| Vicanite-(Ce) | (Ca,Ce,La,Th)15As5+(As3+0.5,Na0.5)Fe3+Si6B4O40F7 |
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| 'Vietinghofite' | (Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8 |
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| 'Vilateite' | FePO4 · 2H2O |
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| Vivianite | Fe2+Fe22+(PO4)2 · 8H2O |
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| Vladykinite | Na3Sr4(Fe2+Fe3+)Si8O24 |
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| Vochtenite | (Fe2+,Mg)Fe3+(UO2)4(PO4)4(OH) · 12-13H2O |
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| Volaschioite | Fe4(SO4)O2(OH)6 · 2H2O |
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| Volkonskoite | Ca0.3(Cr,Mg,Fe)2((Si,Al)4O10)(OH)2 · 4H2O |
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| Voltaite | K2Fe52+Fe33+Al(SO4)12 · 18H2O |
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| Vonsenite | Fe22+Fe3+(BO3)O2 |
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| Voronkovite | Na15(Na,Ca,Ce)3(Mn,Ca)3Fe3Zr3Si26O72(OH,O)4Cl · H2O |
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| Vyalsovite | FeCaAlS(OH)5 |
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| Wadalite | (Ca,Mg)6(Al,Fe3+)4((Si,Al)O4)3O4Cl3 |
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| Wagnerite | (Mg,Fe2+)2(PO4)F |
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| Walentaite | Fe33+(P0.84As0.16O4)2(O,OH)6As3+2.56Ca0.42Na0.28Mn2+0.35Fe2+0.30O6.1(OH)0.9(H2O)0.9 |
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| Walfordite | (Fe3+,Te6+)Te34+O8 |
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| Wallkilldellite-(Fe) | (Ca,Cu)4Fe62+(AsO4,SiO4)4(OH,O)8 · 18H2O |
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| Wangdaodeite | FeTiO3 |
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| Warwickite | (Mg,Ti,Fe,Al)2O(BO3) |
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| 'Washingtonite' | Fe2+(Ti,Fe3+)O3 |
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| Welshite | Ca4Mg9Sb3O4[Si6Be3AlFe2O36] |
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| 'Wenzelite' | (Mn,Mg,Fe)H(PO4) · 2H2O ? |
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| Werdingite | (Mg,Fe)2Al14Si4B4O37 |
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| 'Wermlandite Group' | M7R23+(OH)18[Ca(H2O)6][SO4]2 · 6H2O, where = Mg, Fe, Zn and R= Al or Fe |
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| Wernerkrauseite | Ca(Fe3+,Mn3+)2Mn4+O6 |
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| Whitecapsite | H16Fe52+Fe143+Sb63+(AsO4)18O16 · 120H2O |
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| Whiteite-(CaFeMg) | {Ca}{(Fe2+,Mn2+)}{Mg2}{Al2}(PO4)4(OH)2 · 8H2O |
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| Whiteite-(CaMnFe) | CaMnFe2Al2(PO4)4(OH)2 · 8H2O |
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| Whiteite-(MnFeMg) | {(Mn2+,Ca)}{(Fe2+,Mn2+)}{Mg2}{Al2}(PO4)4(OH)2 · 8H2O |
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| Whitmoreite | Fe2+Fe23+(PO4)2(OH)2 · 4H2O |
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| Wicksite | NaCa2(Fe2+,Mn2+)4MgFe3+(PO4)6 · 2H2O |
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| Wiklundite | Pb2(Mn2+,Zn)3(Fe3+,Mn2+)2(Mn2+,Mg)19(As3+O3)2[(Si,As5+)O4]6(OH)18Cl6 |
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| Wildcatite | CaFe3+Te6+O5(OH) |
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| Wildenauerite | Zn(Fe3+,Mn2+)2MnFe3+(PO4)3(OH)3(H2O)6 · 2H2O |
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| Wilhelmgümbelite | ZnFe2+Fe33+(PO4)3(OH)4(H2O)5 · 2H2O |
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| Wilhelmkleinite | ZnFe23+(AsO4)2(OH)2 |
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| Wilhelmramsayite | Cu3FeS3 · 2H2O |
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| Wilhelmvierlingite | CaMnFe3+(PO4)2(OH) · 2H2O |
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| Wilkinsonite | Na2Fe42+Fe23+(Si6O18)O2 |
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| Windhoekite | Fe3+(Fe3+1.67◻0.33)Ca2◻2Si8O20(OH)2(H2O)4(OH)2 · 6H2O |
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| Windmountainite | ◻Fe23+Mg2◻2Si8O20(OH)2(H2O)4 · 4H2O |
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| Wiperamingaite | NaCaFe3+Al(PO4)F5(OH) · H2O |
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| 'Withamite' | {Ca2}{Al2(Fe3+,Mn)}(Si2O7)(SiO4)O(OH) |
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| 'Wodanite' | K2(Mg,Fe2+,Fe3+,Ti)4-6(Al,Ti,Si)8O20(OH)4 |
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| Wolfeite | Fe22+(PO4)(OH) |
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| 'Wolframoixiolite' | (Nb,W,Ta,Fe,Mn)2O4 |
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| 'Wolframowodginite' | Mn(Mn,Sn,Fe,Ta)(W,Ta,Nb)2O8 |
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| Wonesite | (Na,K)(Mg,Fe,Al)6((Al,Si)4O10)2(OH,F)4 |
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| Wüstite | FeO |
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| Wyllieite | (Na,Ca,Mn)(Mn,Fe)(Fe,Mg)Al(PO4)3 |
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