 2.971(0.92) 2.498(0.62) IMA1999-027 ! Bi(Co,Ni)2(AsO4)2(OH,H2O)2 3.193(1) 3.37(0.9) 11.04(0.9) Sedovite U(MoO4)2 3.193(1) 3.453(1) 3.643(0.9) Jorgensenite Na2(Sr,Ba)14Na2Al12F64(OH,F) 3.194(1) 3.212(0.95) 2.595(0.9) Gwihabaite ! (NH4,K)(NO3) 3.194(1) 3.24(1) 2.156(0.8) Bahianite Al5Sb+++++3O14(OH)2 3.195(1) 2.882(0.7) 2.99(0.7) Zimbabweite Na(Pb,Na,K)2(Ta,Nb,Ti)4As+++4O18 3.195(1) 5.903(0.64) 3.365(0.56) Clarkeite (Na,Ca,Pb)(UO2)O(OH)·0-1(H2O) 3.195(1) 6.394(0.63) 2.541(0.38) Arsenolite As2O3 3.196(1) 2.98(0.72) 1.702(0.57) IMA1999-028 ! Bi(Ni,Co)2(AsO4)2(OH,H2O)2 3.196(1) 3.16(0.97) 2.972(0.81) Versiliaite Fe++4Fe+++8Sb+++12O23S2 3.196(1) 3.573(0.5) 4.842(0.5) Rockbridgeite (Fe++,Mn)Fe+++4(PO4)3(OH)5 3.198(1) 2.96(0.8) 3.307(0.8) Barysilite Pb8Mn(Si2O7)3 3.198(1) 4.162(0.44) 3.468(0.36) Lisetite Na2CaAl4Si4O16 3.2(1) 1.877(0.54) 2.043(0.38) Indite Fe++In2S4 3.2(1) 2.58(0.9) 2.929(0.8) Carminite PbFe+++2(AsO4)2(OH)2 3.2(1) 2.7(0.5) 3.05(0.18) Manganolangbeinite K2Mn2(SO4)3 3.2(1) 2.737(0.8) 4.28(0.7) Reddingite Mn++3(PO4)2·3(H2O) 3.2(1) 2.88(0.9) 3.65(0.4) Haradaite Sr2V+++2O2(Si4O12) 3.2(1) 3.01(0.9) 2.59(0.6) Samsonite Ag4MnSb2S6 3.2(1) 3.18(0.75) 4.04(0.6) Anorthite CaAl2Si2O8 3.2(1) 3.24(1) 3.03(0.09) Keiviite-(Yb) (Yb,Y)2Si2O7 3.2(1) 3.519(0.8) 4.879(0.7) Bergslagite CaBe(AsO4)(OH) 3.2(1) 3.63(1) 2.59(0.8) Magbasite KBa(Al,Sc)(Mg,Fe++)6Si6O20F2 3.2(1) 3.74(0.8) 4.02(0.8) Oligoclase (Na,Ca)(Si,Al)4O8 3.2(1) 3.75(0.8) 4.03(0.8) Bytownite * (Ca,Na)(Si,Al)4O8 3.2(1) 5.05(0.7) 7.14(0.7) Priderite (K,Ba)(Ti,Fe+++)8O16 3.2(1) 6.3(0.9) 9.5(0.9) Satimolite KNa2Al4(B2O5)3Cl3·13(H2O) 3.201(1) 1.586(0.8) 2.473(0.7) Mannardite BaTi6V+++2O16·(H2O) 3.201(1) 2.965(0.9) 3.043(0.6) Rosenhahnite Ca3Si3O8[(OH)2-4x,(CO3)x] 3.201(1) 4.116(1) 7.11(1) Gobbinsite (Na2,Ca)2K2Al6Si10O32·12(H2O) 3.202(1) 1.589(0.7) 2.476(0.7) Ankangite Ba(Ti,V+++,Cr+++)8O16 3.203(1) 2.523(0.9) 9.61(0.75) Ephesite NaLiAl2(Al2Si2)O10(OH)2 3.204(1) 1.779(0.7) 2.999(0.3) Pseudograndreefite Pb6SO4F1O 3.204(1) 3.452(1) 1.873(0.75) Dachiardite-Ca ! (Ca,Na2,K2)5Al10Si38O96·25(H2O) 3.204(1) 3.452(1) 1.873(0.75) Dachiardite-Na ! (Ca,Na2,K2)5Al10Si38O96·25(H2O) 3.204(1) 3.542(1) 1.873(0.75) Dachiardite (Ca,Na2,K2,Cs2)5Al10Si38O96·25(H2O) 3.205(1) 6.407(0.57) 2.635(0.54) Gaylussite Na2Ca(CO3)2·5(H2O) 3.206(1) 2.924(0.7) 3.644(0.6) Cannonite Bi2O(OH)2SO4 3.206(1) 3.246(0.75) 3.152(0.5) Scorzalite (Fe++,Mg)Al2(PO4)2(OH)2 3.206(1) 3.504(0.8) 3.184(0.72) Stronalsite SrNa2Al4Si4O16 3.207(1) 4.284(0.8) 5.096(0.8) Landesite (Mn,Mg)9Fe+++3(PO4)8(OH)3·9(H2O) 3.208(1) 3.095(0.9) 3.075(0.5) Trolleite Al4(PO4)3(OH)3 3.208(1) 10.354(0.94) 3.088(0.76) Orthowalpurgite (UO2)Bi4O4(AsO4)2·2(H2O) 3.209(1) 11.12(1) 2.751(0.6) Sterlinghillite Mn++3(AsO4)2·3(H2O) 3.21(1) 1.608(0.3) 4.24(0.2) Tinnunculite * C10H12N6O8 (?) 3.21(1) 2.03(0.35) 3.72(0.35) Toyohaite Ag2FeSn3S8 3.21(1) 2.91(0.9) 3.02(0.9) Kanoite (Mn++,Mg)2Si2O6 3.21(1) 2.91(0.9) 3.26(0.9) Plagionite Pb5Sb8S17 3.21(1) 2.945(0.9) 2.441(0.8) Rusakovite (Fe+++,Al)5(VO4,PO4)2(OH)9·3(H2O) 3.21(1) 2.99(0.85) 5.99(0.6) Pyatenkoite-(Y) ! Na5(Y,Dy,Gd)TiSi6O18·6(H2O) 3.21(1) 3.18(0.9) 4.04(0.8) Andesine * (Na,Ca)(Si,Al)4O8 3.21(1) 4.02(1) 2.51(0.8) Petscheckite U++++Fe++(Nb,Ta)2O8 3.21(1) 4.47(1) 5.15(0.8) Schubnelite Fe+++2-x(V+++++,V++++)2O4(OH)4 3.21(1) 5.14(1) 2.51(0.9) Paralaurionite PbCl(OH) 3.21(1) 6.35(1) 2.621(0.55) Iriginite (UO2)(Mo++++++2O7)·3(H2O) 3.21(1) 7.16(1) 7.18(1) Phillipsite-Ca ! (Ca,K,Na)1-2(Si,Al)8O16·6(H2O) 3.21(1) 7.16(1) 7.18(1) Phillipsite-K ! (K,Na,Ca)1-2(Si,Al)8O16·6(H2O) 3.21(1) 7.16(1) 7.18(1) Phillipsite-Na ! (Na,K,Ca)1-2(Si,Al)8O16·6(H2O) 3.211(1) 3.243(0.9) 4.106(0.16) Anorthoclase (Na,K)AlSi3O8 3.212(1) 3.012(0.6) 4.88(0.5) Edoylerite Hg++3Cr++++++O4S2 3.213(1) 3.49(0.68) 3.23(0.48) Cubanite CuFe2S3 3.215(1) 2.817(0.88) 3.466(0.78) Sarabauite CaSb10O10S6 3.216(1) 4.84(0.9) 3.116(0.8) Meurigite ! KFe+++7(PO4)5(OH)7·8(H2O) 3.218(1) 1.972(0.42) 2.788(0.4) Senarmontite Sb2O3 3.218(1) 3.132(0.62) 2.8119(0.58) Lulzacite ! Sr2Fe++(Fe++,Mg)2Al4(PO4)4(OH)10 3.219(1) 3.649(0.9) 2.785(0.8) Seeligerite Pb3Cl3(IO3)O 3.22(1) 1.74(0.9) 2.73(0.8) Sillenite Bi12SiO20 3.22(1) 1.859(0.9) 2.87(0.8) Enargite Cu3AsS4 3.22(1) 2.09(0.8) 4.16(0.8) Svyatoslavite CaAl2Si2O8 3.22(1) 2.34(0.9) 1.473(0.6) Rucklidgeite (Bi,Pb)3Te4 3.22(1) 2.41(0.2) 1.92(0.17) Baratovite KCa7(Ti,Zr)2Li3Si12O36F2 3.22(1) 2.7135(0.8) 2.5635(0.6) Vesignieite Cu3Ba(VO4)2(OH)2 3.22(1) 2.97(0.7) 2.59(0.63) Vanadomalayaite CaVOSiO4 3.22(1) 3.1(0.9) 3.53(0.9) Cornwallite Cu5(AsO4)2(OH)4 3.22(1) 3.65(0.9) 6.3(0.7) Cancrisilite Na7Al5Si7O24(C03)·3(H2O) 3.22(1) 4.11(0.6) 5.01(0.6) Osumilite-(Mg) (K,Na)(Mg,Fe++)2(Al,Fe+++)3(Si,Al)12O30 3.22(1) 6.32(0.7) 3.53(0.5) Guanine C5H3(NH2)N4O 3.221(1) 6.37(0.8) 2.42(0.7) IMA1998-024 (Fe+++,Zn)12(As+++,Si)8O30 3.222(1) 2.192(0.25) 2.376(0.25) Tellurobismuthite Bi2Te3 3.223(1) 3.19(0.8) 4.466(0.7) Nickelblodite Na2(Ni,Mg)(SO4)2·4(H2O) 3.224(1) 1.636(0.4) 2.432(0.4) Guyanaite CrO(OH) 3.224(1) 2.76(0.6) 3.619(0.55) Raspite PbWO4 3.224(1) 3.12(0.87) 2.841(0.69) Pyrostilpnite Ag3SbS3 3.226(1) 2.89(0.6) 1.996(0.3) Smirnite Bi2Te++++O5 3.228(1) 2.364(0.58) 2.005(0.33) Kochkarite PbBi4Te7 3.228(1) 2.625(0.81) 5.119(0.77) Cechite Pb(Fe++,Mn)(VO4)(OH) 3.228(1) 5.059(0.65) 3.726(0.5) Yagiite (Na,K)3Mg4(Al,Mg)6(Si,Al)24O60 3.23(1) 1.153(0.7) 1.57(0.7) Asbecasite Ca3(Ti,Sn)As+++6Si2Be2O20 3.23(1) 1.687(0.9) 2.48(0.8) Ilmenorutile (Ti,Nb,Fe+++)O2 3.23(1) 1.781(0.7) 2.155(0.6) Tranquillityite Fe++8(Zr,Y)2Ti3Si3O24 3.23(1) 1.894(0.9) 1.097(0.4) Manganese-shadlunite (Mn,Pb)(Cu,Fe)8S8 3.23(1) 1.933(0.4) 3.06(0.3) Katayamalite * KCa7Li3Ti2(Si6O18)2(OH,F)2 3.23(1) 1.95(0.8) 2.28(0.8) Miersite (Ag,Cu)I 3.23(1) 2.22(0.9) 1.736(0.8) Colquiriite CaLiAlF6 3.23(1) 2.28(0.8) 1.442(0.5) Altaite PbTe 3.23(1) 2.351(0.37) 2.228(0.31) Tellurium Te 3.23(1) 2.36(0.6) 2.21(0.5) Tsumoite BiTe 3.23(1) 2.9(0.8) 5.12(0.8) Descloizite PbZn(VO4)(OH) 3.23(1) 3.286(0.8) 1.687(0.7) Curetonite Ba4Al3Ti(PO4)4(O,OH)6 3.23(1) 3.37(0.75) 5.23(0.55) Sazhinite-(Ce) Na2Ce[Si6O14(OH)]·n(H2O), (n >= 1.5) 3.23(1) 4.65(0.9) 3.04(0.8) Keiviite-(Y) (Y,Yb)2Si2O7 3.23(1) 5(1) 2.11(0.8) Vanuranylite ? (H3O,Ba,Ca,K)1.6(UO2)2V2O8·4(H2O) (?) 3.23(1) 6.4(0.9) 3.03(0.8) Fairfieldite Ca2(Mn,Fe++)(PO4)2·2(H2O) 3.23(1) 10.5(1) 4.49(0.8) Palygorskite (Mg,Al)2Si4O10(OH)·4(H2O) 3.231(1) 4.18(0.45) 2.846(0.42) Poldervaartite (Ca,Mn++)2SiO3(OH)2 3.232(1) 2.236(0.4) 2.486(0.34) Henrymeyerite ! BaFe++Ti7O16 3.233(1) 2.595(0.9) 2.989(0.9) Titanite CaTiSiO5 = CaTiOSiO4 3.233(1) 5.943(1) 3.067(0.6) Paganoite ! (Ni,Co)BiAsO5 3.234(1) 1.689(0.64) 1.98(0.58) Thorianite ThO2 3.234(1) 2.654(0.9) 2.598(0.3) Macphersonite Pb4(SO4)(CO3)2(OH)2 3.235(1) 1.997(0.8) 3.015(0.6) Athabascaite Cu5Se4 3.238(1) 5.29(1) 3.329(0.74) Litvinskite ! Na2([ ],Na,Mn)Zr[Si6O12(OH,O)6] 3.239(1) 3.116(0.4) 2.725(0.3) Atelestite Bi8(AsO4)3(OH)5O5 3.24(1) 1.59(0.8) 3.58(0.65) Richellite Ca3Fe+++10(PO4)8(OH)12·n(H2O) 3.24(1) 1.694(0.85) 2.81(0.85) Erlichmanite OsS2 3.24(1) 2.021(0.3) 1.653(0.25) Wulfenite PbMoO4 3.24(1) 2.091(0.9) 1.619(0.8) Chrysoberyl BeAl2O4 3.24(1) 2.87(0.8) 5.07(0.8) Mottramite PbCu(VO4)(OH) 3.24(1) 3.206(0.85) 3.08(0.7) Lazulite MgAl2(PO4)2(OH)2 3.24(1) 3.31(0.9) 3(0.7) Hyalophane (K,Ba)Al(Si,Al)3O8 3.24(1) 3.75(1) 5.08(1) Chayesite K(Mg,Fe++)4Fe+++(Si12O30) 3.24(1) 5.08(0.8) 7.17(0.8) Osumilite-(Fe) (K,Na)(Fe++,Mg)2(Al,Fe+++)3(Si,Al)12O30 3.24(1) 7.08(1) 5.11(0.8) Elpidite Na2ZrSi6O15·3(H2O) 3.2403(1) 2.9241(0.5) 3.1945(0.5) Bogvadite Na2SrBa2Al4F20 3.243(1) 4.462(0.96) 4.656(0.87) IMA1999-029 ! Pb(Co,Fe)2(AsO4)2(OH,H2O)2 3.244(1) 2.863(0.9) 4.663(0.9) Tsumcorite PbZnFe++(AsO4)2·(H2O) 3.244(1) 2.877(0.8) 2.92(0.5) Clinocervantite ! Sb+++Sb+++++O4 3.245(1) 1.687(0.5) 2.489(0.41) Rutile TiO2 3.245(1) 3.454(0.5) 2.771(0.35) Claudetite As2O3 3.245(1) 4.647(1) 2.724(0.7) Mawbyite Pb(Fe+++Zn)2(AsO4)2(OH,H2O)2 3.246(1) 2.105(0.9) 5.91(0.9) Magnesiodumortierite (Mg,Ti,[ ])<1(Al,Mg)2Al4Si3O18-y(OH)yB y=2-3 3.246(1) 2.682(0.9) 3.073(0.8) Tilasite CaMg(AsO4)F 3.246(1) 2.769(0.6) 2.988(0.6) Feinglosite ! Pb2(Zn,Fe)[(As,S)O4]2·(H2O) 3.248(1) 2.97(0.69) 2.767(0.61) Heyite Pb5Fe++2(VO4)2O4 3.25(1) 1.66(0.35) 2.024(0.35) Stolzite PbWO4 3.25(1) 1.99(0.9) 3.98(0.8) Cebaite-(Ce) Ba3Ce2(CO3)5F2 3.25(1) 2.36(0.7) 2.22(0.55) Pilsenite Bi4Te3 3.25(1) 2.37(0.5) 2.24(0.4) Hedleyite Bi7Te3 (?) 3.25(1) 2.548(0.52) 3.75(0.5) Dusmatovite K(K,Na,[ ])(Mn++,Y,Zr)2(Zn,Li)3Si12O30 3.25(1) 2.76(0.8) 4.95(0.8) Brackebuschite Pb2(Mn,Fe++)(VO4)2(OH) 3.25(1) 3.29(0.95) 4.56(0.95) Blodite Na2Mg(SO4)2·4(H2O) 3.25(1) 3.49(0.7) 2.84(0.6) Owyheeite Pb7Ag2(Sb,Bi)8S20 3.25(1) 3.8(1) 3.45(0.9) Molybdite MoO3 3.25(1) 4.26(0.55) 2.103(0.5) Kuzminite Hg2(Br,Cl)2 3.25(1) 4.8(0.65) 2.76(0.6) Arsentsumebite Pb2Cu(AsO4)(SO4)(OH) 3.25(1) 6.2(1) 1.92(0.9) Pseudo-autunite ? (H3O)4Ca2(UO2)2(PO4)4·5(H2O) (?) 3.251(1) 1.986(0.9) 1.697(0.8) Permingeatite Cu3SbSe4 3.252(1) 2.643(0.7) 5.172(0.7) Pyrobelonite PbMn(VO4)(OH) 3.253(1) 2.693(0.4) 2.708(0.4) Bismite Bi2O3 3.253(1) 3.283(1) 4.233(0.65) Parsonsite Pb2(UO2)(PO4)2·2(H2O) 3.253(1) 5.13(1) 2.815(0.6) Poudretteite KNa2B3Si12O30 3.254(1) 3.271(0.51) 3.145(0.34) Smrkovecite Bi2O(OH)(PO4) 3.256(1) 2.518(0.7) 4.871(0.4) Cuzticite Fe+++2Te++++++O6·3(H2O) 3.256(1) 4.67(0.97) 3.072(0.56) Rappoldite ! Pb(Co,Ni,Zn,)2(AsO4)2·2(H2O) 3.257(1) 2.03(0.7) 15.3(0.7) Mathewrogersite Pb7(Fe,Cu)Al3GeSi12O36·(OH,H2O)6 3.257(1) 3.299(1) 3.324(1) Terskite Na4Zr(H4Si6O18) 3.259(1) 3.159(0.83) 3.097(0.7) Medaite (Mn,Ca)6(V+++++,As)Si5O18(OH) 3.26(1) 1.98(0.8) 1.72(0.7) Hocartite Ag2FeSnS4 3.26(1) 2.65(0.8) 2.85(0.8) Duftite-alpha PbCu(AsO4)(OH) 3.26(1) 2.65(0.8) 2.85(0.8) Duftite-beta PbCu(AsO4)(OH) 3.26(1) 2.93(0.65) 2.56(0.55) Darapiosite KNa2Li(Mn,Zn)2ZrSi12O30 3.26(1) 2.95(0.9) 3.81(0.9) Semseyite Pb9Sb8S21 3.26(1) 2.966(0.94) 5.02(0.72) Vlasovite Na2ZrSi4O11 3.26(1) 3.07(0.7) 3.475(0.6) Kirkiite Pb10Bi3As3S19 3.26(1) 3.22(0.9) 3.27(0.75) Sanidine (K,Na)(Si,Al)4O8 3.26(1) 3.54(1) 4.99(1) Chernikovite (H3O)2(UO2)2(PO4)2·6(H2O) 3.26(1) 3.68(0.9) 2.836(0.7) Sterryite Ag2Pb10(Sb,As)12S29 3.26(1) 3.68(0.7) 4.7(0.6) Hydroxycancrinite Na4(AlSiO4)3(OH)·(H2O) 3.26(1) 3.75(0.9) 4.43(0.6) Eifelite KNa3Mg4Si12O30 3.26(1) 4.69(1) 2.028(0.9) Yttrotungstite-(Y) YW2O6(OH)3 3.26(1) 5.66(1) 5.01(0.9) Inderite MgB3O3(OH)5·5(H2O) 3.26(1) 6.22(1) 2.78(0.8) Odanielite Na(Zn,Mg)3H2(AsO4)3 3.26(1) 7.91(0.9) 11.89(0.7) Volkovskite KCa4[B5O8(OH)4][B(OH)3]Cl·4(H2O) 3.261(1) 2.019(0.6) 2.028(0.6) Nasledovite PbMn3Al4(CO3)4(SO4)O5·5(H2O) 3.262(1) 6.53(0.85) 7.09(0.72) Korobitsynite ! Na3(Ti,Nb)2[Si4O12](OH,O)2·3-4H2O 3.262(1) 7.1(0.9) 3.151(0.8) Vuoriyarvite (K,Na)2(Nb,Ti)2Si4O12(O,OH)2·4(H2O) 3.265(1) 3.098(0.6) 3.148(0.6) Fairbankite PbTe++++O3 3.266(1) 3.438(0.85) 5.39(0.8) Leucite KAlSi2O6 3.267(1) 1.735(0.8) 1.976(0.8) Pirquitasite Ag2ZnSnS4 3.267(1) 3.15(0.62) 4.279(0.38) Hechtsbergite ! Bi2O(OH)(VO4) 3.269(1) 2.003(0.4) 2.14(0.4) Kukharenkoite-(Ce) Ba2Ce(CO3)3F 3.27(1) 2.231(0.95) 1.711(0.75) Sellaite MgF2 3.27(1) 2.35(0.5) 3.91(0.4) Kolarite PbTeCl2 3.27(1) 2.922(0.9) 3.74(0.8) Meneghinite Pb13CuSb7S24 3.27(1) 3.049(0.8) 2.278(0.65) Ferrobustamite Ca(Fe++,Ca,Mn)Si2O6 3.27(1) 3.388(0.95) 2.491(0.93) IMA1998-044 ! PbMn+++2(VO4)2(OH)2 3.27(1) 4.77(1) 6.39(0.75) Pitiglianoite Na6K2Si6Al6O24(SO4)·2(H2O) 3.273(1) 2.003(0.7) 1.707(0.44) Stilleite ZnSe 3.273(1) 3.695(0.88) 2.769(0.65) Vishnevite (Na,Ca,K)6(Si,Al)12O24[(SO4),(CO3),Cl2]2-4·n(H2O) 3.273(1) 3.862(1) 7.96(1) Krautite MnAs+++++O3(OH)2·(H2O) 3.273(1) 9.29(0.8) 4.62(0.5) Taneyamalite (Na,Ca)(Mn++,Mg)12[(Si,Al)6O17]2(O,OH)10 3.278(1) 8.12(0.65) 2.903(0.64) Stoppaniite ! (Fe,Al,Mg)4(Na,[ ])2[Be6Si12O36]·2(H2O) 3.279(1) 2.526(0.6) 4.423(0.4) Lyonsite Cu++3Fe+++4(VO4)6 3.279(1) 8.476(0.9) 3.132(0.6) Villyaellenite Mn++5(AsO3OH)2(AsO4)2·4(H2O) 3.28(1) 1.72(0.9) 2.56(0.9) Tripuhyite Fe++Sb+++++2O6 3.28(1) 2.273(0.41) 2.39(0.4) Bismuth Bi 3.28(1) 2.66(0.8) 5.03(0.8) Malayaite CaSnSiO5 = CaSnOSiO4 3.28(1) 3.03(0.65) 3.48(0.55) Crocoite PbCrO4 3.28(1) 3.09(0.8) 3.19(0.8) Schumacherite Bi3[(V,As,P)O4]2O(OH) 3.28(1) 3.11(0.9) 6.2(0.8) Vinogradovite (Na,K)4Ti4(Si,Al)8O26·3(H2O,Na) 3.28(1) 3.263(0.97) 3.194(0.87) Preisingerite Bi3(AsO4)2O(OH) 3.28(1) 3.49(1) 3.6(1) Iranite Pb10Cu(CrO4)6(SiO4)2(F,OH)2 3.28(1) 3.67(1) 4.8(1) Davyne Na4K2Ca2Si6Al6O24(SO4)Cl2 3.28(1) 3.723(0.95) 3.008(0.5) Tellurite TeO2 3.28(1) 4.407(1) 4.25(0.8) Wulfingite Zn(OH)2 3.28(1) 5.08(0.6) 2.536(0.35) Orthoericssonite BaMn2(Fe+++O)Si2O7(OH) 3.28(1) 8.48(0.8) 3.15(0.7) Magnesiosadanagaite (K,Na)Ca2(Mg,Fe++,Al,Ti)5[(Si,Al)8O22](OH)2 3.282(1) 2.843(0.31) 4.02(0.28) Cliffordite UTe3O9 3.282(1) 3.495(0.8) 3.944(0.5) IMA2000-008 KBSi2O6 3.284(1) 2.997(0.8) 2.446(0.6) Dugganite Pb3Zn3Te(As,V,Si)2(O,OH)14 3.289(1) 3.426(1) 4.037(0.9) Eztlite Pb2Fe+++6(Te++++O3)3(Te++++++O6)(OH)10·8(H2O) 3.289(1) 4.55(0.58) 3.262(0.35) Changoite ! Na2Zn(SO4)2·4(H2O) 3.29(1) 1.701(0.8) 3.38(0.6) Umbozerite Na3Sr4ThSi8(O,OH)24 3.29(1) 1.703(0.8) 2.412(0.8) Tugarinovite MoO2 3.29(1) 1.925(0.9) 3.84(0.4) Shadlunite (Pb,Cd)(Fe,Cu)8S8 3.29(1) 2.512(0.7) 4.43(0.6) Hafnon HfSiO4 3.29(1) 3(0.8) 1.903(0.5) Kuksite Pb3Zn3Te++++++O6(PO4)2 3.29(1) 3(0.9) 3.78(0.9) Cuprorivaite CaCuSi4O10 3.29(1) 3.69(1) 4.81(1) Microsommite (Na,Ca,K)7-8(Si,Al)12O24(Cl,SO4)2-3 3.29(1) 3.87(1) 4.81(0.9) Halurgite Mg2[B4O5(OH)4]2·(H2O) 3.29(1) 9.8(0.8) 1.98(0.55) Zinnwaldite KLiFe++Al(AlSi3)O10(F,OH)2 3.291(1) 2.614(0.8) 3.039(0.75) Maxwellite NaFe+++(AsO4)F 3.292(1) 3.241(0.96) 4.225(0.58) Microcline KAlSi3O8 3.293(1) 1.6927(0.45) 2.4636(0.42) Pretulite ! ScPO4 3.293(1) 4.726(0.57) 2.894(0.51) Vauquelinite Pb2Cu(CrO4)(PO4)(OH) 3.295(1) 2.925(0.75) 4.43(0.55) Nitromagnesite Mg(NO3)2·6(H2O) 3.296(1) 2.809(0.8) 2.945(0.4) Diaphorite Pb2Ag3Sb3S8 3.3(1) 2.518(0.45) 4.43(0.45) Zircon ZrSiO4 3.3(1) 2.72(0.6) 3.78(0.6) Kelyanite Hg+16Hg++20Sb3(Cl,Br)9O28 3.3(1) 2.761(0.8) 2.905(0.8) Paulmooreite Pb2As+++2O5 3.3(1) 2.9(0.8) 3.45(0.4) Andorite PbAgSb3S6 3.3(1) 2.9(0.8) 3.8(0.3) Uchucchacuaite AgPb3MnSb5S12 3.3(1) 2.92(0.7) 4.65(0.5) Carnallite KMgCl3·6(H2O) 3.3(1) 3(0.9) 1.607(0.6) Cheremnykhite Zn3Pb3Te++++O6(VO4)2 3.3(1) 3.05(0.9) 2.51(0.5) Chiluite Bi6Te++++++2Mo++++++2O21 3.3(1) 3.25(0.8) 2.331(0.56) Tinaksite K2Na(Ca,Mn++)2(Ti,Fe)O[Si7O18(OH)] 3.3(1) 3.37(1) 5.09(1) Jungite Ca2Zn4Fe+++8(PO4)9(OH)9·16(H2O) 3.3(1) 4.01(0.9) 2.52(0.7) Laurionite PbCl(OH) 3.302(1) 3.11(0.69) 3.163(0.69) Hemihedrite Pb10Zn(CrO4)6(SiO4)2F2 3.3039(1) 2.5844(0.49) 1.7316(0.36) Squawcreekite (Fe+++,Sb+++++,W++++++)O4·(H2O) 3.305(1) 2.864(0.84) 3.328(0.82) Wallisite PbTl(Cu,Ag)As2S5 3.307(1) 2.88(0.9) 4.16(0.65) Milarite K2Ca4Al2Be4Si24O60·(H2O) 3.307(1) 3.027(0.95) 3.9504(0.95) Tinticite Fe+++5(PO4,VO4)4·7(H2O) 3.31(1) 3.13(0.86) 2.93(0.84) Wurtzite (Zn,Fe)S 3.31(1) 3.71(1) 4.85(0.7) Quadridavyne (Na,K)6Ca2Al6Si6O24Cl4 3.314(1) 3.206(0.6) 1.656(0.4) Lipscombite (Fe++,Mn)Fe+++2(PO4)2(OH)2 3.314(1) 3.83(0.85) 3.52(0.8) Wollastonite-1A CaSiO3 3.314(1) 3.83(0.85) 3.52(0.8) Wollastonite-3A-4A-5A-7A CaSiO3 3.318(1) 2.662(0.3) 8.923(0.2) Bonshtedtite Na3Fe++(PO4)(CO3) 3.318(1) 3.341(1) 1.808(0.7) Argentopyrite AgFe2S3 3.319(1) 3.232(0.9) 5.62(0.7) Bamfordite ! Fe+++Mo2O6(OH)3·(H2O) 3.319(1) 3.495(1) 7.12(1) Rameauite K2CaU++++++6O20·9(H2O) 3.32(1) 1.73(0.9) 2.57(0.9) Bystromite MgSb2O6 3.32(1) 1.912(0.85) 2.57(0.65) Kadyrelite Hg4(Br,Cl)2O 3.32(1) 2.671(0.8) 13.4(0.5) Hyttsjoite ! Pb18Ba2Ca5Mn++2Fe+++2Si30O90Cl·6(H2O) 3.32(1) 2.845(0.6) 2.979(0.6) Molybdofornacite Pb2Cu[(As,P)O4][(Mo,Cr)O4](OH) 3.32(1) 2.939(0.55) 3.29(0.55) Fizelyite Pb14Ag5Sb21S48 (?) 3.32(1) 3.39(1) 2.785(0.7) Playfairite Pb16Sb18S43 3.32(1) 3.49(0.3) 3.68(0.2) Lopezite K2Cr2O7 3.32(1) 4.99(0.9) 2.49(0.8) Anandite (Ba,K)(Fe++,Mg)3(Si,Al,Fe)4O10(S,OH)2 3.32(1) 9.95(0.95) 2.57(0.55) Muscovite KAl2(Si3Al)O10(OH,F)2 3.32(1) 10.1(0.72) 3.35(0.65) Masutomilite K(Li,Al,Mn++)3[(Si,Al)4O10](F,OH)2 3.321(1) 3.358(0.86) 3.09(0.6) Ferro-aluminoceladonite ! K2Fe++2Al2Si8O20(OH)4 3.321(1) 3.358(0.86) 3.09(0.6) Ferroceladonite ! K2Fe++Fe+++Si8O20(OH)4 3.322(1) 3.248(0.93) 6.94(0.84) Sidwillite ! MoO3·2(H2O) 3.322(1) 4.546(0.96) 3.029(0.85) IMA2000-034 (UO2)2CO3(OH)2·4H2O 3.325(1) 9.95(0.85) 4.98(0.35) Tainiolite KLiMg2Si4O10F2 3.33(1) 1.805(0.07) 2.56(0.06) Sopcheite Ag4Pd3Te4 3.33(1) 1.934(0.6) 3.125(0.4) Laurelite Pb(F,Cl,OH)2 3.33(1) 2.53(0.6) 2.564(0.6) Joesmithite PbCa2(Mg,Fe++,Fe+++)5Si6Be2O22(OH)2 3.33(1) 2.607(0.7) 1.66(0.6) Chernykhite (Ba,Na)V+++,Al)2(Si,Al)4O10(OH)2 3.33(1) 2.91(0.6) 3.45(0.4) Ramdohrite Ag3Pb6Sb11S24 3.33(1) 3.12(0.55) 3.03(0.5) Wesselsite SrCu++Si4O10 3.33(1) 3.27(0.5) 4.81(0.5) Hentschelite Cu++Fe+++2(PO4)2(OH)2 3.33(1) 9.95(0.9) 2.4(0.4) Taeniolite KLiMg2Si4O10F2 3.33(1) 17.6(1) 8.65(0.8) Liskeardite (Al,Fe+++)3(AsO4)(OH)6·5(H2O) 3.333(1) 4.495(1) 10.2(1) Ashburtonite HPb4Cu++4Si4O12(HCO3)4(OH)4Cl 3.335(1) 4.43(0.9) 3.391(0.58) IMA1999-035 ! SiO2 3.336(1) 2.752(0.68) 2.878(0.64) IMA1998-069 K2MnV4O12 3.338(1) 3.506(0.9) 4(0.8) Augelite Al2(PO4)(OH)3 3.34(1) 2.129(0.8) 4.26(0.8) Despujolsite Ca3Mn++++(SO4)2(OH)6·3(H2O) 3.34(1) 2.526(0.8) 2.879(0.8) Tetrataenite FeNi 3.34(1) 2.53(0.8) 2.88(0.8) Taenite beta-(Fe,Ni) 3.34(1) 4.26(0.7) 2.139(0.6) Schaurteite Ca3Ge++++(SO4)2(OH)6·3(H2O) 3.34(1) 4.99(0.75) 10(0.75) Lepidolite K(Li,Al)3(Si,Al)4O10(F,OH)2 3.34(1) 10.5(1) 2.61(0.7) Veatchite Sr2B11O16(OH)5·(H2O) 3.342(1) 4.257(0.22) 1.8179(0.14) Quartz SiO2 3.342(1) 4.732(1) 3.024(0.7) Dwornikite (Ni,Fe++)SO4·(H2O) 3.3426(1) 2.9614(0.8) 2.848(0.45) Lanarkite Pb2(SO4)O 3.343(1) 3.029(0.63) 3.06(0.5) Erniggliite Tl2SnAs2S6 3.345(1) 3.22(0.8) 1.871(0.5) Caminite Mg7(SO4)5(OH)4·(H2O) 3.348(1) 3.134(0.85) 12.45(0.7) Charoite K5Ca8(Si6O15)2(Si2O7)Si4O9(OH)·3(H2O) 3.35(1) 1.675(0.8) 1.541(0.6) Graphite C 3.35(1) 1.932(0.7) 2.193(0.5) Danalite Fe++4Be3(SiO4)3S 3.35(1) 2.863(0.95) 1.98(0.35) Cinnabar HgS 3.35(1) 3.07(0.8) 3.26(0.8) Inderborite CaMg[B3O3(OH)5]2·6(H2O) 3.35(1) 3.13(0.9) 1.95(0.8) Schultenite PbHAsO4 3.35(1) 3.36(1) 4.67(0.9) Dorfmanite Na2(PO3OH)·2(H2O) 3.35(1) 3.47(1) 3.02(0.95) Celsian BaAl2Si2O8 3.35(1) 3.76(1) 7.27(1) Laplandite-(Ce) Na4CeTiPSi7O22·5(H2O) 3.351(1) 2.644(0.81) 1.765(0.63) Cassiterite SnO2 3.351(1) 2.942(0.8) 1.768(0.8) Laforetite ! AgInS2 3.36(1) 1.64(0.5) 4.23(0.5) Ilsemannite Mo3O8·n(H2O) (?) 3.36(1) 1.682(0.2) 8.97(0.2) Sidorenkite Na3Mn(PO4)(CO3) 3.36(1) 2.04(0.7) 3.2(0.7) Giniite Fe++Fe+++4(PO4)4(OH)2·2(H2O) 3.36(1) 2.058(0.8) 1.753(0.6) Hawleyite CdS 3.36(1) 2.87(0.6) 2.96(0.5) Eskimoite Ag7Pb10Bi15S36 3.36(1) 2.87(0.6) 2.96(0.5) Ourayite Pb4Ag3Bi5S13 3.36(1) 3.52(0.85) 5.6(0.7) Santite KB5O6(OH)4·2(H2O) 3.36(1) 4.43(1) 4.66(0.8) Sinoite Si2N2O 3.36(1) 4.62(1) 2.34(0.8) Bottinoite NiSb+++++2(OH)12·6(H2O) 3.36(1) 4.64(0.85) 5.28(0.75) Downeyite SeO2 3.361(1) 3.313(0.8) 4.84(0.6) Barbosalite Fe++Fe+++2(PO4)2(OH)2 3.362(1) 3.965(0.9) 2.733(0.7) Eucryptite LiAlSiO4 3.367(1) 1.754(0.9) 2.592(0.9) Manganotapiolite (Mn++,Fe++)(Ta,Nb)2O6 3.367(1) 7.24(1) 3.068(0.8) Bannermanite (Na,K)0.7V+++++6O15 3.367(1) 10.2(1) 2.644(0.8) Siderophyllite KFe++2Al(Al2Si2)O10(F,OH)2 3.369(1) 4.28(0.25) 1.835(0.16) Berlinite AlPO4 3.37(1) 2.02(0.55) 2.52(0.55) Kinoshitalite (Ba,K)(Mg,Mn,Al)3Si2Al2O10(OH)2 3.37(1) 2.057(0.9) 1.756(0.8) Gananite BiF3 3.37(1) 2.409(0.85) 3.22(0.75) Litidionite KNaCuSi4O10 3.37(1) 3.18(0.8) 8.7(0.6) Sainfeldite Ca5(AsO3OH)2(AsO4)2·4(H2O) 3.37(1) 3.26(0.9) 3.9(0.3) Rayite (Ag,Tl)2Pb8Sb8S21 3.37(1) 3.46(1) 4.2(0.9) Bikitaite LiAlSi2O6·(H2O) 3.37(1) 10.1(1) 2.66(0.8) Biotite K(Mg,Fe++)3[AlSi3O10(OH,F)2 3.37(1) 11.3(1) 3.86(0.8) Boggsite NaCa2(Al5Si19O48)·17(H2O) 3.376(1) 3.203(0.8) 2.584(0.7) Lucasite-(Ce) CeTi2(O,OH)6 3.376(1) 3.386(1) 8.583(1) Sekaninaite (Fe++,Mg)2Al4Si5O18 3.379(1) 4.3(0.64) 1.846(0.45) IMA1995-020 CaB3O4(OH)3 3.38(1) 2.068(0.55) 1.7644(0.45) Metacinnabar HgS 3.38(1) 2.177(0.9) 2.073(0.8) Xilingolite Pb3Bi2S6 3.38(1) 2.548(0.9) 10.1(0.8) Magnesiumastrophyllite (Na,K)4Mg2(Fe++,Fe+++,Mn)5Ti2Si8O24(O,OH,F)7 3.38(1) 2.793(0.3) 3(0.3) Thadeuite (Ca,Mn++)(Mg,Fe++,Mn+++)3(PO4)2(OH,F)2 3.38(1) 2.84(0.7) 3.78(0.7) Dadsonite Pb21Sb23S55Cl 3.38(1) 2.903(0.5) 2.787(0.45) Minium Pb++2Pb++++O4 3.38(1) 3.52(1) 2.07(0.6) Lausenite Fe+++2(SO4)3·6(H2O) 3.38(1) 5.22(0.9) 7.32(0.9) Steacyite K1-x(Ca,Na)2ThSi8O20 (x=0.2 to 0.4) 3.38(1) 5.6(1) 6.8(0.6) Minyulite KAl2(PO4)2(OH,F)·4(H2O) 3.38(1) 8.48(0.8) 3.15(0.7) Sadanagaite (K,Na)Ca2(Fe++,Mg,Al,Ti)5[(Si,Al)8O22](OH)2 3.382(1) 2.681(0.7) 1.701(0.5) Dukeite ! Bi+++24Cr++++++8O57(OH)6(H2O)3 3.385(1) 3.315(0.78) 2.939(0.47) Wilhelmkleinite ! ZnFe+++3(AsO4)2(OH)2 3.386(1) 1.9549(0.34) 2.623(0.12) Helvite Mn4Be3(SiO4)3S 3.386(1) 2.553(0.9) 2.921(0.8) Souzalite (Mg,Fe++)3(Al,Fe+++)4(PO4)4(OH)6·2(H2O) 3.39(0.5) 1.37(1) 1.38(1) Lutecite * SiO2 3.39(1) 2.649(0.5) 4.35(0.35) Paramontroseite VO2 3.39(1) 2.866(0.8) 2.652(0.7) Francisite Cu3Bi(SeO3)2O2Cl 3.39(1) 3.22(0.7) 4.41(0.7) Gillespite BaFe++Si4O10 3.39(1) 3.41(0.85) 2.31(0.4) Ferruccite NaBF4 3.39(1) 3.428(0.95) 2.206(0.6) Mullite Al6Si2O13 3.39(1) 3.54(0.67) 5.53(0.48) Zincovoltaite K2Zn5Fe+++3Al(SO4)12·18(H2O) 3.39(1) 3.92(0.8) 4.04(0.8) Robinsonite Pb4Sb6S13 3.392(1) 3.21(0.82) 2.23(0.69) Vistepite Mn++4Sn++++B2(SiO4)4(OH)2 3.393(1) 2.724(0.7) 8.137(0.6) Humberstonite K3Na7Mg2(SO4)6(NO3)2·6(H2O) 3.393(1) 3.12(0.85) 3.188(0.65) Vonbezingite Ca6Cu3(SO4)3(OH)12·2(H2O) 3.395(1) 2.554(0.9) 2.925(0.8) Gormanite Fe++3Al4(PO4)4(OH)6·2(H2O) 3.395(1) 2.819(0.53) 2.739(0.48) Tsugaruite Pb4As2S7 3.396(1) 1.977(0.65) 3.273(0.52) Aragonite CaCO3 3.396(1) 3.355(0.9) 2.72(0.8) Madocite Pb17(Sb,As)16S41 3.399(1) 3.892(0.7) 2.962(0.5) Macfallite Ca2(Mn+++,Al)3(SiO4)(Si2O7)(OH)3 3.4(1) 1.57(0.4) 2.08(0.4) Monsmedite H8K2Tl2(SO4)8·11(H2O) 3.4(1) 1.75(0.9) 2.06(0.8) Vikingite Ag5Pb8Bi13S30 3.4(1) 2.558(0.6) 2.05(0.5) Kuranakhite PbMn++++Te++++++O6 3.4(1) 2.64(0.6) 2.28(0.5) Manganite MnO(OH) 3.4(1) 2.8(0.8) 4.16(0.5) Jagoite (Pb,Na,Ca)3(Fe+++,Mg)Si3O10(Cl,OH) 3.4(1) 2.84(0.9) 1.74(0.6) Hallimondite Pb2(UO2)(AsO4)2 3.4(1) 3.04(0.9) 9.67(0.8) Jamesite Pb2Zn2Fe+++5(AsO4)5O4 3.4(1) 3.52(0.8) 2.71(0.7) Tintinaite Pb22Cu+4(Sb,Bi)30S69 3.4(1) 3.86(0.98) 2.91(0.74) Armenite BaCa2Al6Si9O30·2(H2O) 3.4(1) 4.9(0.9) 3.68(0.8) IMA2000-006 ! Mg(HCO2)2·2H2O 3.4(1) 5.31(0.7) 2.654(0.59) Turkestanite Th(Ca,Na)2(K1-x,[ ]x)Si8O20·n(H2O) 3.4(1) 5.54(0.9) 2.859(0.8) Formicaite Ca(HCOO)2 3.409(1) 3.331(0.9) 4.84(0.9) Kieserite MgSO4·(H2O) 3.41(1) 1.75(0.7) 2.04(0.7) Usovite Ba2CaMgAl2F14 3.41(1) 3.26(0.8) 3.06(0.75) Avogadrite (K,Cs)BF4 3.41(1) 5.57(0.9) 2.9(0.8) Wairakite CaAl2Si4O12·2(H2O) 3.412(1) 2.031(0.6) 2.721(0.6) Sakharovaite (Pb,Fe)(Bi,Sb)2S4 3.414(1) 2.014(0.8) 2.893(0.7) Eclarite Pb9(Cu,Fe)Bi12S28 3.414(1) 10.13(1) 3.198(0.8) Sidpietersite ! Pb++4(S++++++O3S--)O2(OH)2 3.416(1) 2.927(0.64) 3.186(0.4) IMA1999-030 Ca(Cu,Zn)(Fe,Zn)(AsO4)2(OH,H2O)2 3.418(1) 2.763(0.95) 2.358(0.73) Leningradite PbCu++3(VO4)Cl2 3.42(1) 1.903(0.8) 2.455(0.7) Brannerite (U,Ca,Ce)(Ti,Fe)2O6 3.42(1) 3.37(0.65) 2.2(0.6) Sillimanite Al2SiO5 = Al[6]Al[4]OSiO4 3.42(1) 4.77(0.55) 3.07(0.45) Gunningite (Zn,Mn)SO4·(H2O) 3.426(1) 3.378(0.88) 2.941(0.54) Aschamalmite Pb6Bi2S9 3.427(1) 2.753(0.75) 2.779(0.75) IMA1998-045 ! Pb6Sb6S17 3.427(1) 3.042(0.8) 3.312(0.8) Izoklakeite Pb27(Cu,Fe)2(Sb,Bi)19S57 3.428(1) 3.441(1) 3.206(0.8) Chervetite Pb2V2O7 3.428(1) 5.5(0.64) 1.7126(0.61) Eugsterite Na4Ca(SO4)3·2(H2O) 3.43(1) 2.683(0.3) 3.21(0.25) IMA2000-002 ! NaCu4(AsO4)3 3.43(1) 2.813(0.35) 3.7(0.35) Jamesonite Pb4FeSb6S14 3.43(1) 2.925(0.8) 5.61(0.8) Analcime NaAlSi2O6·(H2O) 3.43(1) 3.19(0.65) 2.308(0.6) Pellyite Ba2Ca(Fe++,Mg)2Si6O17 3.43(1) 3.75(0.6) 2.734(0.5) Gratonite Pb9As4S15 3.43(1) 8.33(0.6) 2.72(0.5) Ungemachite K3Na8Fe+++(SO4)6(NO3)2·6(H2O) 3.431(1) 3.335(0.8) 6.67(0.6) Vlodavetsite AlCa2(SO4)2F2Cl·4(H2O) 3.437(1) 2.556(0.8) 4.515(0.7) Xenotime-(Yb) ! YbPO4 3.44(1) 2.49(0.9) 2.66(0.9) Nolanite (V+++,Fe++,Fe+++,Ti)10O14(OH)2 3.44(1) 2.57(0.8) 3.15(0.8) Jinshajiangite Na2K5BaCa(Fe,Mn)8(Ti,Fe,Nb,Zr)4Si8O32(O,F,H2O)6 3.44(1) 2.677(0.95) 2.753(0.75) Bismoclite BiOCl 3.44(1) 2.81(0.3) 3.37(0.25) Cosalite Pb2Bi2S5 3.44(1) 3.12(0.4) 2.52(0.35) Szomolnokite Fe++SO4·(H2O) 3.44(1) 3.38(0.9) 4.13(0.6) Sorbyite Pb19(Sb,As)20S49 3.44(1) 3.85(0.9) 4.08(0.5) Farringtonite Mg3(PO4)2 3.44(1) 8.04(1) 24.1(1) Bornemanite BaNa4Ti2NbSi4O17(F,OH)·Na3PO4 3.441(1) 1.87(0.25) 4.442(0.13) Virgilite LixAlxSi3-xO6 3.441(1) 3.507(1) 4.02(1) Nalipoite NaLi2PO4 3.442(1) 3.101(0.97) 2.12(0.8) Barite BaSO4 3.442(1) 4.06(0.31) 4.36(0.2) Alarsite ! AlAsO4 3.444(1) 3.505(0.52) 2.39(0.49) Mereiterite K2Fe++(SO4)2·4(H2O) 3.445(1) 2.222(0.8) 3.653(0.7) Yaroslavite Ca3Al2F10(OH)2·(H2O) 3.445(1) 4.36(0.19) 2.362(0.14) Rodolicoite Fe+++PO4 3.45(1) 1.768(0.5) 2.56(0.5) Xenotime-(Y) YPO4 3.45(1) 1.961(0.5) 3.03(0.4) Galenobismutite PbBi2S4 3.45(1) 2.8(0.4) 1.99(0.3) Zinkenite Pb9Sb22S42 3.45(1) 2.829(0.4) 4.1(0.3) Benavidesite Pb4(Mn,Fe)Sb6S14 3.45(1) 2.89(0.85) 7.25(0.85) Vayrynenite MnBe(PO4)(OH,F) 3.45(1) 2.92(0.8) 4.17(0.8) Launayite Pb22Sb26S61 3.45(1) 2.94(0.8) 3.53(0.8) Hyalotekite (Ba,Pb,Ca,K)6(B,Si,Al)2(Si,Be)10O28(F,Cl) 3.45(1) 3.07(0.4) 3.82(0.2) Silvialite ! (Ca,Na)4Al6Si6O24(SO4,CO3) 3.45(1) 3.21(0.9) 8.89(0.9) Epistilbite CaAl2Si6O16·5(H2O) 3.45(1) 3.26(0.9) 3.05(0.8) Manaksite KNaMn++Si4O10 3.45(1) 5.45(0.9) 3.06(0.8) Teineite CuTeO3·2(H2O) 3.45(1) 5.56(0.83) 11.29(0.63) Chloromenite ! Cu9O2(SeO3)4Cl6 3.45(1) 7.1(0.93) 3.1(0.67) Nickel-zippeite Ni++2(UO2)6(SO4)3(OH)10·16(H2O) 3.45(1) 8.88(0.8) 6.92(0.8) Sodiumdachiardite (Na2,Ca,K2)4Al4Si20O48·13(H2O) 3.457(1) 4.944(1) 4.732(0.8) Metadelrioite CaSrV2O6(OH)2·(H2O) 3.46(1) 2.69(0.9) 3.38(0.8) Wenkite Ba4Ca6(Si,Al)20O39(OH)2(SO4)3·n(H2O) (?) 3.46(1) 3.07(0.7) 3.03(0.6) Scapolite * (Na,Ca)4[Al3Si9O24]Cl 3.46(1) 3.08(0.4) 3.83(0.2) IMA1998-010 ! Ca4Al6Si6O24(SO4) 3.46(1) 3.08(0.5) 4.72(0.5) Poitevinite (Cu,Fe++,Zn)SO4·(H2O) 3.464(1) 3.069(0.7) 3.824(0.6) Meionite Ca4Al6Si6O24CO3 3.464(1) 3.173(0.59) 1.731(0.19) Qilianshanite NaH4(CO3)(BO3)·2(H2O) 3.468(1) 1.958(0.8) 2.763(0.25) Armalcolite (Mg,Fe++)Ti2O5 3.468(1) 2.948(0.86) 2.887(0.76) Morinite NaCa2Al2(PO4)2(F,OH)5·2(H2O) 3.47(1) IMA1997-042 Pb9Sb10S24 3.47(1) 2.604(0.8) 7.4(0.6) Vyuntspakhkite-(Y) (Y,Yb,Er)4Al2AlSi5O18(OH)5 3.47(1) 2.89(0.8) 2.8(0.7) Berryite Pb3(Ag,Cu)5Bi7S16 3.47(1) 4.66(1) 2.64(0.7) Coffinite U(SiO4)1-x(OH)4x 3.47(1) 6.92(0.78) 1.983(0.63) Paraspurrite Ca5(SiO4)2(CO3) 3.472(1) 2.956(0.54) 2.052(0.46) Scainite ! Pb14Sb30S54O5 3.474(1) 10.43(0.42) 2.606(0.4) Perraultite (Na,Ca)2(Ba,K)2(Mn++,Fe++)8(Ti,Nb)4Si8O32(OH,F,O)6 3.477(1) 5.19(0.9) 2.8(0.5) Horvathite-(Y) NaY(CO3)F2 3.48(1) 2.222(0.8) 3.72(0.7) Vimsite CaB2O2(OH)4 3.48(1) 2.65(0.4) 5.8(0.3) Monimolite (Pb,Ca)2Sb2O7 3.48(1) 2.718(0.85) 2.991(0.85) Kogarkoite Na3(SO4)F 3.48(1) 4.56(0.7) 3.69(0.6) Carlhintzeite Ca2AlF7·(H2O) 3.48(1) 6.9(0.9) 7.3(0.9) Creedite Ca3Al2(SO4)(F,OH)10·2(H2O) 3.483(1) 2.231(0.9) 2.896(0.6) Moschelite Hg+2I2 3.483(1) 2.748(0.8) 4.902(0.45) Pseudobrookite (Fe+++,Fe++)2(Fe++,Ti)O5 3.485(1) 2.743(0.8) 4.88(0.8) Kennedyite ? Mg(Fe+++)2Ti3O10 3.486(1) 1.8306(0.5) 10.449(0.5) Straczekite (Ca,K,Ba)2V8O20·3(H2O) 3.488(1) 2.648(0.35) 2.109(0.22) Rosiaite PbSb+++++2O6 3.49(1) 2.56(0.9) 2.68(0.9) Tungstite WO3·(H2O) 3.49(1) 2.849(0.35) 2.328(0.2) Anhydrite CaSO4 3.49(1) 3.22(0.8) 1.989(0.6) Treasurite Ag7Pb6Bi15S32 3.493(1) 2.139(0.55) 1.824(0.3) Marshite CuI 3.498(1) 7.208(0.7) 2.507(0.5) Luetheite Cu2Al2(AsO4)2(OH)4·(H2O) 3.498(1) 9.78(0.46) 9.6(0.38) Nepskoeite ! Mg4Cl(OH)7·6(H2O) 3.499(1) 2.702(1) 4.644(0.55) Pucherite BiVO4 3.499(1) 3.135(0.4) 4.9(0.35) Szmikite MnSO4·(H2O) 3.5(1) 2.03(0.9) 2.49(0.9) Olekminskite Sr(Sr,Ca,Ba)(CO3)2 3.5(1) 2.34(0.5) 2.85(0.5) Koenenite Na4Mg4Cl12·Mg5Al4(OH)22 3.5(1) 2.773(0.9) 2.961(0.8) Hydroromarchite Sn3O2(OH)2 3.5(1) 2.8(0.7) 2.66(0.5) Zircophyllite (K,Na,Ca)3(Mn,Fe++)7(Zr,Nb)2Si8O27(OH,F)4 3.5(1) 3.03(0.8) 2.61(0.6) Yoderite Mg2(Al,Fe+++)6Si4O18(OH)2 3.5(1) 4.15(0.55) 2.67(0.4) Lindgrenite Cu3(MoO4)2(OH)2 3.5(1) 4.3(1) 4.81(1) Halotrichite Fe++Al2(SO4)4·22(H2O) 3.5(1) 4.76(0.85) 4.58(0.65) Mendozite NaAl(SO4)2·11(H2O) 3.502(1) 2.033(0.4) 5.82(0.35) Millosevichite (Al,Fe+++)2(SO4)3 3.503(1) 2.516(0.19) 4.633(0.15) Serrabrancaite MnPO4·(H2O) 3.5049(1) 4.7058(1) 4.7674(1) Acuminite SrAlF4(OH)·(H2O) 3.505(1) 6.608(0.78) 5.27(0.6) Uklonskovite NaMg(SO4)F·2(H2O) 3.506(1) 10.52(0.9) 2.778(0.8) Niobophyllite (K,Na)3(Fe++,Mn)6(Nb,Ti)2[Si8O24](O,OH,F)7 3.51(1) 1.891(0.33) 2.379(0.22) Anatase TiO2 3.51(1) 2.14(0.9) 2.92(0.9) Lillianite Pb3Bi2S6 3.51(1) 2.151(0.5) 1.835(0.3) Tiemannite HgSe 3.51(1) 2.344(0.8) 2.78(0.7) Twinnite Pb(Sb,As)2S4 3.51(1) 2.687(0.7) 2.78(0.6) Ericssonite BaMn++2Fe+++O[Si2O7](OH) 3.51(1) 2.9(0.9) 3.47(0.8) Brookite TiO2 3.51(1) 4.21(1) 4.85(0.5) Bilinite Fe++Fe+++2(SO4)4·22(H2O) 3.51(1) 10.55(0.9) 2.643(0.8) Hydroastrophyllite (H3O,K,Ca)3(Fe+++,Mn)5-6Ti2Si8(O,OH)31 3.511(1) 2.87(0.6) 3.103(0.45) Davreuxite MnAl6Si4O17(OH)2 3.512(1) 3.202(0.78) 3.015(0.69) Laffittite AgHgAsS3 3.515(1) 4.46(0.43) 2.605(0.36) Grossite CaAl4O7 3.516(1) 2.224(0.7) 5.15(0.55) Azurite Cu3(CO3)2(OH)2 3.516(1) 3.171(0.8) 3.669(0.6) Hashemite Ba(Cr,S)O4 3.52(1) 2.547(0.81) 3.945(0.72) Sarcopside (Fe++,Mn,Mg)3(PO4)2 3.52(1) 2.795(0.9) 4.19(0.5) Guettardite Pb(Sb,As)2S4 3.52(1) 4.33(1) 4.84(0.4) Dietrichite (Zn,Fe++,Mn)Al2(SO4)4·22(H2O) 3.52(1) 4.82(0.9) 3.79(0.35) Apjohnite MnAl2(SO4)4·22(H2O) 3.52(1) 6.13(0.8) 3.57(0.6) Tugtupite Na4AlBeSi4O12Cl 3.52(1) 7.05(1) 2.52(0.9) Chamosite (Fe++,Mg,Fe+++)5Al(Si3Al)O10(OH,O)8 3.52(1) 7.06(1) 1.925(0.7) Amesite Mg2Al(SiAl)O5(OH)4 3.52(1) 7.69(0.95) 3.36(0.8) Hoelite (C6H4)2(CO)2 3.53(1) 2.917(0.6) 2.605(0.5) Leadhillite Pb4(SO4)(CO3)2(OH)2 3.53(1) 2.917(0.6) 2.605(0.5) Susannite Pb4(SO4)(CO3)2(OH)2 3.53(1) 4.69(0.9) 2.65(0.8) Thorite ThSiO4 3.53(1) 11.1(0.8) 5.55(0.5) Kahlerite Fe++(UO2)2(AsO4)2·10-12(H2O) 3.531(1) 10.42(0.9) 2.209(0.8) Chelkarite CaMgB2O4Cl2·7(H2O) (?) 3.535(1) 3.45(0.7) 2.053(0.5) Strontianite SrCO3 3.537(1) 3.056(0.97) 2.8897(0.96) Geocronite Pb14(Sb,As)6S23 3.537(1) 3.781(0.65) 9.51(0.5) Ferrierite-K ! (K,Na)2Mg(Si,Al)18O36·9(H2O) 3.537(1) 3.781(0.65) 9.51(0.5) Ferrierite-Mg ! ((Mg,Na,K)2Mg(Si,Al)18O36·9(H2O) 3.537(1) 3.781(0.65) 9.51(0.5) Ferrierite-Na ! (Na,K)2Mg(Si,Al)18O36·9(H2O) 3.537(1) 4.695(0.9) 2.653(0.6) Thorogummite Th(SiO4)1-x(OH)4x 3.539(1) 2.606(0.8) 2.08(0.5) Santanaite 9PbO·2PbO2·CrO3 3.539(1) 3.772(0.9) 2.913(0.73) IMA1998-016 ! Bi2Fe+++(Fe+++,Co)2(O,OH)2(OH)2(AsO4)2 3.54(1) 2.6(0.9) 1.892(0.8) Montanite Bi2Te++++++O6·2(H2O) 3.54(0.75) 2.653(0.7) 3.06(0.55) Ellenbergerite Mg6TiAl6Si8O28(OH)10 3.54(1) 3.41(0.9) 2.72(0.5) Kobellite Pb22Cu4(Bi,Sb)30S69 3.54(1) 3.41(0.9) 5.57(0.7) Voltaite K2Fe++5Fe+++3Al(SO4)12·18H2O 3.54(1) 3.66(1) 4(0.9) Nuffieldite Pb2Cu(Pb,Bi)Bi2S7 3.54(1) 6.48(0.8) 4.24(0.7) Nealite-(H2O) Pb4Fe++(As+++O3)2Cl4·2(H2O) 3.542(1) 6.48(0.8) 4.237(0.7) Nealite Pb4Fe++(As+++++O4)2Cl4 3.545(1) 3.904(0.8) 2.919(0.7) Junoite Pb3Cu2Bi8(S,Se)16 3.549(1) 2.62(0.95) 4.187(0.75) Chalcocyanite CuSO4 3.55(1) 2.507(0.35) 2.05(0.23) Alstonite BaCa(CO3)2 3.55(1) 2.51(0.65) 2.048(0.2) Paralstonite BaCa(CO3)2 3.557(1) 3.462(0.7) 3.422(0.55) Matteuccite NaHSO4·(H2O) 3.558(1) 3.101(0.82) 3.974(0.72) IMA1999-007 ! Ca(H2AsO4)2 3.559(1) 7.13(0.47) 3.078(0.45) Natronambulite (Na,Li)Mn++4[Si5O14(OH)] 3.56(1) 1.818(0.55) 2.64(0.5) Cahnite Ca2B(AsO4)(OH)4 3.56(1) 1.824(0.75) 2.66(0.5) Wakefieldite-(Y) YVO4 3.56(1) 1.829(0.9) 1.778(0.8) Umangite Cu3Se2 3.56(1) 2.553(0.7) 3.82(0.5) Chenevixite Cu2Fe+++2(AsO4)2(OH)4·(H2O) 3.56(1) 2.91(0.8) 1.779(0.65) Sulphohalite Na6(SO4)2FCl 3.56(1) 3.04(0.8) 3.2(0.7) Uralolite Ca2Be4(PO4)3(OH)3·5(H2O) 3.56(1) 5.99(0.28) 4.35(0.23) Mikasaite Fe+++2(SO4)3 3.56(1) 8.55(1) 5.07(0.6) Metakirchheimerite Co(UO2)2(AsO4)2·8(H2O) 3.56(1) 8.81(0.8) 5.82(0.5) Cuprocopiapite CuFe+++4(SO4)6(OH)2·20(H2O) 3.561(1) 2.715(0.39) 3.058(0.39) Carlosruizite K6(Na,K)4Na6Mg10(Se++++++O4)12(IO3)12·12(H2O) 3.562(1) 2.833(0.8) 4.673(0.55) Parisite-(Ce) Ca(Ce,La)2(CO3)3F2 3.564(1) 2.654(0.75) 2.961(0.7) Danburite CaB2(SiO4)2 3.569(1) 2.505(0.8) 3.008(0.8) Boromuscovite KAl2(Si3B)O10(OH,F)2 3.569(1) 3.118(0.8) 3.53(0.6) Bismuthinite Bi2S3 3.57(1) 3.239(0.77) 2.922(0.67) Roedderite (Na,K)2(Mg,Fe++)5Si12O30 3.57(1) 5.03(0.8) 8.89(0.8) Heinrichite Ba(UO2)2(AsO4)2·10-12(H2O) 3.57(1) 8.65(1) 3.31(0.9) Meta-uranopilite (UO2)6(SO4)(OH)10·5(H2O) 3.57(1) 8.65(1) 3.31(0.9) Meta-uranospinite Ca(UO2)2(AsO4)2·8(H2O) 3.573(1) 2.135(0.9) 2.808(0.8) Chabourneite (Tl,Pb)21(Sb,As)91S147 3.574(1) 2.906(0.45) 3.617(0.4) Matlockite PbFCl 3.58(1) 3.48(0.8) 7.2(0.8) Magnesium-zippeite Mg2(UO2)6(SO4)3(OH)10·16(H2O) 3.58(1) 3.59(0.6) 2.882(0.55) Lorandite TlAsS2 3.58(1) 7.15(1) 2.33(0.9) Dickite Al2Si2O5(OH)4 3.581(1) 2.191(0.56) 1.87(0.47) Frankdicksonite BaF2 3.581(1) 3.89(0.73) 2.778(0.56) Cotunnite PbCl2 3.587(1) 3.139(0.25) 7.21(0.2) Clinoclase Cu3(AsO4)(OH)3 3.59(1) 2.7(0.9) 3.49(0.9) Pierrotite Tl2Sb6As4S16 3.59(1) 8.55(0.9) 4.29(0.6) Metakahlerite Fe++(UO2)2(AsO4)2·8(H2O) 3.59(1) 8.66(0.7) 2.98(0.6) Metalodevite Zn(UO2)2(AsO4)2·10(H2O) 3.59(1) 10.3(1) 5.2(0.7) Zeunerite Cu(UO2)2(AsO4)2·10-16(H2O) 3.593(1) 3.316(0.9) 3.024(0.8) Althausite Mg2(PO4)(OH,F,O) 3.593(1) 3.498(0.5) 2.487(0.32) Cerussite PbCO3 3.6(1) 1.84(0.9) 3.13(0.8) Orlymanite Ca4Mn++3Si8O20(OH)6·2(H2O) 3.6(1) 3.18(0.8) 5.19(0.7) Tisinalite Na3H3(Mn++,Ca,Fe)TiSi6(O,OH)18·2(H2O) 3.6(1) 3.41(0.9) 5.55(0.7) Chenite Pb4Cu(SO4)2(OH)6 3.6(1) 8.34(0.9) 4.23(0.4) Meta-uranocircite Ba(UO2)2(PO4)2·6-8(H2O) 3.607(1) 2.799(0.85) 2.777(0.4) Kamaishilite Ca2Al2SiO6(OH)2 3.61(1) 7.25(1) 3.17(0.8) Metavandendriesscheite PbU7O22·n(H2O)(n<12) 3.61(1) 7.25(1) 3.17(0.75) Vandendriesscheite PbU++++++7O22·12(H2O) 3.61(1) 9.08(0.9) 1.619(0.6) Przhevalskite Pb(UO2)2(PO4)2·4(H2O) 3.619(1) 2.635(0.8) 3.437(0.6) Fleischerite Pb3Ge(SO4)2(OH)6·3(H2O) 3.62(1) 2.57(0.7) 1.749(0.6) Corderoite Hg3S2Cl2 3.62(1) 2.68(0.55) 1.85(0.45) Chromatite CaCrO4 3.62(1) 3.15(0.5) 3.32(0.5) Giessenite Pb13(Cu,Ag)(Bi,Sb)9S28 (?) 3.623(1) 6.443(0.5) 2.615(0.4) Dolerophanite Cu2(SO4)O 3.627(1) 1.911(0.9) 3.1(0.8) Freudenbergite Na2Fe+++2Ti6O16 3.63(1) 2.1(0.8) 6.3(0.8) Sodalite Na8Al6Si6O24Cl2 3.63(1) 10.92(1) 5.46(0.8) Priceite Ca4B10O19·7(H2O) 3.642(1) 6.96(0.4) 4.489(0.3) Veszelyite (Cu,Zn)3(PO4)(OH)3·2(H2O) 3.65(1) 3.12(0.8) 14.7(0.7) Plumbotsumite Pb5Si4O8(OH)10 3.65(1) 5.93(1) 2.968(0.8) Whewellite Ca(C2O4)·(H2O) 3.655(1) 3.481(0.8) 2.675(0.62) IMA1996-043 Pb3Sb+++++(SO4)(AsO4)(OH)6·3(H2O) 3.656(1) 2.739(0.6) 4.85(0.4) Dreyerite BiVO4 3.66(1) 2.64(0.4) 1.83(0.35) Salesite Cu(IO3)(OH) 3.66(1) 3.9(1) 2.25(0.9) Ice H2O 3.66(1) 4.46(0.82) 6.33(0.6) Tsaregorodtsevite N(CH3)4AlSi5O12 3.67(1) 1.566(0.8) 2.675(0.8) Sodium meta-autunite Na2(UO2)2(PO4)2·6-8(H2O) 3.67(1) 1.566(0.8) 2.675(0.8) Sodium-autunite Na2(UO2)2(PO4)2·8(H2O) 3.67(1) 2.63(0.9) 2.86(0.85) Kalicinite KHCO3 3.67(1) 2.78(0.9) 3.03(0.9) Hurlbutite CaBe2(PO4)2 3.67(1) 2.888(0.67) 6.146(0.43) Aheylite (Fe++,Zn)Al6(PO4)4(OH)8·4(H2O) 3.676(1) 4.326(1) 2.074(0.6) Gysinite-(Nd) Pb(Nd,La)(CO3)2(OH)·(H2O) 3.678(1) 2.766(0.9) 1.891(0.7) Wakefieldite-(Ce) (Ce+++,Pb++,Pb++++)VO4 3.68(1) 2.63(0.8) 4.37(0.6) Berthierite FeSb2S4 3.68(1) 2.89(0.8) 6.7(0.7) Faustite (Zn,Cu)Al6(PO4)4(OH)8·4(H2O) 3.68(1) 2.91(0.8) 6.17(0.7) Turquoise CuAl6(PO4)4(OH)8·4(H2O) 3.68(1) 8.05(0.9) 6.68(0.7) Metasideronatrite Na2Fe+++(SO4)2(OH)·(H2O) 3.68(1) 8.71(1) 3.48(0.8) Metatorbernite Cu(UO2)2(PO4)2·8(H2O) 3.682(1) 3.099(0.9) 5.35(0.9) Schmitterite (UO2)TeO3 3.685(1) 3.17(0.95) 1.426(0.8) Phosphoellenbergerite ! Mg14(PO4)6(PO3OH,CO3)2(OH)6 3.688(1) 3.298(1) 4.82(0.8) Afghanite (Na,Ca,K)8(Si,Al)12O24(SO4,Cl,CO3)3·(H2O) 3.69(1) 2.921(0.9) 8.3(0.9) Godovikovite (NH4)(Al,Fe+++)(SO4)2 3.698(1) 2.838(0.99) 2.994(0.96) Paradamite Zn2(AsO4)(OH) 3.7(1) 4.21(0.8) 4.09(0.6) Cyanochroite K2Cu(SO4)2·6(H2O) 3.7(1) 5.08(0.8) 6.04(0.8) Kolwezite (Cu,Co)2(CO3)(OH)2 3.706(1) 4.064(0.95) 4.156(0.85) Picromerite K2Mg(SO4)2·6(H2O) 3.708(1) 2.917(0.7) 3.498(0.64) Slawsonite (Sr,Ca)Al2Si2O8 3.708(1) 5.094(0.8) 2.601(0.7) Rosasite (Cu,Zn)2(CO3)(OH)2 3.71(1) 2.62(0.8) 2.87(0.45) Lazurite Na3Ca(Al3Si3O12)S 3.71(1) 2.628(0.75) 6.45(0.7) Nosean Na8Al6Si6O24(SO4) 3.71(1) 2.97(0.8) 3.333(0.6) Jaskolskiite Pb2+xCux(Sb,Bi)2-xS5, x=0.2 3.71(1) 3.35(0.9) 3.22(0.8) Bavenite Ca4Be2Al2Si9O26(OH)2 3.71(1) 8.55(1) 5.41(0.9) Metaheinrichite Ba(UO2)2(AsO4)2·8(H2O) 3.711(1) 3.314(0.8) 4.842(0.4) Tounkite (Na,Ca,K)8Al6Si6O24(SO4)2Cl·(H2O) 3.712(1) 3.446(0.8) 3.126(0.7) Giuseppettite (Na,K,Ca)7-8(Si,Al)12O24(SO4,Cl)1-2 3.715(1) 3.315(0.75) 4.84(0.36) Liottite (Ca,Na,K)8(Si,Al)12O24[(SO4),(CO3),Cl,OH]4·(H2O) 3.72(1) 2.15(0.85) 3.29(0.75) Cadmoselite CdSe 3.72(1) 2.63(0.5) 6.45(0.3) Hauyne (Na,Ca)4-8Al6Si6(O,S)24(SO4,Cl)1-2 3.72(1) 2.742(0.75) 3.32(0.4) Benitoite BaTiSi3O9 3.72(1) 2.91(0.8) 1.95(0.5) Archerite (K,NH4)H2PO4 3.72(1) 3.17(0.9) 3.35(0.9) Bellingerite Cu++3(IO3)6·2(H2O) 3.72(1) 3.313(0.9) 3.919(0.8) Bystrite (Na,K)7Ca(Si6Al6)O24S4.5·(H2O) 3.72(1) 3.59(0.43) 3.81(0.42) Franzinite [(Na,K)30Ca10][Si30Al30O120](SO4)10·2(H2O) 3.72(1) 3.68(0.53) 2.15(0.28) Witherite BaCO3 3.723(1) 4.013(0.9) 6.8(0.8) Jurbanite Al(SO4)(OH)·5(H2O) 3.7255(1) 3.7341(0.95) 3.6734(0.75) Petalite LiAlSi4O10 3.73(1) 2.296(0.85) 3.98(0.6) Iodargyrite AgI 3.73(1) 2.57(0.8) 2.85(0.7) Dmisteinbergite CaAl2Si2O8 3.73(1) 3.14(0.8) 3.31(0.6) Penfieldite Pb2Cl3(OH) 3.73(1) 3.483(0.43) 2.648(0.3) Sacrofanite (Na,Ca,K)9Si6Al6O24[(OH),(SO4),(CO3),Cl)]4·n(H2O) 3.73(1) 8.86(1) 5.57(0.8) Metazeunerite Cu(UO2)2(AsO4)2·8(H2O) 3.731(1) 3.218(0.45) 3.025(0.4) Boulangerite Pb5Sb4S11 3.74(1) 1.669(0.7) 2.63(0.6) Sohngeite Ga(OH)3 3.74(1) 2.29(0.9) 1.949(0.7) Coloradoite HgTe 3.74(1) 3(0.9) 2.7(0.8) Dufrenoysite Pb2As2S5 3.741(1) 2.534(0.9) 14.973(0.9) Theisite Cu5Zn5[(As+++++,Sb+++++)O4]2(OH)14 3.745(1) 6.829(0.9) 3.692(0.6) Planerite Al6(PO4)2(PO3OH)2(OH)8·4(H2O) 3.749(1) 3.596(0.77) 2.903(0.69) Medenbachite Bi2Fe+++(Cu,Fe++)(O,OH)2(OH)2(AsO4)2 3.75(1) 2.29(0.83) 1.96(0.53) Tin Sn 3.75(1) 3.02(0.9) 5.24(0.9) Biphosphammite (NH4,K)H2PO4 3.752(1) 2.901(0.96) 2.667(0.72) IMA2000-012 Bi2Fe+++(Co,Fe+++)(O,OH)2(OH)2(AsO4)2 3.752(1) 4.63(0.9) 3.35(0.8) Drugmanite Pb2(Fe+++,Al)H(PO4)2(OH)2 3.7542(1) 2.909(0.15) 3.915(0.1) Yeelimite Ca4Al6O12(SO4) 3.755(1) 3.92(1) 6.071(1) Pentagonite Ca(VO)Si4O10·4(H2O) 3.757(1) 14.2(0.95) 5.64(0.83) Faujasite (Na2,Ca,Mg)[Al2Si4O12]·8(H2O) 3.759(1) 2.591(0.67) 2.773(0.57) Szenicsite Cu3MoO4(OH)4 3.76(1) 5.66(1) 14.3(1) Faujasite-Ca ! (Ca,Na2,Mg)3.5[Al7Si17O48]·32(H2O) 3.76(1) 5.66(1) 14.3(1) Faujasite-Mg ! (Mg,Na2,Ca)3.5[Al7Si17O48]·32(H2O) 3.76(1) 5.66(1) 14.3(1) Faujasite-Na ! (Na2,Ca,Mg)3.5[Al7Si17O48]·32(H2O) 3.767(1) 2.655(0.8) 1.687(0.7) Stottite Fe++Ge(OH)6 3.769(1) 3.848(1) 3.656(0.86) Krasnogorite * WO3 3.77(1) 2.78(0.9) 3.37(0.5) Pabstite Ba(Sn,Ti)Si3O9 3.77(1) 3.39(0.7) 3.02(0.6) Chalcosiderite CuFe+++6(PO4)4(OH)8·4(H2O) 3.773(1) 3.742(0.7) 7.79(0.65) Kapitsaite-(Y) ! (Ba,K,Pb,Na)4(Y,Ca,REE)2[Si8B2(B,Si)2O28F] 3.78(1) 3.73(0.56) 3.033(0.55) Niter KNO3 3.784(1) 1.692(0.17) 2.393(0.16) Bernalite Fe(OH)3 3.785(1) 7.63(1) 1.825(0.2) Quintinite-2H Mg4Al2(OH)12CO3·4(H2O) 3.79(1) 3.61(0.4) 11.94(0.4) Terranovaite (Na,Ca)8(Si68Al12)O160-29(H2O) 3.8(1) 2.34(0.4) 2.95(0.4) Mozgovaite ! PbBi4(S,Se)7 3.8(1) 6.58(0.8) 2.21(0.7) Bellbergite (K,Ba,Sr)2Sr2Ca2(Ca,Na)4Al18Si18O72·30(H2O) 3.8(1) 9.02(1) 3.26(0.9) Uramphite (NH4)(UO2)(PO4)·3(H2O) 3.801(1) 2.767(0.43) 2.732(0.41) Edenharterite TlPbAs3S6 3.808(1) 2.696(0.7) 1.907(0.3) Kimrobinsonite Ta(OH)3(O,CO3) 3.808(1) 4.594(0.75) 3.902(0.6) Lokkaite-(Y) CaY4(CO3)7·9(H2O) 3.81(1) 3.03(0.9) 3.42(0.8) Veenite Pb2(Sb,As)2S5 3.81(1) 6.52(0.96) 3.381(0.72) Buddingtonite (NH4)AlSi3O8·0.5(H2O) 3.811(1) 2.858(0.75) 2.745(0.5) Nezilovite ! PbZn2(Mn++++,Ti++++)2Fe+++8O19 3.82(1) 2.68(0.6) 3.01(0.6) Cannizzarite Pb46Bi54S127 3.82(1) 3.13(0.9) 4.53(0.8) Hambergite Be2BO3(OH) 3.827(1) 3.162(0.9) 4.46(0.9) Schuilingite-(Nd) PbCu(Nd,Gd,Sm,Y)(CO3)3(OH)·1.5(H2O) 3.83(1) 2.71(0.7) 1.71(0.6) Jeanbandyite (Fe+++,Mn++)Sn++++(OH)6 3.83(1) 2.795(0.85) 3.345(0.6) Shibkovite ! K(Ca,Mn,Na)2(K2-x,[ ]x)2ZnSi12O30 (x~0.8) 3.83(1) 4.43(1) 2.71(0.95) Pseudoboleite Pb5Cu4Cl10(OH)8·2(H2O) 3.834(1) 2.99(0.9) 4.089(0.9) Senegalite Al2(PO4)(OH)3·(H2O) 3.84(1) 1.72(0.9) 1.57(0.8) Vismirnovite ZnSn++++(OH)6 3.84(1) 3.26(0.9) 3.41(0.9) Mercallite KHSO4 3.84(1) 5.34(0.45) 6.36(0.45) Krauskopfite BaSi2O4(OH)2·2(H2O) 3.842(1) 3.203(0.84) 9.44(0.8) Agrellite NaCa2Si4O10F 3.846(1) 3.192(0.9) 3.511(0.9) Cordylite-(Ce) Ba(Ce,La)2(CO3)3F2 3.847(1) 3.08(0.9) 3.268(0.8) Weibullite Pb6Bi8(S,Se)18 3.85(1) 3.21(0.6) 3.44(0.4) Sulfur S8 3.85(1) 3.75(0.98) 11.2(0.84) Mutinaite Na3Ca4Si85Al11O192·60(H2O) 3.85(1) 4.16(1) 5.8(0.8) Lansfordite MgCO3·5(H2O) 3.85(1) 7.72(1) 8.41(0.8) Arsenuranylite Ca(UO2)4(AsO4)2(OH)4·6(H2O) 3.852(1) 5.036(1) 9.12(1) Sieleckiite Cu3Al4(PO4)2(OH)12·2(H2O) 3.87(1) 3.22(0.7) 2.96(0.4) Fuloppite Pb3Sb8S15 3.87(1) 7.63(1) 2.9(0.7) Bismutoferrite BiFe+++2(SiO4)2(OH) 3.88(1) 2.5(0.3) 2.33(0.18) Moolooite Cu++(C2O4)·n(H2O) (n < 1) 3.88(1) 2.7(0.8) 2.788(0.3) Hectorfloresite Na9(IO3)(SO4)4 3.88(1) 2.74(0.5) 1.729(0.35) Mushistonite (Cu,Zn,Fe)Sn++++(OH)6 3.88(1) 2.795(0.94) 2.636(0.69) Tivanite V+++TiO3(OH) 3.88(1) 3.33(0.8) 2.69(0.6) Shakhovite Hg+4Sb+++++O3(OH)3 3.88(1) 4.48(0.5) 2.74(0.25) Schoenfliesite MgSn++++(OH)6 3.88(1) 5.83(1) 11.6(1) Kolovratite Hydrous vanadate of Ni and Zn 3.883(1) 14.67(1) 2.616(0.7) IMA2000-003 Ba3[(Si,Al)4O8]OCl[Cl,(H2O)]4 3.892(1) 2.82(0.9) 2.685(0.8) IMA2000-023 Ba6Fe+++3Si8O23(CO3)2Cl3·H2O 3.9(1) 2.84(0.7) 2.069(0.6) Iridarsenite (Ir,Ru)As2 3.9(1) 4.36(0.5) 5.22(0.2) Lovozerite H4Na2Ca(Zr,Ti)[Si6O18] 3.917(1) 2.959(0.9) 8.845(0.8) Heulandite (Ca,Na2)Al2Si7O18·6(H2O) 3.917(1) 2.959(0.9) 8.845(0.8) Heulandite-Ca ! (Ca,Na)2-3Al3(Al,Si)2Si13O36·12(H2O) 3.917(1) 2.959(0.9) 8.845(0.8) Heulandite-K ! (K,Na,Ca)2-3Al3(Al,Si)2Si13O36·12(H2O) 3.917(1) 2.959(0.9) 8.845(0.8) Heulandite-Na ! (Na,Ca)2-3Al3(Al,Si)2Si13O36·12(H2O) 3.917(1) 2.959(0.9) 8.845(0.8) Heulandite-Sr ! (Sr,Na,Ca)2-3Al3(Al,Si)2Si13O36·12(H2O) 3.92(1) 2.95(0.6) 3.04(0.6) Innelite (Na,Mg,Ca)2(Ba,K)4Ti3(Si2O7)2(SO4)2(OH,F) 3.927(1) 13.67(0.5) 3.023(0.41) Fuenzalidaite K6(Na,K)4Na6Mg10(SO4)12(IO3)12·12(H2O) 3.93(1) 2.068(0.3) 4.06(0.3) Levyclaudite Pb8Sn7Cu3(Bi,Sb)3S28 3.931(1) 1.762(0.7) 2.778(0.6) Wickmanite Mn++Sn++++(OH)6 3.94(1) 2.77(0.9) 1.76(0.5) Tetrawickmanite Mn++Sn++++(OH)6 3.95(1) 1.971(0.9) 2.79(0.7) Pachnolite NaCaAlF6·(H2O) 3.95(1) 2.552(0.93) 1.898(0.72) Rossmanite ! [ ]LiAl2Al6(Si6O18)(BO3)3(OH)4 3.95(1) 2.738(0.7) 2.97(0.7) Verplanckite Ba2(Mn++,Ti,Fe++)2Si2O6(O,OH,Cl,F)2·3(H2O) 3.95(1) 3.03(0.9) 1.974(0.6) Sosedkoite (K,Na)5Al2(Ta,Nb)22O60 3.96(1) 1.778(0.9) 2.8(0.9) Dzhalindite In(OH)3 3.96(1) 2.98(0.63) 7.83(0.2) Natroapophyllite NaCa4Si8O20F·8(H2O) 3.96(1) 7.8(0.9) 4.57(0.6) Hauckite (Mg,Mn++)24Zn18Fe+++3(SO4)4(CO3)2(OH)81 (?) 3.962(1) 3.24(0.75) 4.017(0.75) Barium-pharmacosiderite * BaFe+++4(AsO4)3(OH)5·5(H2O) 3.963(1) 2.913(0.9) 4.179(0.8) Parakeldyshite Na2ZrSi2O7 3.963(1) 3.268(0.93) 5.244(0.83) Fabianite CaB3O5(OH) 3.965(1) 2.971(0.4) 5.45(0.2) Platynite ? (Bi,Pb)3(Se,S)4 3.965(1) 2.99(0.67) 1.588(0.26) Hydroxyapophyllite KCa4Si8O20(OH,F)·8(H2O) 3.971(1) 8.99(0.85) 3.91(0.7) Clinoptilolite-Ca ! (Ca,Na,K)2-3Al3(Al,Si)2Si13O36·12(H2O) 3.971(1) 8.99(0.85) 3.91(0.7) Clinoptilolite-K ! (K,Na,Ca)2-3Al3(Al,Si)2Si13O36·12(H2O) 3.971(1) 8.99(0.85) 3.91(0.7) Clinoptilolite-Na ! (Na,K,Ca)2-3Al3(Al,Si)2Si13O36·12(H2O) 3.974(1) 2.6(0.72) 2.184(0.49) Roweite Ca2Mn++2B4O7(OH)6 3.978(1) 2.582(0.9) 4.234(0.9) IMA2000-030 ! CaMg3(Al5Mg)(Si6O18)(BO3)3(OH)3(OH) 3.98(1) 1.833(0.9) 2.92(0.8) Zharchikhite AlF(OH)2 3.98(1) 3.04(0.3) 3.61(0.2) Urea CO(NH2)2 3.99(1) 2.26(0.7) 3.56(0.7) Naujakasite Na6(Fe++,Mn)Al4Si8O26 3.99(1) 2.317(0.56) 2.131(0.52) Diaspore AlO(OH) 3.99(1) 3.25(0.8) 3.38(0.7) Scotlandite PbSO3 3.99(1) 4.18(0.8) 2.97(0.52) Keldyshite Na2-xHxZrSi2O7·n(H2O) 4(1) 2.644(0.8) 3.2(0.8) Reinerite Zn3(As+++O3)2 4(1) 3.258(0.75) 3.188(0.75) Orlandiite ! Pb3(Cl,OH)4(SeO3)·(H2O) 4(1) 3.8(0.7) 2.99(0.5) Paracelsian BaAl2Si2O8 4.006(1) 5.049(0.72) 5.901(0.59) IMA1997-036 Ca(Ce,REE)2(CO3)4·(H2O) 4.014(1) 10.33(1) 3.435(0.9) Kanemite NaHSi2O5·3(H2O) 4.02(1) 1.963(0.9) 1.996(0.8) Thomsenolite NaCaAlF6·(H2O) 4.02(1) 2.296(0.8) 2.377(0.6) Barstowite Pb4(CO3)Cl6·(H2O) 4.03(1) 2.554(0.9) 2.97(0.6) Kipushite (Cu,Zn)5Zn(PO4)2(OH)6·(H2O) 4.03(1) 11.6(0.32) 3.156(0.16) Tschernichite (Ca,Na)(Si6Al2)O16·4-8(H2O) 4.04(1) 2.57(0.8) 3.33(0.8) Vrbaite Tl4Hg3Sb2As8S20 4.05(1) 2.485(0.2) 2.841(0.13) Cristobalite SiO2 4.054(1) 9.1(1) 3.028(0.8) Barrerite (Na,K,Ca)2Al2Si7O18·7(H2O) 4.06(1) 1.814(0.6) 1.657(0.4) Burtite CaSn(OH)6 4.06(1) 2.32(0.65) 2.55(0.6) Ramsdellite MnO2 4.07(1) 2.662(0.6) 3.495(0.5) Diomignite Li2B4O7 4.076(1) 2.806(0.68) 3.053(0.67) Parascorodite ! Fe+++AsO4·2(H2O) 4.079(1) 8.15(0.9) 2.79(0.85) Kinichilite Mg0.5[Mn++Fe+++(TeO3)3]·4.5(H2O) 4.08(1) 2.51(0.9) 1.82(0.8) Gutsevichite * Al3(PO4)2(OH)3·8(H2O) 4.08(1) 4.72(0.8) 6.49(0.8) Rosslerite Mg(AsO3OH)·7(H2O) 4.08(1) 5.93(0.71) 6.68(0.71) Legrandite Zn2(AsO4)(OH)·(H2O) 4.09(1) 2.65(0.8) 2.546(0.7) Bracewellite Cr+++O(OH) 4.1(1) 2.327(0.71) 3.1(0.71) Behierite (Ta,Nb)BO4 4.1(1) 2.65(0.75) 2.88(0.5) Bischofite MgCl2·6(H2O) 4.1(1) 2.815(0.8) 8.19(0.65) Levyne-Ca ! (Ca,Na2,K2)Al2Si4O12·6(H2O) 4.1(1) 2.815(0.8) 8.19(0.65) Levyne-Na ! (Na2,Ca,K2)Al2Si4O12·6(H2O) 4.1(1) 3.734(0.9) 4.815(0.8) Deloryite Cu++4(UO2)(MoO4)2(OH)6 4.1(1) 12.9(0.9) 2.96(0.8) Gmelinite-Ca ! (Ca,Na2)Al2Si4O12·6(H2O) 4.1(1) 12.9(0.9) 2.96(0.8) Gmelinite-Na ! (Na2,Ca)Al2Si4O12·6(H2O) 4.107(1) 4.328(0.9) 3.818(0.5) Tridymite SiO2 4.109(1) 2.905(0.9) 7.141(0.8) Brannockite KSn2Li3Si12O30 4.109(1) 4.217(0.87) 5.837(0.66) Quenstedtite Fe+++2(SO4)3·10(H2O) 4.11(1) 4.32(1) 4.83(1) Kalinite KAl(SO4)2·11(H2O) 4.115(1) 3.11(0.84) 2.328(0.49) IMA1999-051 ! (Nb,Ta)BO4 4.128(1) 1.9335(0.54) 2.6692(0.51) Suredaite ! PbSnS3 4.13(1) 3.2(0.5) 3.15(0.4) Umohoite [(UO2)MoO4]·H2O 4.131(1) 5.495(0.75) 2.67(0.45) Ottemannite Sn2S3 4.137(1) 12.2(0.36) 5.642(0.29) Hematolite (Mn,Mg,Al)15(AsO3)(AsO4)2(OH)23 4.14(1) 3.34(0.96) 6.69(0.61) Ekanite ThCa2Si8O20 4.144(1) 2.917(0.9) 2.413(0.8) IMA2000-014 ! Pd3Pb2S2 4.149(1) 2.957(0.9) 3.594(0.8) Baumhauerite Pb3As4S9 4.15(1) 2.7(0.7) 3.78(0.7) Orthochevkinite * (Ce,La,Ca,Na,Th)4(Fe++,Mg)2(Ti,Fe+++)3Si4O22 4.153(1) 3.759(0.8) 2.119(0.7) Nickel-boussingaultite (NH4)2(Ni,Mg)(SO4)2·6(H2O) 4.18(1) 2.35(0.9) 1.434(0.5) Auroantimonate * AuSbO3 4.18(1) 2.69(0.3) 2.452(0.25) Goethite Fe+++O(OH) 4.18(1) 3.74(0.9) 2.25(0.8) Evenkite (CH3)2(CH2)22 4.185(1) 3.196(0.8) 4.52(0.7) Asselbornite (Pb,Ba)(UO2)6(BiO)4(AsO4)2(OH)12·3(H2O) 4.187(1) 12.51(0.7) 6.275(0.65) Vertumnite Ca8Al4(Al4Si5)O12[(OH)36·10(H2O) 4.19(1) 3.177(0.9) 3.474(0.8) Tienshanite BaNa2MnTiB2Si6O20 4.2(1) 2.51(0.9) 2.72(0.9) Swedenborgite NaBe4SbO7 4.2(1) 2.67(0.7) 2.81(0.7) Groutite Mn+++O(OH) 4.2(1) 3.257(0.9) 2.752(0.85) Eulytite Bi4(SiO4)3 4.2(1) 3.79(0.55) 4.13(0.55) Mohrite (NH4)2Fe++(SO4)2·6(H2O) 4.2(1) 4.98(0.9) 4.69(0.8) Stanleyite (V++++O)SO4·6(H2O) 4.2(1) 5.3(0.6) 2.85(0.25) Morenosite NiSO4·7(H2O) 4.2(1) 12.69(1) 2.874(0.7) Stratlingite Ca2Al[(OH)6AlSiO2-3(OH)4-3]·2,5(H2O) 4.201(1) 16.787(1) 8.394(0.8) Tlalocite Cu10Zn6(Te++++O3)(Te++++++O4)2Cl(OH)25·27(H2O) 4.203(1) 3.777(0.6) 2.483(0.3) Parajamesonite Pb4FeSb6S14 4.204(1) 3.313(0.6) 2.749(0.4) Vaughanite TlHgSb4S7 4.21(1) 2.677(0.25) 5.35(0.25) Epsomite MgSO4·7(H2O) 4.21(1) 2.873(0.99) 2.964(0.88) IMA2000-015 ! Na3Sr(La,Ce)FeSi6O17 4.21(1) 3.02(0.9) 7.5(0.9) Churchite-(Y) YPO4·2(H2O) 4.21(1) 5.36(0.8) 4.18(0.5) Goslarite ZnSO4·7(H2O) 4.21(1) 8.07(1) 2.68(0.9) Zunyite Al13Si5O20(OH,F)18Cl 4.21(1) 10.1(1) 2.01(0.6) Carbonate-cyanotrichite Cu++4Al2(CO3,SO4)(OH)12·2(H2O) 4.215(1) 2.965(0.83) 3.326(0.67) Manganonordite-(Ce) ! Na3SrCeMn++Si6O17 4.216(1) 2.964(0.73) 3.325(0.67) Ferronordite-(Ce) ! Na3SrCeFe++Si6O17 4.22(1) 2.085(0.95) 5.11(0.85) Boussingaultite (NH4)2Mg(SO4)2·6(H2O) 4.22(1) 8.45(0.9) 3.37(0.7) Leucosphenite Na4BaTi2O2[B2Si10O28] 4.223(1) 4.207(0.8) 3.647(0.59) Tamarugite NaAl(SO4)2·6(H2O) 4.24(1) 2.62(0.8) 3.31(0.6) Rodalquilarite H3Fe+++2(Te++++O3)4Cl 4.24(1) 2.693(0.8) 3.109(0.7) Foggite CaAl(PO4)(OH)2·(H2O) 4.24(1) 3.65(0.6) 4.83(0.4) Misenite K8H8(SO4)7 (?) 4.247(1) 4.179(0.7) 2.73(0.6) Khademite Al(SO4)F·(H2O) 4.25(1) 2.872(0.9) 7.03(0.82) Ojuelaite ZnFe+++2(AsO4)2(OH)2·4(H2O) 4.25(1) 3.06(0.8) 3.64(0.8) Karasugite SrCaAl(F,OH)7 4.25(1) 4.57(0.4) 2.964(0.2) Retgersite NiSO4·6(H2O) 4.257(1) 5.601(0.6) 2.919(0.55) Struvite (NH4)MgPO4·6(H2O) 4.26(1) 2.905(0.9) 2.048(0.8) Calcio-ancylite-(Nd) CaNd(CO3)2(OH)·(H2O) 4.26(1) 4.19(0.6) 3.91(0.5) Rostite AlSO4(OH,F)·5(H2O) 4.26(1) 4.47(1) 4.12(0.8) Chaoite C 4.26(1) 5.453(0.42) 5.115(0.37) IMA2000-004 ! Bi(OH)SO4·H2O 4.27(1) 2.119(0.8) 2.372(0.7) Khatyrkite (Cu,Zn)Al2 4.27(1) 2.94(0.85) 3(0.85) Dumontite Pb2(UO2)3O2(PO4)2·5(H2O) 4.276(1) 5.16(0.9) 5.62(0.5) Camerolaite Cu4Al2[HSbO4,SO4](OH)10(CO3)·2(H2O) 4.279(1) 3.106(0.6) 3.687(0.4) Mundrabillaite (NH4)2Ca(HPO4)2·(H2O) 4.28(1) 4.81(1) 6.97(1) Arthurite CuFe+++2(AsO4,PO4,SO4)2(O,OH)2·4(H2O) 4.283(1) 3.021(0.92) 10.52(0.54) Braitschite-(Ce) (Ca,Na2)7(Ce,La)2B22O43·7(H2O) 4.29(1) 2.79(0.7) 3.22(0.5) Sternbergite AgFe2S3 4.29(1) 2.93(0.89) 2.06(0.78) Kozoite-(Nd) ! (Nd,La,Sm,Pr)(CO3)(OH) 4.29(1) 5.39(0.6) 4.83(0.45) Variscite AlPO4·2(H2O) 4.298(1) 3.25(0.55) 4.053(0.45) Potassium-alum KAl(SO4)2·12(H2O) 4.31(1) 2.192(0.9) 3.169(0.7) Lukechangite-(Ce) Na3Ce2(CO3)4F 4.314(1) 2.962(0.35) 3.526(0.14) Sodium-alum NaAl(SO4)2·12(H2O) 4.315(1) 5.63(1) 3.136(0.8) Carboborite Ca2Mg(CO3)2B2(OH)8·4(H2O) 4.32(1) 3.19(0.81) 4.06(0.57) Sugilite KNa2(Fe++,Mn++,Al)2Li3Si12O30 4.327(1) 4.079(0.8) 3.273(0.75) Tschermigite (NH4)Al(SO4)2·12(H2O) 4.329(1) 2.928(0.9) 3.806(0.9) Kosnarite KZr++++2(PO4)3 4.33(1) 1.877(0.9) 2.25(0.7) Simmonsite ! Na2LiAlF6 4.33(1) 2.98(0.9) 2.33(0.6) Zircosulfate Zr(SO4)2·4(H2O) 4.33(1) 3.08(0.8) 1.931(0.6) Monohydrocalcite CaCO3·(H2O) 4.33(1) 4.39(0.65) 3.06(0.55) Mascagnite (NH4)2SO4 4.33(1) 6.11(1) 2.72(0.8) Epistolite Na5Ti+++Nb2Si4O12O5F·5(H2O) 4.339(1) 2.883(0.5) 4.067(0.28) Shcherbinaite V2O5 4.35(1) 1.837(0.6) 2.13(0.6) Prosopite CaAL2(F,OH)8 4.35(1) 2.89(0.9) 3.98(0.9) Nickelhexahydrite (Ni,Mg,Fe++)(SO4)·6(H2O) 4.35(1) 8.3(0.9) 8.7(0.8) Diadochite Fe+++2(PO4)(SO4)(OH)·6(H2O) 4.352(1) 3.209(0.8) 3.501(0.7) Emeleusite Na4Li2Fe+++2Si12O30 4.356(1) 7.12(0.7) 3.289(0.65) Lonecreekite (NH4)(Fe+++,Al)(SO4)2·12(H2O) 4.36(1) 2.885(0.89) 3.25(0.7) Phosphogartrellite ! PbCuFe+++(PO4)2(OH,H2O)2 4.36(1) 5.45(1) 3.09(0.9) Mansfieldite AlAsO4·2(H2O) 4.38(1) 3.19(0.9) 2.54(0.8) Bertrandite Be4Si2O7(OH)2 4.38(1) 4.02(0.55) 5.45(0.3) Moorhouseite (Co,Ni,Mn)SO4·6(H2O) 4.39(1) 1.236(0.9) 2.158(0.8) Heterogenite-2H Co+++O(OH) 4.39(1) 3.058(0.9) 5.09(0.8) Eveite Mn2(AsO4)(OH) 4.39(1) 4.2(0.6) 2.89(0.5) Wattevillite Na2Ca(SO4)2·4(H2O) (?) 4.39(1) 5.45(0.5) 5.1(0.45) Hexahydrite MgSO4·6(H2O) 4.39(1) 8.76(1) 1.996(0.7) Bazhenovite CaS5·CaS2O3·6Ca(OH)2·20(H2O) 4.4(1) 2.315(0.8) 1.804(0.6) Heterogenite-3R Co+++O(OH) 4.4(1) 3.61(0.85) 1.838(0.21) Duttonite V++++O(OH)2 4.4(1) 8.79(0.8) 2.75(0.5) Akrochordite Mn4Mg(AsO4)2(OH)4·4(H2O) 4.41(1) 2.41(0.95) 2.12(0.9) Fluoborite Mg3(BO3)(F,OH)3 4.415(1) 3.821(0.8) 2.702(0.6) Boleite KPb26Ag9Cu24Cl62(OH)48 4.42(1) 2.595(0.7) 2.19(0.65) Artroeite PbAlF3(OH)2 4.42(1) 3.34(0.9) 10.1(0.9) Endellite Al2Si2O5(OH)4·2(H2O) 4.42(1) 3.38(0.8) 3.12(0.7) Denningite (Mn,Zn)Te2O5 4.42(1) 4.03(0.9) 2.965(0.8) Bianchite (Zn,Fe++)(SO4)·6(H2O) 4.42(1) 5.11(0.7) 3.65(0.6) Bonattite CuSO4·3(H2O) 4.42(1) 7.03(1) 12(1) Monteregianite-(Y) (Na,K)6(Y,Ca)2Si16O38·10(H2O) 4.42(1) 7.3(0.65) 3.62(0.6) Halloysite Al2Si2O5(OH)4 4.42(1) 9.2(0.9) 3.07(0.85) Pyrophyllite Al2Si4O10(OH)2 4.43(1) 2.56(0.85) 3.66(0.4) Illite * (K,H3O)(Al,Mg,Fe)2(Si,Al)4O10[(OH)2,(H2O)] 4.43(1) 2.93(0.7) 2.97(0.7) Ferrohexahydrite Fe++SO4·6(H2O) 4.43(1) 3.32(0.7) 3.5(0.7) Plancheite Cu8Si8O22(OH)4·(H2O) 4.432(1) 2.3659(0.7) 3.5(0.7) Shattuckite Cu5(SiO3)4(OH)2 4.438(1) 8.86(0.85) 3.383(0.6) Phosphophyllite Zn2(Fe++,Mn)(PO4)2·4(H2O) 4.44(1) 2.407(0.3) 1.858(0.25) Grimaldiite Cr+++O(OH) 4.44(1) 5.26(0.9) 2.97(0.8) Vandenbrandeite Cu(UO2)(OH)4 4.442(1) 1.939(0.95) 3.627(0.5) Metaborite HBO2 4.45(1) 2.55(0.7) 1.492(0.4) Rectorite (Na,Ca)Al4(Si,Al)8O20(OH)4·2(H2O) 4.46(1) 2.353(0.5) 2.462(0.5) Ludjibaite Cu5(PO4)2(OH)4 4.46(1) 2.973(0.8) 2.686(0.45) Ottrelite (Mn,Fe++,Mg)2Al4Si2O10(OH)4 4.46(1) 5.44(0.9) 3.95(0.8) Aplowite (Co,Mn,Ni)SO4·4(H2O) 4.46(1) 8.91(0.9) 7.85(0.8) Alvanite (Zn,Ni)Al4(VO3)2(OH)12·2(H2O) 4.46(1) 13.37(0.76) 3.34(0.71) Revdite Na2Si2O5·5(H2O) 4.47(1) 2.46(0.9) 2.97(0.8) Chloritoid (Fe++,Mg,Mn)2Al4Si2O10(OH)4 4.47(1) 2.46(0.9) 2.97(0.8) Magnesiochloritoid MgAl2SiO5(OH)2 4.47(1) 5.46(0.9) 3.97(0.7) Rozenite Fe++SO4·4(H2O) 4.47(1) 5.46(1) 6.85(0.8) Boyleite (Zn,Mg)SO4·4(H2O) 4.48(1) 3.96(0.65) 5.56(0.65) Ilesite (Mn,Zn,Fe++)SO4·4(H2O) 4.48(1) 8.35(0.79) 4.36(0.67) Meta-aluminite Al2(SO4)(OH)4·5(H2O) 4.48(1) 13.34(0.6) 4.39(0.3) Alunogen Al2(SO4)3·17(H2O) 4.48(0.9) 14.5(0.7) 1.527(0.6) Sobotkite (K,Ca0.5)0.33(Mg,Al)3(Si3Al)O10(OH)2·1-5(H2O) 4.49(1) 2.386(0.7) 2.443(0.6) Pseudomalachite Cu5(PO4)2(OH)4 4.49(1) 3.05(0.8) 2.33(0.6) Hydrophilite CaCl2 4.497(1) 3.91(0.48) 7.82(0.4) Sharpite Ca(UO2)6(CO3)5(OH)4·6(H2O) 4.5(1) 3.2(0.8) 5.65(0.8) Scorodite Fe+++AsO4·2(H2O) 4.5(1) 3.97(0.8) 5.61(0.7) Magnesioaubertite (Mg,Cu)Al(SO4)2Cl·14(H2O) 4.5(1) 4.247(0.69) 3.952(0.58) Aubertite CuAl(SO4)2Cl·14(H2O) 4.5(1) 7.3(1) 13.9(1) Yakhontovite (Ca,K)0.5(Cu,Fe+++,Mg)2Si4O10(OH)2·3(H2O) 4.52(1) 9.04(0.6) 2.77(0.35) Synchysite-(Nd) CaNd(CO3)2F 4.528(1) 2.48(0.9) 2.728(0.9) Carboirite-III Fe++Al2GeO5(OH)2 4.528(1) 2.48(0.9) 2.728(0.9) Carboirite-VIII Fe++(Al,Ge)2 O[(Ge,Si)O4](OH)2 4.53(1) 3.24(0.9) 2.612(0.8) Ferrisurite (Pb,Cu)2-3(CO3)1.5-2(OH,F)0.5-1[(Fe,Al)2Si4O10(OH)2]·n(H2O) 4.53(1) 5.59(0.5) 7.19(0.5) Goosecreekite CaAl2Si6O16·5(H2O) 4.53(1) 5.7(0.7) 3.874(0.6) Yanomamite In(AsO4)·2(H2O) 4.53(1) 15(0.7) 4.97(0.45) Tosudite Na0,5(Al,Mg)6(Si,Al)8O18(OH)12·5(H2O) 4.54(1) 1.518(0.8) 9.6(0.8) Ferripyrophyllite Fe+++2Si4O10(OH)2 4.54(1) 3.96(0.45) 4.017(0.45) Konyaite Na2Mg(SO4)2·5(H2O) 4.55(1) 2.28(0.8) 3.15(0.8) Gearksutite CaAl(OH,F)5·(H2O) 4.57(1) 3.36(0.9) 6.28(0.9) Soddyite (UO2)2SiO4·2(H2O) 4.57(1) 4.51(0.9) 3.72(0.6) Arhbarite Cu2(AsO4)(OH)·6(H2O) 4.58(1) 3.38(0.7) 2.88(0.5) Gortdrumite (Cu,Fe)6Hg2S5 4.58(1) 3.89(0.9) 7.53(0.9) Tengerite-(Y) Y2(CO3)3·2-3H2O 4.58(1) 3.985(0.8) 1.205(0.7) Mopungite NaSb(OH)6 4.59(1) 3.722(0.9) 2.528(0.8) Lenoblite V2O4·2(H2O) 4.6(1) 3.21(0.9) 4.29(0.8) Rutherfordine UO2(CO3) 4.6(1) 3.3(0.77) 3.2(0.76) Sborgite NaB5O6(OH)4·3(H2O) 4.61(1) 8(0.9) 2.408(0.8) Pharmacosiderite KFe+++4(AsO4)3(OH)4·6-7(H2O) 4.613(1) 3.39(0.6) 4.58(0.5) Gilmarite Cu3(AsO4)(OH)3 4.62(1) 2.64(0.5) 2.36(0.2) Feitknechtite beta-Mn+++O(OH) 4.62(1) 3.83(0.9) 3.26(0.85) Ohmilite Sr3(Ti,Fe+++)(Si2O6)2(O,OH)·2-3(H2O) 4.627(1) 2.673(0.6) 3.439(0.4) Xocomecatlite Cu3Te++++++O4(OH)4 4.636(1) 3.392(0.7) 4.946(0.5) Brandholzite ! Mg[Sb(OH)6]2·6(H2O) 4.639(1) 8.022(0.84) 4.967(0.65) IMA1999-045 ! Na4(UO2)(CO3)3 4.64(1) 4.79(1) 2.27(0.5) Felsobanyaite Al4(SO4)(OH)10·5(H2O) 4.66(1) 2.48(0.6) 2.66(0.6) Woodruffite (Zn,Mn++)2Mn++++5O12·4(H2O) 4.66(1) 2.77(0.8) 4.56(0.8) Mounanaite PbFe+++2(VO4)2(OH)2 4.66(1) 2.922(0.8) 3.268(0.4) Brewsterite-Ba ! (Ba,Sr)Al2Si6O16·5(H2O) 4.66(1) 2.922(0.8) 3.268(0.4) Brewsterite-Sr ! (Sr,Ba,Ca)Al2Si6O16·5(H2O) 4.665(1) 3.31(0.9) 2.214(0.8) Akatoreite (Mn++,Fe++)Al2Si8O24(OH)8 4.67(1) 5.5(1) 5.1(0.8) Pascoite Ca3V10O28·17(H2O) 4.68(1) 3.38(0.9) 9.39(0.7) Kratochvilite (C6H4)2CH2 4.687(1) 4.337(0.8) 10.12(0.7) Metavauxite Fe++Al2(PO4)2(OH)2·8(H2O) 4.688(1) 3.273(0.88) 2.865(0.7) Thometzekite Pb(Cu,Zn)2(AsO4)2·2(H2O) 4.689(1) 2.447(0.75) 2.344(0.45) Nitrobarite Ba(NO3)2 4.699(1) 2.349(0.7) 2.877(0.65) Hieratite K2SiF6 4.7(1) 2.45(0.5) 3.83(0.5) Doloresite H8V6O16 4.7(1) 3.322(0.5) 2.865(0.4) IMA2000-018 ! VOSO4(H2O)5 4.704(1) 3.343(0.47) 3.539(0.45) Lunijianlaite LiAl6(Si7Al)O20(OH)10 4.71(1) 1.88(0.7) 2.37(0.7) Lithiophorite Al14Li6(OH)42Mn++3Mn++++18O42 4.72(1) 3.052(0.8) 6.441(0.7) Kinoite Ca2Cu2Si3O8(OH)4 4.725(1) 2.999(0.75) 3.086(0.75) Wardite NaAl3(PO4)2(OH)4·2(H2O) 4.73(1) 3.71(0.85) 3.99(0.6) Chalcanthite CuSO4·5(H2O) 4.73(1) 4.8(1) 4.84(1) Millisite (Na,K)CaAl6(PO4)4(OH)9·3(H2O) 4.74(0.7) 1.819(0.7) 2.25(0.7) Fullerite ! C60 4.758(1) 2.705(0.95) 4.227(0.65) Metavariscite AlPO4·2(H2O) 4.76(1) 3.09(0.8) 9.09(0.6) Kleemanite ZnAl2(PO4)2(OH)2·3(H2O) 4.77(1) 6.39(0.8) 3.18(0.7) Mangangordonite (Mn++,Fe++,Mg)Al2(PO4)2(OH)2·8(H2O) 4.78(1) 2.26(0.4) 2.39(0.4) Nordstrandite Al(OH)3 4.78(1) 3.748(0.8) 4.072(0.8) Derriksite Cu4(UO2)(SeO3)2(OH)6 4.79(1) 3.494(0.92) 3.768(0.33) Wupatkiite (Co,Mg,Ni)Al2(SO4)4·22(H2O) 4.79(1) 3.51(0.78) 5.07(0.7) Lishizhenite ZnFe+++2(SO4)4·14(H2O) 4.794(1) 2.36(0.4) 1.972(0.3) Doyleite Al(OH)3 4.8(1) 4.05(0.5) 3.02(0.25) Haggite V2O2(OH)3 4.8(1) 4.7(0.65) 3.004(0.5) Humboldtine Fe++(C2O4)·2(H2O) 4.805(1) 5.83(0.89) 3.533(0.84) IMA1998-011 ! (Fe++,Fe+++,Mg)11(PO4)2O2(OH)16·4H2O 4.81(1) 4.96(1) 3.9(0.9) Xitieshanite Fe+++(SO4)(OH)·7(H2O) 4.811(1) 4.046(0.69) 5.058(0.43) Romerite Fe3(SO4)4·14(H2O) 4.812(1) 5.257(0.9) 7.31(0.8) Eakerite Ca2SnAl2Si6O18(OH)2·2(H2O) 4.82(1) 2.7(0.53) 4(0.47) Orpiment As2S3 4.82(1) 3.51(0.9) 4.32(0.35) Pickeringite MgAl2(SO4)4·22(H2O) 4.82(1) 4.34(0.4) 4.3(0.2) Gibbsite Al(OH)3 4.82(1) 5.68(0.9) 2.56(0.65) Borax Na2B4O5(OH)4·8(H2O) 4.83(1) 11.1(0.5) 7.07(0.4) Zincaluminite Zn6Al6(SO4)2(OH)26·5(H2O) 4.84(1) 2.59(0.6) 9.67(0.6) Cyanophyllite Cu++5Al2(Sb+++5O4)(OH7)·9(H2O) 4.84(1) 2.729(0.82) 2.869(0.8) Noelbensonite BaMn+++2(Si2O7)(OH)2·(H2O) 4.841(1) 9.638(1) 2.747(0.6) Utahite ! Cu5Zn3(Te++++++O4)4(OH)8·7(H2O) 4.844(1) 2.422(0.45) 2.098(0.35) Cryptohalite (NH4)2SiF6 4.85(1) 2.658(0.8) 3.186(0.8) Cyrilovite NaFe+++3(PO4)2(OH)4·2(H2O) 4.85(1) 3.145(0.85) 7.19(0.78) Zektzerite NaLiZrSi6O15 4.86(1) 2.566(0.85) 3.6(0.75) Antlerite Cu3(SO4)(OH)4 4.87(1) 3.76(0.75) 4.82(0.55) Bieberite CoSO4·7(H2O) 4.88(1) 2.9(0.8) 4.51(0.8) Kolbeckite ScPO4·2(H2O) 4.88(1) 3.77(0.7) 4.82(0.45) Zinc-melanterite (Zn,Cu,Fe++)SO4·7(H2O) 4.89(1) 2.33(0.9) 4.17(0.8) Cualstibite Cu++6Al3(SbO4)3(OH)12·10(H2O) 4.89(1) 3.179(0.7) 2.039(0.6) Glushinskite Mg(C2O4)·2(H2O) 4.89(1) 3.64(0.9) 3.27(0.8) Tikhonenkovite SrAl(OH)F4·(H2O) 4.89(1) 3.73(0.8) 5.57(0.6) Siderotil Fe++SO4·5(H2O) 4.9(1) 3.78(0.64) 3.23(0.2) Melanterite Fe++SO4·7(H2O) 4.908(1) 5.654(0.9) 4.371(0.6) Wilcoxite MgAl(SO4)2F·18(H2O) 4.91(1) 4.47(0.8) 5.45(0.8) Chvaleticeite (Mn++,Mg)SO4·6(H2O) 4.91(1) 5.68(0.7) 4.4(0.5) Svyazhinite MgAl(SO4)2F·14(H2O) 4.92(1) 5.49(0.7) 4.88(0.55) Mallardite Mn++SO4·7(H2O) 4.923(1) 4.586(0.85) 3.968(0.5) Ludlamite (Fe++,Mg,Mn)3(PO4)2·4(H2O) 4.93(1) 7.19(0.5) 8.76(0.5) Flagstaffite C10H22O3 4.93(1) 7.6(1) 15.22(1) Uranospathite HAl(UO2)4(PO4)4·40(H2O) 4.94(1) 3.39(0.8) 4.04(0.6) Idrialite C22H14 4.95(1) 3.33(0.8) 5.58(0.8) Chadwickite ! (UO2)H(AsO3) 4.95(1) 4.98(0.85) 3.77(0.8) Letovicite (NH4)3H(SO4)2 4.96(1) 7.25(0.8) 2.56(0.6) Turanite Cu5(VO4)2(OH)4 4.96(1) 10.6(0.9) 9.53(0.85) Mcauslanite HFe++3Al2(PO4)4F·18(H2O) 4.97(1) 3.15(0.8) 3.59(0.6) Butlerite Fe+++(SO4)(OH)·2(H2O) 4.97(1) 3.2(0.8) 4.14(0.6) Brassite Mg(AsO3OH)·4(H2O) 5(1) 4.24(0.8) 6.29(0.6) Cervelleite Ag4TeS 5.01(1) 2.954(0.35) 3.532(0.25) Metamunirite Na2[V+++++2O6] or NaVO3 5.03(1) 2.31(0.8) 2.97(0.8) Mackinawite (Fe,Ni)9S8 5.03(1) 3.55(0.9) 2.509(0.75) Kamiokite Fe2Mo3O8 5.03(1) 5.56(1) 9.46(1) Chabazite-Ca ! (Ca,Na2,K2,Mg)[Al2Si4O12]·6(H2O) 5.03(1) 5.56(1) 9.46(1) Chabazite-K ! (K2,Ca,Na2,Mg)[Al2Si4O12]·6(H2O) 5.03(1) 5.56(1) 9.46(1) Chabazite-Na ! (Na2,K2,Ca,Mg)[Al2Si4O12]·6(H2O) 5.04(1) 5.17(1) 5.48(0.8) Grandidierite (Mg,Fe++)Al3(BO4)(SiO4)O 5.04(1) 5.69(0.7) 3.355(0.3) Ferrocarpholite (Fe++,Mg)Al2Si2O6(OH)4 5.041(1) 2.518(0.77) 2.947(0.44) Melanothallite Cu2OCl2 5.05(1) 2.74(0.8) 2.99(0.8) Brazilianite NaAl3(PO4)2(OH)4 5.05(1) 5.21(0.9) 2.18(0.75) IMA1999-025 ! Fe++Al3(BO3)(SiO4)O2 5.05(1) 5.57(0.75) 4.94(0.65) Phosphammite (NH4)2HPO4 5.06(1) 3.06(0.8) 3.12(0.7) Natrojarosite NaFe+++3(SO4)2(OH)6 5.06(1) 5.53(1) 7(0.6) Dinite * C20H36 5.068(1) 3.802(0.94) 3.033(0.89) Lecontite (NH4,K)Na(SO4)·2(H2O) 5.068(1) 4.054(0.85) 2.257(0.75) IMA1999-015 BaSi2O5·4H2O 5.07(1) 2.45(0.7) 8.93(0.7) Zaratite Ni3(CO3)(OH)4·4(H2O) 5.07(1) 4.12(0.8) 3.59(0.2) Cupalite (Cu,Zn)Al 5.09(1) 2.97(0.57) 9.04(0.53) Makatite Na2Si4O8(OH)2·4(H2O) 5.1(1) 3.13(0.9) 3.09(0.65) Hydronium-jarosite (H3O)Fe+++3(SO4)2(OH)6 5.114(1) 2.559(0.91) 2.169(0.57) Chestermanite Mg2(Fe+++,Mg,Al,Sb+++++)BO3O2 5.115(1) 12.1(0.56) 2.617(0.32) Montgomeryite Ca4MgAl4(PO4)6(OH)4·12(H2O) 5.12(1) 2.515(0.7) 2.547(0.7) Ludwigite Mg2Fe+++BO5 5.12(1) 7.13(0.9) 3.028(0.8) Coyoteite NaFe3S5·2(H2O) 5.135(1) 3.907(0.7) 5.431(0.6) Minasragrite VO(SO4)·5(H2O) 5.14(1) 3.4(0.8) 4.53(0.6) Lautenthalite PbCu++4(OH)6(SO4)2·3(H2O) 5.14(1) 3.58(0.7) 7.72(0.7) Nitrocalcite Ca(NO3)2·4(H2O) 5.14(1) 5.56(0.91) 3.75(0.78) Pararealgar AsS 5.14(1) 10.37(1) 8.29(0.9) Mooreite (Mg,Zn,Mn)15(SO4)2(OH)26·8(H2O) 5.15(1) 2.624(0.6) 12.28(0.5) Kingsmountite (Ca,Mn++)4(Fe++,Mn++)Al4(PO4)6(OH)4·12(H2O) 5.15(1) 5.47(0.6) 3.92(0.5) Patronite VS4 5.17(1) 2.64(0.9) 2.63(0.7) Ikaite CaCO3·6(H2O) 5.18(1) 12(0.6) 2.907(0.5) Zodacite Ca4Mn++Fe+++4(PO4)6(OH)4·12(H2O) 5.19(1) 4.31(0.7) 5.41(0.7) Boralsilite ! Al16B6Si2O27 5.22(1) 2.23(0.5) 3.74(0.4) Anyuiite Au(Pb,Sb)2 5.22(1) 2.955(0.8) 8.06(0.6) Haidingerite Ca(AsO3OH)·(H2O) 5.22(1) 3.54(0.8) 4.38(0.5) Metastudtite UO4·2(H2O) 5.23(1) 2.96(0.9) 3.59(0.8) Komkovite BaZrSi3O9·3(H2O) 5.23(1) 3.02(0.34) 1.817(0.31) Calciohilairite CaZrSi3O9·3(H2O) 5.23(1) 5.43(0.8) 4.98(0.75) Werdingite (Mg,Fe)2Al14B4Si4O37 5.23(1) 10.459(0.82) 3.486(0.54) Christelite Zn3Cu2(SO4)2(OH)6·4(H2O) 5.24(1) 8.84(0.6) 3.251(0.4) Ilinskite ! NaCu5O2(SeO3)2Cl 5.25(1) 4.35(0.5) 3.709(0.4) Henmilite Ca2Cu[B(OH)4]2(OH)4 5.27(1) 5.99(0.95) 2.9(0.7) Nasinite Na2B5O8(OH)·2(H2O) 5.28(1) 6(0.6) 3.17(0.5) Hilairite Na2ZrSi3O9·3(H2O) 5.29(1) 8.94(0.8) 3.277(0.4) Ferrostrunzite Fe++Fe+++2(PO4)2(OH)2·6(H2O) 5.34(1) 2.83(0.9) 7.37(0.8) Euchroite Cu2(AsO4)(OH)·3(H2O) 5.34(1) 8.87(0.8) 3.267(0.4) Ferristrunzite Fe+++Fe+++2(PO4)2(OH)3·5(H2O) 5.37(1) 3.26(0.8) 3.394(0.8) Narsarsukite Na2(Ti,Fe+++)Si4(O,F)11 5.39(1) 2.31(0.7) 2.05(0.5) Pinnoite MgB2O4·3(H2O) 5.39(1) 4.94(0.9) 3.35(0.8) Chalcomenite CuSeO3·2(H2O) 5.4(1) 1.91(0.9) 3.12(0.5) Sulvanite Cu3VS4 5.4(1) 2.16(0.5) 4.76(0.4) Vyalsovite FeS·Ca(OH)2·Al(OH)3 5.4(1) 3.19(0.9) 2.94(0.8) Realgar AsS 5.41(1) 2.32(0.5) 1.86(0.4) Tochilinite 6Fe0.9S·5(Mg,Fe++)(OH)2 5.43(1) 3.3(0.8) 5.53(0.5) Ammonioleucite (NH4,K)AlSi2O6 5.44(1) 4.02(0.14) 2.637(0.1) Eriochalcite CuCl2·2(H2O) 5.47(1) 1.725(0.85) 1.775(0.78) Rosenbergite AlF3·3(H2O) 5.47(1) 2.742(0.7) 2.767(0.6) Clinoatacamite ! Cu2(OH)3Cl 5.48(1) 8.52(0.7) 3.84(0.6) Coskrenite-(Ce) ! (Ce,Nd,La)2(SO4)2(C2O4)·8(H2O) 5.48(1) 8.52(0.7) 6.72(0.6) IMA1996-056 ! (Ce,Nd,La)2(SO4)2(C2O4)·12(H2O) 5.49(1) 3.21(0.75) 3.26(0.6) Mirabilite Na2SO4·10(H2O) 5.496(1) 11.02(0.9) 4.079(0.5) Niedermayrite ! Cu4Cd(SO4)2(OH)6·4(H2O) 5.5(1) 6.09(0.9) 5.2(0.7) Refikite C19H31COOH 5.5(1) 8.76(1) 7.31(0.9) Swartzite CaMg(UO2)(CO3)3·12(H2O) 5.52(1) Caoxite ! Ca(C2O4)·3(H2O) 5.52(1) 8.2(1) 2.883(0.8) IMA2000-029 ! Cu5Cl2(OH)8(H2O)2 5.53(1) 2.762(0.7) 4.228(0.6) Rokuhnite Fe++Cl2·(H2O) 5.54(1) 2.77(0.9) 4.53(0.9) Andalusite Al2SiO5 = Al[6]Al[5]OSiO4 5.54(1) 10.38(0.337) 6.59(0.331) Hartite * C20H34 5.55(1) 7.74(0.9) 6.88(0.8) Roubaultite Cu2(UO2)3(CO3)2O2(OH)2·4(H2O) 5.553(1) 2.758(0.52) 2.785(0.52) Belloite ! Cu(OH)Cl 5.59(1) 2.54(0.8) 3.08(0.8) Bandylite CuB(OH)4Cl 5.59(1) 2.924(0.4) 5.49(0.4) Nickelbischofite NiCl2·6(H2O) 5.6(1) 14.9(1) 3.299(0.8) Szymanskiite Hg+16(Ni,Mg)6(H3O)8(CO3)12·3(H2O) 5.615(1) 2.592(0.9) 3.551(0.8) Tunisite NaCa2Al4(CO3)4(OH)8Cl 5.65(1) 7.296(0.75) 5.926(0.7) Ceruleite Cu2Al7(AsO4)4(OH)13·12(H2O) 5.66(1) 2.4(0.8) 2.57(0.7) Botallackite Cu2Cl(OH)3 5.66(1) 2.59(0.45) 5.02(0.45) Magnesiocarpholite MgAl2Si2O6(OH)4 5.66(1) 2.96(0.95) 3.5(0.65) Orpheite PbAl3(PO4,SO4)2(OH)6 (?) 5.669(1) 2.827(0.94) 3.567(0.9) Kanonaite (Mn+++,Al)AlSiO5 5.67(1) 7.93(1) 13(1) Andersonite Na2Ca(UO2)(CO3)3·6(H2O) 5.68(1) 1.575(0.6) 2.76(0.6) Yushkinite V1-xS·n(Mg,Al)(OH)2 5.69(1) 3.426(0.8) 2.992(0.75) Ahlfeldite (Ni,Co)SeO3·2(H2O) 5.7(1) 3.385(0.16) 1.69(0.14) Dawsonite NaAl(CO3)(OH)2 5.7(1) 3.54(0.91) 2.86(0.78) Acetamide CO(CH3)(NH2) 5.7(1) 6.35(0.95) 3.28(0.3) Kladnoite C6H4(CO)2NH 5.71(1) 11.4(1) 3.37(0.6) Valleriite 4(Fe,Cu)S·3(Mg,Al)(OH)2 5.72(1) 7.28(0.9) 3.244(0.6) Faheyite (Mn,Mg)Fe+++2Be2(PO4)4·6(H2O) 5.73(1) 2.69(0.8) 8.11(0.8) Orschallite Ca3(SO3)2SO4·12(H2O) 5.73(1) 5.08(0.7) 2.62(0.5) Carpholite MnAl2Si2O6(OH)4 5.74(1) 1.765(0.85) 2.88(0.75) Ralstonite NaxMgxAl2-x(F,OH)6·(H2O) 5.74(1) 7.1(1) 3.239(0.7) Poughite Fe+++2(TeO3)2(SO4)·3(H2O) 5.75(1) 6.3(0.5) 4.36(0.4) Widgiemoolthalite (Ni,Mg)5(CO3)4(OH)2·4-5(H2O) 5.76(1) 2.915(0.35) 3.445(0.25) Tolbachite CuCl2 5.76(1) 3.08(0.8) 8.09(0.8) Grimselite K3Na(UO2)(CO3)3·(H2O) 5.77(1) 6.68(0.85) 3.32(0.5) Hydroboracite CaMgB6O8(OH)6·3(H2O) 5.79(1) 2.899(0.82) 9.2(0.39) Hydromagnesite Mg5(CO3)4(OH)2·4(H2O) 5.8(1) 5.24(0.9) 7.62(0.9) Indigirite Mg2Al2(CO3)4(OH)2·15(H2O) 5.81(1) 2.905(0.8) 3.602(0.8) Usonite As4S5 5.81(1) 2.91(0.8) 3.6(0.8) Uzonite As4S5 5.811(1) 9.318(0.89) 5.679(0.43) Hellyerite NiCO3·6(H2O) 5.824(1) 5.866(0.8) 3.163(0.15) Hydromolysite ? FeCl3·6(H2O) 5.84(1) 2.72(0.72) 4.98(0.61) Jokokuite MnSO4·5(H2O) 5.84(1) 4.14(0.7) 3.99(0.6) Anthonyite Cu(OH,Cl)2·3(H2O) 5.84(1) 9.7(1) 3.139(0.9) IMA2000-047 ! Mg(V+++++2O6)·7H2O 5.85(1) 2.59(0.8) 3.16(0.25) Scacchite MnCl2 5.85(1) 3.03(0.95) 2.276(0.45) Beaverite PbCu++(Fe+++,Al)2(SO4)2(OH)6 5.87(1) 2.371(0.5) 1.946(0.45) Leonite K2Mg(SO4)2·4(H2O) 5.88(1) 3.06(0.9) 3.65(0.6) Benauite HSrFe+++3(PO4)2(OH)6 5.89(1) 2.94(0.5) 2.57(0.1) Chloromagnesite * MgCl2 5.89(1) 3.66(0.9) 2.926(0.8) Clinochalcomenite CuSeO3·2(H2O) 5.89(1) 8.01(1) 3.14(0.9) Dewindtite Pb3[H(UO2)3O2(PO4)2]2·12(H2O) 5.897(1) 12.77(0.9) 2.871(0.8) Mourite U++++Mo++++++5O12(OH)10 5.9(1) 7.95(0.81) 3.941(0.71) Deliensite ! Fe++(UO2)2(SO4)2(OH)2·3(H2O) 5.91(1) 9.5(0.9) 3.16(0.7) Zanazziite Ca2(Mg,Fe++)(Mg,Fe++,Al,Mn,Fe+++)4Be4(PO4)6(OH)4·6(H2O) 5.92(1) 3.4(0.8) 2.96(0.6) Studtite UO4·4(H2O) 5.926(1) 6.773(0.63) 5.034(0.58) Metarossite CaV2O6·2(H2O) 5.93(1) 3.49(0.9) 2.36(0.7) Cesbronite-x Cu5(TeO3)2(OH)6·2(H2O) 5.934(1) 3.49(0.92) 4.889(0.71) Cesbronite Cu5(TeO3)2(OH)6·2(H2O) 5.94(1) 2.97(0.43) 5.21(0.37) Schertelite (NH4)2MgH2(PO4)2·4(H2O) 5.95(1) 3.01(0.9) 6.46(0.8) Paraumbite K3Zr2HSi6O18·n(H2O) n=3 to 7 5.96(1) 9.58(0.9) 3.18(0.7) Roscherite Ca(Mn++,Fe++)5Be4(PO4)6(OH)4·6(H2O) 5.97(1) 6.11(0.8) 3.09(0.7) IMA2000-024 Na2BeSi4O10·4H2O 5.99(1) 3.58(0.9) 5.471(0.7) Melanophlogite SiO2 6.006(1) 3.003(0.7) 3.047(0.6) Olmsteadite KFe++2(Nb,Ta)(PO4)2O2·2(H2O) 6.01(1) 3.005(0.8) 3.054(0.7) Johnwalkite K(Mn++,Fe+++,Fe++)2(Nb,Ta)(PO4)2O2((H2O),OH)2 6.015(1) 3.694(0.67) 2.53(0.25) Mcguinnessite (Mg,Cu)2(CO3)(OH)2 6.02(1) 7.84(1) 3.25(0.8) Sitinakite Na2K(Ti,Nb)4O4(SiO4)2(O,OH)·4(H2O) 6.05(1) 3.325(0.59) 6.92(0.26) IMA1998-031 ! (MoO2)2As2O5·3(H2O) 6.06(1) 2.98(0.9) 3.97(0.8) Natrosilite Na2Si2O5 6.068(1) 3.265(0.9) 3.023(0.5) Gainesite Na(Na,K)(Be,Li)(Zr,Zn)2(PO4)4·1-2(H2O) 6.084(1) 3.858(0.9) 3.471(0.8) Frolovite CaB2(OH)8 6.11(1) 3.164(0.65) 2.346(0.53) Boehmite AlO(OH) 6.11(1) 4.5(0.9) 3.179(0.7) Moydite-(Y) YB(OH)4(CO3) 6.14(1) 4.381(0.8) 3.516(0.6) Kamphaugite-(Y) Ca(Y,REE)(CO3)4(OH)2·3(H2O) 6.15(1) 2.277(0.45) 1.83(0.25) Molybdenite MoS2 6.158(1) 3.076(0.6) 10.18(0.4) Mantienneite KMg2Al2Ti(PO4)4(OH)3·15(H2O) 6.161(1) 3.286(0.5) 3.039(0.3) Selwynite NaK(Be,Al)Zr2(PO4)4·2(H2O) 6.17(1) 7.45(1) 3.87(0.9) Callaghanite Cu2Mg2(CO3)(OH)6·2(H2O) 6.18(1) 2.277(0.35) 2.731(0.25) Tungstenite WS2 6.18(1) 2.775(0.65) 4.42(0.3) Weddellite Ca(C2O4)·2(H2O) 6.19(1) 2.69(0.7) 4.56(0.6) Vyacheslavite U++++(PO4)(OH)·2.5(H2O) 6.2(1) 2.202(0.8) 2.657(0.75) Szaibelyite MgBO2(OH) 6.2(1) 10.3(0.9) 7.46(0.8) Paulkerrite K(Mg,Mn)2(Fe+++,Al)2Ti(PO4)4(OH)3·15(H2O) 6.207(1) 3.894(0.95) 3.094(0.65) Howlite Ca2B5SiO9(OH)5 6.215(1) 7.22(1) 3.104(0.7) Kaliborite KHMg2B12O16(OH)10·4(H2O) 6.23(1) 3.14(0.8) 3.96(0.7) Curite Pb3+x(H2O)2[(UO2)4+x(OH)3-x]2, x~0.5 6.23(1) 3.15(0.9) 10.4(0.9) Matveevite KTiMn2Fe+++2(PO4)4(OH)3·15(H2O) 6.25(1) 6.5(0.7) 3.23(0.6) Alumohydrocalcite CaAl2(CO3)2(OH)4·3(H2O) 6.26(1) 3.29(0.9) 2.47(0.8) Lepidocrocite FeO(OH) 6.28(1) 3.14(0.6) 3.35(0.2) Sincosite Ca(V++++O)2(PO4)2·5(H2O) 6.28(1) 3.49(0.8) 4.78(0.7) Wakabayashilite (As,Sb)11S18 6.29(1) 1.919(0.6) 3.138(0.5) Kiddcreekite Cu6SnWS8 6.32(1) 2.478(0.8) 2.744(0.8) Sussexite MnBO2(OH) 6.32(1) 3.28(0.75) 2.928(0.65) Krohnkite * Na2Cu(SO4)2·2(H2O) 6.35(1) 3.24(0.6) 3.167(0.4) Gaultite Na4Zn2Si7O18·5(H2O) 6.389(1) 3.193(0.45) 2.879(0.2) Ulrichite CaCu(UO2)(PO4)2·4(H2O) 6.395(1) 3.434(0.8) 12.803(0.5) Graemite CuTeO3·(H2O) 6.4(1) 4.72(0.5) 6.1(0.5) Aksaite MgB6O7(OH)6·2(H2O) 6.42(1) 7.28(1) 4(0.8) Camgasite CaMg(AsO4)(OH)·5(H2O) 6.428(1) 3.217(0.7) 2.6(0.6) Jensenite Cu++3Te++++++O6·2(H2O) 6.445(1) 9.002(0.3) 8.214(0.26) Simonellite C19H24 6.47(1) 8.31(1) 4.97(0.25) Meyerhofferite Ca2B6O6(OH)10·2(H2O) 6.48(1) 3.042(0.8) 2.822(0.7) Fingerite Cu11(VO4)6O2 6.48(1) 3.24(0.7) 3.09(0.6) Fluellite Al2(PO4)F2(OH)·7(H2O) 6.48(1) 8.49(0.8) 3.054(0.6) Kamotoite-(Y) (Y,Nd,Gd)2U++++++4(CO3)3·14,5(H2O) 6.5(1) 3.86(0.9) 2.61(0.7) Nesquehonite Mg(HCO3)(OH)·2(H2O) 6.5(1) 4.36(0.8) 6.3(0.5) Macdonaldite BaCa4[Si16O36(OH)2]·10(H2O) 6.52(1) 2.53(0.8) 2.9(0.6) Murunskite K2Cu3FeS4 6.52(1) 3.255(0.4) 4.05(0.4) Woolridgeite ! Na2CaCu++2(P2O7)2·10(H2O) 6.52(1) 6.03(0.8) 3.005(0.5) Liroconite Cu2Al(AsO4)(OH)4·4(H2O) 6.525(1) 3.539(0.8) 4.387(0.6) Delrioite CaSrV2O6(OH)2·3(H2O) 6.53(1) 9.93(0.95) 4.24(0.55) Stercorite H(NH4)Na(PO4)·4(H2O) 6.539(1) 3.169(0.9) 7.04(0.8) Wheatleyite Na2Cu(C2O4)2·2(H2O) 6.54(1) 3.27(0.5) 4.78(0.4) Calkinsite-(Ce) (Ce,La)2(CO3)3·4(H2O) 6.55(1) 3.42(0.8) 3.23(0.7) Tombarthite-(Y) Y4(Si,H4)4O12-x(OH)4+2x 6.55(1) 4.39(0.45) 5.9(0.35) Rhodesite KHCa2Si8O19·5(H2O) 6.56(1) 3.12(0.7) 3.53(0.5) Carnotite K2(UO2)2V2O8·3(H2O) 6.57(1) 3.283(0.55) 4(0.5) Montroyalite Sr4Al8(CO3)3(OH,F)26·10-11(H2O) 6.57(1) 5.135(0.3) 6.97(0.25) Tunellite SrB6O9(OH)2·3(H2O) 6.58(1) 2.98(0.3) 3.18(0.26) Annabergite Ni3(AsO4)2·8(H2O) 6.624(1) 2.922(0.72) 4.818(0.61) Arupite (Ni,Fe++)3(PO4)2·8(H2O) 6.66(1) 2.72(0.7) 3.14(0.5) Hydrozincite Zn5(CO3)2(OH)6 6.68(1) 5.91(0.8) 3.006(0.7) Tinsleyite KAl2(PO4)2(OH)·2(H2O) 6.692(1) 2.712(0.5) 3.005(0.5) Hornesite Mg3(AsO4)2·8(H2O) 6.7(1) 3.68(0.8) 3.72(0.8) Gebhardite Pb8(As+++2O5)2OCl6 6.7(1) 8.61(0.8) 4.16(0.6) Bijvoetite-(Y) (Y,REE)8(H2O)25(UO2)16O8(OH)8(CO3)16·14(H2O) 6.703(1) 3.224(0.35) 7.954(0.27) Kottigite Zn3(AsO4)2·8(H2O) 6.71(1) 2.699(0.7) 2.956(0.6) Baricite (Mg,Fe++)3(PO4)2·8(H2O) 6.71(1) 3.356(0.92) 5.36(0.85) Hungchaoite MgB4O5(OH)4·7(H2O) 6.71(1) 4.86(0.4) 8.59(0.4) Metavivianite (Fe++3-x,Fe+++x)(PO4)2(OH)x·8-x(H2O), x=0.5 6.72(1) 3.003(0.47) 3.227(0.42) Erythrite Co3(AsO4)2·8(H2O) 6.73(1) 3.72(0.9) 4.16(0.6) Astrocyanite-(Ce) Cu+2(Ce,REE,Ca,Y)2(UO2)(CO3)5(OH)2·3(H2O) 6.75(1) 3.025(0.5) 8.057(0.3) Parasymplesite Fe++3(AsO4)2·8(H2O) 6.78(1) 2.61(0.8) 3.68(0.7) Aurichalcite (Zn,Cu)5(CO3)2(OH)6 6.79(1) 3.061(0.7) 5.99(0.7) Leucophosphite KFe+++2(PO4)2(OH)·2(H2O) 6.79(1) 3.39(0.31) 5.18(0.09) Nobleite CaB6O9(OH)2·3(H2O) 6.79(1) 5.99(0.9) 3.05(0.45) Spheniscidite (NH4,K)(Fe+++,Al)2(PO4)2(OH)·2(H2O) 6.79(1) 7.5(0.16) 8.97(0.16) Symplesite Fe++3(AsO4)2·8(H2O) 6.8(1) 2.71(0.67) 2.97(0.67) Vivianite Fe++3(PO4)2·8(H2O) 6.81(1) 2.239(0.8) 5.083(0.8) Paraotwayite Ni(OH)2-x(SO4,CO3)0.5x x=.5 6.81(1) 2.849(0.9) 2.983(0.8) Rouseite Pb2Mn++(As+++O3)2·2(H2O) 6.81(1) 3.4(0.9) 2.95(0.8) Boltwoodite HK(UO2)(SiO4)·1.5(H2O) 6.81(1) 5.4(0.9) 8.68(0.9) Liebigite Ca2(UO2)(CO3)3·11(H2O) 6.83(1) 4.33(0.98) 2.704(0.51) Gravegliaite Mn++(SO3)·3(H2O) 6.84(1) 2.219(0.3) 4.01(0.2) Ernienickelite NiMn++++3O7·3(H2O) 6.84(1) 5.67(0.8) 2.737(0.6) Otwayite Ni2(CO3)(OH)2·(H2O) 6.87(1) 2.707(0.8) 2.758(0.8) Gageite (Mn,Mg,Zn)42Si16O54(OH)40 6.87(1) 2.707(0.8) 2.758(0.8) Gageite-2M ! (Mn,Mg,Zn)42Si16O54(OH)40 6.9(1) 2.18(0.65) 3.61(0.65) Minguzzite K3Fe+++(C2O4)3·3(H2O) 6.9(1) 3.38(0.8) 11.6(0.8) Zorite Na6Ti5[Si12O34](O,OH)5·11(H2O) 6.909(1) 8.898(0.4) 3.926(0.3) Metakottigite (Zn,Fe+++,Fe++)3(AsO4)2·8((H2O),OH) 6.91(1) 2.31(0.8) 2.624(0.8) Gerhardtite Cu2(NO3)(OH)3 6.91(1) 3.457(0.9) 2.462(0.8) IMA1999-010 ! Cu2(NO3)(OH)3 6.917(1) 2.843(0.8) 3.777(0.7) Seamanite Mn3(PO4)B(OH)6 6.92(1) 3.447(0.8) 2.376(0.35) Manandonite Li2Al4[(Si2AlB)O10](OH)8 6.92(1) 4.15(0.8) 3.68(0.7) Chalconatronite Na2Cu(CO3)2·3(H2O) 6.93(1) 3.32(0.9) 4.38(0.6) Caysichite-(Y) Y2(Ca,Gd)2Si4O10(CO3)3(H2O,O,OH)·3H20 6.931(1) 3.079(0.38) 3.091(0.38) Ezcurrite Na4B10O17·7(H2O) 6.935(1) 5.342(0.71) 4.556(0.41) Erdite NaFeS2·2(H2O) 6.94(1) 3.46(0.7) 4.06(0.5) Aurorite (Mn,Ag,Ca)Mn++++3O7·3(H2O) 6.94(1) 3.47(0.3) 2.7(0.25) Posnjakite Cu4(SO4)(OH)6·(H2O) 6.95(1) 3.31(0.8) 4.23(0.6) Bearsite Be2(AsO4)(OH)·4(H2O) 6.96(1) 2.94(0.27) 8.04(0.18) Bobierrite Mg3(PO4)2·8(H2O) 6.96(1) 3.21(0.7) 4.6(0.6) Uranotungstite (Fe++,Ba,Pb)(UO2)2WO4(OH)4·12(H2O) 6.96(1) 3.26(0.4) 3.31(0.4) Hydrotungstite H2WO4·(H2O) 6.96(1) 3.46(0.75) 5.15(0.3) Hannayite (NH4)2Mg3H4(PO4)4·8(H2O) 6.96(1) 3.5(0.6) 4.08(0.5) Chalcophanite (Zn,Fe++,Mn++)Mn++++3O7·3(H2O) 6.965(1) 2.23(0.23) 3.483(0.11) Jianshuiite (Mg,Mn++)Mn++++3O7·3(H2O) 6.965(1) 3.344(0.7) 3.6(0.7) Margaritasite (Cs,K,H3O)2(UO2)2V2O8·(H2O) 6.98(1) 5.85(0.5) 8.81(0.5) Metahaiweeite Ca(UO2)2Si6O15·n(H2O), n<5 6.99(1) 3.705(0.89) 10.5(0.57) Swaknoite (NH4)2Ca(HPO4)2·(H2O) 6.999(1) 7.189(0.99) 2.995(0.73) Elyite Pb4Cu(SO4)O2(OH)4·(H2O) 7(1) 3.278(0.9) 4.24(0.6) Moraesite Be2(PO4)(OH)·4(H2O) 7.01(1) 8.19(0.8) 3.02(0.7) Manganese-hornesite (Mn,Mg)3(AsO4)2·8(H2O) 7.03(1) 3.52(0.7) 2.65(0.4) Fraipontite (Zn,Al)3(Si,Al)2O5(OH)4 7.04(1) 2.99(0.9) 3.54(0.8) Pentahydroborite CaB2O(OH)6·2(H2O) 7.04(1) 3.003(0.84) 3.152(0.8) Santaclaraite CaMn++4Si5O14(OH)2·(H2O) 7.06(1) 3.12(0.9) 3.51(0.8) Zippeite K4(UO2)6(SO4)3(OH)10·4(H2O) 7.07(1) 3.54(0.81) 2.48(0.18) Brindleyite (Ni,Mg,Fe++)2Al(SiAl)O5(OH)4 7.08(1) 3.52(0.7) 3.12(0.5) Masuyite Pb[(UO2)3O3(OH)2]·3(H2O) 7.08(1) 3.54(0.5) 3.44(0.4) Zinc-zippeite Zn++2(UO2)6(SO4)3(OH)10·16(H2O) 7.09(1) 2.516(0.75) 2.694(0.3) Ramsbeckite (Cu,Zn)15(SO4)4(OH)22·6(H2O) 7.099(1) 7.148(0.97) 6.568(0.65) Nenadkevichite (Na,Ca,K)(Nb,Ti)Si2O6(O,OH)·2(H2O) 7.1(1) 2.33(0.8) 3.55(0.7) Orthochrysotile Mg3Si2O5(OH)4 7.1(1) 2.43(0.8) 3.57(0.8) Pennantite Mn5Al(Si3Al)O10(OH)8 7.1(1) 2.52(0.9) 14.2(0.9) Orthochamosite (Fe++,Mg,Fe+++)5Al(Si3Al)O10(OH,O)8 7.1(1) 2.977(0.7) 3.55(0.5) Mandarinoite Fe+++2Se3O9·6(H2O) 7.1(1) 3.55(0.45) 14.2(0.25) Nimite (Ni,Mg,Fe++)5Al(Si3Al)O10(OH)8 7.1(1) 3.59(0.8) 2.54(0.7) Spangolite Cu6Al(SO4)(OH)12Cl·3(H2O) 7.11(1) 5.57(0.9) 8.98(0.8) Weeksite K2(UO2)2Si6O15·4(H2O) 7.12(1) 2.379(0.9) 3.56(0.8) Lizardite Mg3Si2O5(OH)4 7.12(1) 3.546(1) 2.52(1) Berthierine (Fe++,Fe+++,Al,Mg)2-3(Si,Al)2O5(OH)4 7.12(1) 4.28(0.8) 9.18(0.8) Uranopilite (UO2)6(SO4)(OH)10·12(H2O) 7.129(1) 3.56(0.8) 2.427(0.6) Dozyite (Mg7Al2)(Si4Al2)O15(OH)12 7.14(1) 5.36(0.3) 3.27(0.2) Ginorite Ca2B14O23·8(H2O) 7.14(1) 14.3(0.9) 1.542(0.6) Baileychlore (Zn,Al,[ ])3[Fe++2Al][Si3AlO10](OH)8 7.15(1) 3.219(0.5) 3.836(0.35) Euclase BeAlSiO4(OH) 7.15(1) 3.58(0.85) 1.552(0.65) Odinite (Fe+++,Mg,Al,Fe++,Ti,Mn)2.5(Si,Al)2O5(OH)4 7.15(1) 3.581(0.7) 2.628(0.35) Wroewolfeite Cu4(SO4)(OH)6·2(H2O) 7.16(1) 2.683(0.9) 3.583(0.8) Manganpyrosmalite (Mn,Fe++)8Si6O15(OH,Cl)10 7.16(1) 2.77(0.9) 3.18(0.8) Tuhualite [ ](Na,K)Fe++Fe+++[Si6O15] 7.16(1) 4.77(0.7) 3.58(0.6) Clinochlore (Mg,Fe++)5Al(Si3Al)O10(OH)8 7.17(1) 1.49(0.9) 3.58(0.8) Kaolinite Al2Si2O5(OH)4 7.17(1) 3.397(0.55) 3.595(0.45) Carlosturanite (Mg,Fe++,Ti,Mn)21(Si,Al)12O28(OH)34 7.186(1) 2.527(0.8) 2.7(0.8) Schulenbergite (Cu,Zn)7(SO4,CO3)2(OH)10·3(H2O) 7.187(1) 3.593(0.53) 4.383(0.39) Nacrite Al2Si2O5(OH)4 7.19(1) 2.87(0.8) 5.74(0.8) Eudialyte Na4(Ca,Ce)2(Fe++,Mn,Y)ZrSi8O22(OH,Cl)2 (?) 7.2(1) 3.18(0.5) 3.58(0.5) Fourmarierite Pb(UO2)4O3(OH)4·4(H2O) 7.2(1) 4.09(0.9) 3.29(0.8) Strontioborite SrB8O11(OH)4 7.2(1) 4.84(0.9) 2.458(0.8) Urusovite Cu[AlAsO5] 7.21(1) 3.59(0.45) 3.12(0.3) Cobalt-zippeite Co++2(UO2)6(SO4)3(OH)10·16(H2O) 7.22(1) 4.9(0.85) 4.21(0.8) Kurnakovite MgB3O3(OH)5·5(H2O) 7.23(1) 3.61(0.8) 4.79(0.5) Gonyerite Mn++3[Mn++3Fe+++][(Si,Fe+++)4O10](OH,O)8 7.25(1) 2.1(0.8) 5.4(0.6) Strontioginorite (Sr,Ca)2B14O23·8(H2O) 7.25(1) 3.619(0.25) 2.451(0.2) Takanelite (Mn++,Ca)Mn++++4O8·(H2O) 7.26(1) 2.56(0.8) 2.87(0.8) Volborthite Cu++3V+++++2O7(OH)2·2(H2O) 7.26(1) 4.796(0.8) 8.48(0.7) Schrockingerite NaCa3(UO2)(CO3)3(SO4)F·10(H2O) 7.27(1) 1.41(0.7) 2.44(0.7) Birnessite (Na,Ca,K)x(Mn++++,Mn+++)2O4·1.5(H2O) 7.27(1) 4.17(0.7) 8.17(0.3) Thornasite Na12Th3[Si8O19]4·18(H2O) 7.28(1) 2.238(0.8) 3.84(0.8) Nifontovite Ca3B6O6(OH)12·2(H2O) 7.28(1) 5.08(0.7) 3.44(0.25) Schoepite (UO2)8O2(OH)12·12(H2O) 7.29(1) 2.958(0.3) 8.65(0.3) Penobsquisite Ca2Fe++[B9O13(OH)6]Cl·4(H2O) 7.29(1) 8.39(1) 3.55(0.8) Guilleminite Ba(UO2)3(SeO3)2O2·3(H2O) 7.3(1) 2.51(0.9) 2.81(0.7) Bementite Mn8Si6O15(OH)10 7.3(1) 2.51(0.9) 2.81(0.7) Caryopilite (Mn++,Mg,Zn,Fe++)3(Si,As)2O510(OH,Cl)4 7.3(1) 6.19(0.9) 11.58(0.9) Uranosilite (U++++++O2)Si7O15 7.31(1) 3.63(0.9) 2.501(0.7) Nepouite Ni3Si2O5(OH)4 7.314(1) 3.652(0.2) 2.367(0.16) Nakauriite (Mn,Ni,Cu)8(SO4)4(CO3)(OH)6·48(H2O) 7.32(1) 3.65(0.7) 4.57(0.5) Chrysotile Mg3Si2O5(OH)4 7.34(1) 3.66(0.55) 3.49(0.45) Sodium-zippeite Na4(UO2)6(SO4)3(OH)10·4(H2O) 7.35(1) 3.936(0.6) 4.44(0.6) Yvonite ! Cu(AsO3OH)·2(H2O) 7.37(1) 2.556(0.5) 3.282(0.3) Bechererite (Zn,Cu)6Zn2(OH)13[(S,Si)(O,OH)4]2 7.372(1) 3.08(0.86) 7.771(0.83) Kainite MgSO4·KCl·3(H2O) 7.4(1) 2.29(0.6) 3.33(0.5) Ferrimolybdite Fe+++2(MoO4)3·8(H2O) 7.4(1) 3.19(0.8) 3.53(0.8) Compreignacite K2(UO2)6O4(OH)6·8(H2O) 7.4(1) 6.64(0.85) 3.25(0.35) Kernite Na2B4O6(OH)2·3(H2O) 7.43(1) 1.529(0.8) 3.66(0.8) Pecoraite Ni3Si2O5(OH)4 7.43(1) 9.5(1) 3.96(0.4) Karpatite C24H12 7.44(1) 3.2(0.35) 3.73(0.3) Becquerelite Ca(UO2)6O4(OH)6·8(H2O) 7.46(1) 3.07(0.9) 2.548(0.8) Aldzhanite * CaMgB2O4Cl·7(H2O) (?) 7.49(1) 3.746(0.5) 2.625(0.4) Caresite Fe++4Al2(OH)12CO3·3(H2O) 7.5(1) 2.481(0.8) 3.02(0.6) Calumetite Cu(OH,Cl)2·2(H2O) 7.5(1) 2.621(0.5) 3.63(0.5) Sclarite (Zn,Mg,Mn++)4Zn3(CO3)2(OH)10 7.5(1) 14.9(0.6) 11.1(0.4) Metaschoderite Al2(PO4)(VO4)·6(H2O) 7.51(1) IMA1997-019 Zn4Al2(OH)12(CO3)·3(H2O) 7.512(1) 3.266(0.91) 3.528(0.9) Fluckite CaMn(HAsO4)2·2(H2O) 7.52(1) 2.552(0.8) 3.77(0.8) Takovite Ni6Al2(OH)16(CO3,OH)·4(H2O) 7.53(1) 3.768(0.6) 2.578(0.5) Charmarite-2H Mn++4Al2(CO3)(OH)12·3(H2O) 7.55(1) 3.77(0.9) 2.67(0.7) Charmarite-3T Mn++4Al2(CO3)(OH)12·3(H2O) 7.56(1) 2.99(0.9) 4.48(0.7) Parahopeite Zn3(PO4)2·4(H2O) 7.56(1) 3.183(0.35) 3.78(0.25) Billietite Ba(UO2)6O4(OH)6·8(H2O) 7.56(1) 3.77(0.2) 2.46(0.12) Rancieite (Ca,Mn++)Mn++++4O9·3(H2O) 7.56(1) 7.13(0.48) 3.771(0.34) Jachymovite (UO2)8(SO4)(OH)14·13(H2O) 7.57(1) 3.778(0.9) 2.57(0.4) Quintinite-3T Mg4Al2(OH)12CO3·4(H2O) 7.59(1) 14.2(1) 2.95(0.66) Rivadavite Na6MgB24O40·22(H2O) 7.6(1) 2.68(0.9) 12.08(0.9) Admontite MgB6O10·7(H2O) 7.61(1) 2.745(0.6) 3.96(0.5) Cianciulliite Mn++++(Mg,Mn++)2Zn2(OH)10·2-4(H2O) 7.61(1) 3.807(0.23) 2.918(0.12) Sophiite Zn2(SeO3)Cl2 7.62(1) 3.8(0.3) 1.9(0.1) Brushite CaHPO4·2(H2O) 7.62(1) 10.59(0.9) 9.12(0.6) Huemulite Na4Mg(V10O28)·24(H2O) 7.62(1) 11.6(1) 6.82(0.7) Zapatalite Cu3Al4(PO4)3(OH)9·4(H2O) 7.62(1) 14.62(1) 3.49(0.9) Arsenuranospathite HAl(UO2)4(AsO4)4·40(H2O) 7.63(1) 2.6(0.81) 3.8(0.73) Reevesite Ni6Fe+++2(CO3)(OH)16·4(H2O) 7.63(1) 3.24(0.8) 3.81(0.8) Ianthinite (UO2)·5(UO3)·10(H2O) 7.63(1) 3.353(0.6) 3.818(0.6) Suzukiite BaVO(SiO3)2 7.64(1) 2.567(0.7) 3.808(0.5) Comblainite (Ni++x,Co+++1-x)(OH)2(CO3)(1-x)/2·y(H2O) 7.66(1) 13.1(0.9) 3.83(0.6) Bayleyite Mg2(UO2)(CO3)3·18(H2O) 7.67(1) 1.84(0.6) 2.6(0.5) Manasseite Mg6Al2(CO3)(OH)16·4(H2O) 7.68(1) 3.95(0.8) 4.08(0.6) Strelkinite Na2(UO2)2V2O8·6(H2O) 7.69(1) 3.88(0.7) 2.58(0.2) Hydrotalcite Mg6Al2(CO3)(OH)16·4(H2O) 7.69(1) 9.21(0.7) 5.74(0.6) Pringleite Ca9B26O34(OH)24Cl4·13(H2O) 7.73(1) 3.118(0.9) 3.37(0.9) Hexahydroborite Ca[B(OH)4]2·2(H2O) 7.73(1) 3.837(0.8) 3.054(0.6) Bergenite (Ba,Ca)2(UO2)3(PO4)2(OH)4·5.5(H2O) 7.73(1) 6.16(0.9) 3.41(0.8) Johannite Cu(UO2)2(SO4)2(OH)2·8(H2O) 7.736(1) 7.824(1) 2.754(0.6) Barium-zinc-alumopharmacosiderite * (Ba,K)0.5(Zn,Cu)0.5(Al,Fe)4(AsO4)3·5(H2O) 7.74(1) 2.579(0.19) 3.037(0.13) Aristarainite Na2MgB12O20·8(H2O) 7.74(1) 3.93(0.5) 3.34(0.45) Ardealite Ca2(SO4)(HPO4)·4(H2O) 7.76(1) 2.332(0.6) 3.88(0.6) Desautelsite Mg6Mn+++2(CO3)(OH)16·4(H2O) 7.76(1) 3.501(0.65) 2.591(0.41) Kamchatkite KCu++3OCl(SO4)2 7.76(1) 8.41(0.7) 3.9(0.6) Calcurmolite Ca(UO2)3(MoO4)3(OH)2·11(H2O) 7.77(1) 2.739(0.6) 4.48(0.5) Alumopharmacosiderite KAl4(AsO4)3(OH)4·6·5(H2O) 7.77(1) 3.89(0.8) 2.62(0.5) Pyroaurite Mg6Fe+++2(CO3)(OH)16·4(H2O) 7.78(1) 2.592(0.6) 1.53(0.5) Jamborite (Ni++,Ni+++,Fe)(OH)2(OH,S,(H2O)) 7.78(1) 3.11(0.8) 4.31(0.7) Rapidcreekite Ca2(SO4)(CO3)·4(H2O) 7.78(1) 3.49(0.8) 8.97(0.7) Bulachite Al2(AsO4)(OH)3·3(H2O) 7.78(1) 3.814(0.8) 4.391(0.8) IMA2000-050 ! KCdCu7O2(SeO3)2Cl9 7.79(1) 3.88(0.5) 5.76(0.5) Francoisite-(Nd) (Nd,Y,Sm,Ce)(UO2)3(PO4)2O(OH)·6(H2O) 7.79(1) 3.89(0.8) 1.86(0.4) Sjogrenite Mg6Fe++2(CO3)(OH)14·5(H2O) 7.8(1) 2.73(0.8) 3.16(0.7) Barium-alumopharmacosiderite * BaAl4(AsO4)3(OH)5·5(H2O) 7.8(1) 2.91(0.8) 4.38(0.6) Ferrinatrite Na3Fe+++(SO4)3·3(H2O) 7.8(1) 3.37(0.7) 3.87(0.6) Mundite Al(UO2)3(PO4)2(OH)3·5(H2O) 7.8(1) 3.87(0.8) 3.15(0.7) Triangulite Al3(UO2)4(PO4)4(OH)5·5(H2O) 7.8(1) 3.91(0.9) 2.6(0.4) Stichtite Mg6Cr2(CO3)(OH)16·4(H2O) 7.81(1) 2.49(0.9) 3.57(0.6) Fluorapophyllite (K,Na)Ca4Si8O20(F,OH)·8(H2O) 7.83(1) 3.07(0.7) 3.26(0.7) Geminite Cu++2As+++++2O7·3(H2O) 7.83(1) 3.9(0.9) 3.51(0.6) Uranophane-beta Ca(UO2)2SiO3(OH)2·5(H2O) 7.851(1) 3.2973(0.9) 2.6847(0.8) Munirite NaVO3·(2-x)(H2O) 7.86(1) 2.56(0.8) 1.91(0.7) Cafetite Ca(Fe+++,Al)2Ti4O12·4(H2O) 7.86(1) 3.93(0.6) 2.89(0.5) Hydrocalumite Ca2Al(OH)6[Cl1-x(OH)x]·3(H2O) 7.87(1) 2.672(0.6) 2.725(0.5) Simonkolleite Zn5(OH)8Cl2·(H2O) 7.88(1) 3.94(0.9) 2.99(0.8) Uranophane Ca(UO2)2SiO3(OH)2·5(H2O) 7.88(1) 15.44(1) 2.714(0.4) Brianyoungite Zn3(CO3,SO4)(OH)4 7.89(1) 3.94(0.5) 3.15(0.29) Yingjiangite (K2,Ca)(UO2)7(PO4)4(OH)6·6(H2O) 7.9(1) 2.64(0.32) 6.2(0.3) Para-alumohydrocalcite CaAl2(CO3)2(OH)4·6(H2O) 7.9(1) 3.12(0.7) 3.45(0.35) Barnesite Na2V6O16·3(H2O) 7.9(1) 3.16(0.9) 3.83(0.7) Koritnigite Zn(AsO3OH)·(H2O) 7.9(1) 3.38(0.8) 11.9(0.8) Kulkeite Na0.35Mg8AlSi7O20(OH)10 7.9(1) 3.49(0.8) 3.38(0.7) Rabejacite Ca(UO2)4(SO4)2(OH)6·6(H2O) 7.91(1) 3.15(0.6) 3.96(0.6) Phosphuranylite KCa(H3O)3(UO2)7(PO4)4O4·8(H2O) 7.91(1) 3.6(0.8) 3.09(0.6) Dundasite PbAl2(CO3)2(OH)4·(H2O) 7.92(1) 2.095(0.8) 2.755(0.8) Stoiberite Cu5V+++++2O10 7.92(1) 8.69(0.8) 10.4(0.6) Hohmannite Fe+++2(SO4)2(OH)2·7(H2O) 7.93(1) 2.99(1) 2.7(1) Clinoholmquistite [ ](Li2Mg3Al2)Si8O22(OH)2 7.93(1) 3.96(0.9) 2(0.7) Brugnatellite Mg6Fe+++(CO3)(OH)13·4(H2O) 7.93(1) 4.39(0.8) 3.002(0.7) Strontiodresserite (Sr,Ca)Al2(CO3)2(OH)4·(H2O) 7.94(1) 3.14(0.7) 3.82(0.5) Cobaltkoritnigite (Co,Zn)(AsO3OH)·(H2O) 7.94(1) 3.633(0.7) 4.686(0.5) IMA1999-034 ! PbCr+++2(CO3)2(OH)4·H2O 7.95(1) 2.3(0.95) 13.7(0.95) Buttgenbachite Cu19Cl4(NO3)2(OH)32·2(H2O) 7.95(1) 3.11(0.9) 2.88(0.8) Renardite Pb(UO2)4(PO4)2(OH)4·7(H2O) 7.95(1) 3.972(0.8) 3.271(0.4) Kamitugaite PbAl(UO2)5(PO4)2(OH)9·9.5(H2O) 7.96(1) 2.258(0.64) 2.821(0.59) Kovdorskite Mg5(PO4)2(CO3)(OH)2·4.5(H2O) 7.964(1) 6.854(0.5) 6.132(0.25) Cavansite Ca(VO)Si4O10·4(H2O) 7.98(1) 5.32(0.63) 3.19(0.45) IMA2000-032 ! Mg3(PO4)2·22H2O 7.98(1) 11.16(0.7) 4.63(0.5) Wermlandite (Ca,Mg)Mg7(Al,Fe+++)2(SO4)2(OH)18·12(H2O) 7.99(1) 3.27(0.8) 2.831(0.6) Sodium-pharmacosiderite (Na,K)2