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Hoelzel Classification

4 OXIDES

4.G Vanadin, Uranyl Oxides and Hydroxides

4.GB Uranylhydroxides-Hydrates

4.GB.1 Without Cations Schoepite-Group

Paulscherrerite UO2(OH)2 monoklin P2, P21, P2/m, oder P21/m sind möglich 4.GB.100
Metaschoepite (UO2)8O2(OH)12·10H2O orthorhombisch Pbna mmm 4.GB.110
Heisenbergite UO2(OH)2·H2O orthorhombisch P212121, Pna21, Pnma 222, mm2, mmm 4.GB.115
Schoepite [(UO2)8O2(OH)12](H2O)12 orthorhombisch P21ca mm2 4.GB.120
Paraschoepite UO3·2H2O orthorhombisch Pbca mmm 4.GB.130
Metastudtite UO4·2H2O orthorhombisch Immm mmm 4.GB.150
Studtite UO4·4H2O monoklin C2/c 2/m 4.GB.160

4.GB.2 C small Vandenbrandeite-Group

Vandenbrandeite Cu(UO2)(OH)4 triklin P1 1 4.GB.200

4.GB.3 With Alkali Compreignacite-Group

Clarkeite Na(UO2)O(OH)·nH2O trigonal R3m 3m 4.GB.300
Compreignacite K2(UO2)6O4(OH)6·7H2O orthorhombisch Pnmn mmm 4.GB.320
Agrinierite K2Ca[(UO2)3O3(OH)2]2·5H2O orthorhombisch F2mm mm2 4.GB.340
Rameauite K2CaU6+6O20·6H2O monoklin C2/c 2/m 4.GB.360

4.GB.4 With Ca,Sr,Ba Becquerelite-Group

Becquerelite Ca(UO2)6O4(OH)6·8H2O orthorhombisch Pn21a mm2 4.GB.400
Metacalciouranoite (Ca,Na,Ba)U2O7·2H2O 4.GB.410
Calciouranoite (Ca,Ba,Pb)U2O7·5H2O triklin 4.GB.420
Protasite Ba(UO2)3O3(OH)2·3H2O monoklin Pn m 4.GB.450
Billietite Ba(UO2)6O4(OH)6·8H2O orthorhombisch Pbn21 mm2 4.GB.460
Bauranoite BaU2O7·4-5 H2O orthorhombisch 4.GB.470

4.GB.5 With Pb Wölsendorfite-Group

Metavandendriesscheite PbU7O22·nH2O orthorhombisch Pmma, P21ma, Pm2a mmm, mm2, mm2 4.GB.500
Vandendriesscheite Pb1.5(UO2)10O6(OH)11·11H2O orthorhombisch Pbca mmm 4.GB.510
Wölsendorfite Pb7(UO2)14O19(OH)4·12H2O orthorhombisch Cmcm mmm 4.GB.530
Richetite (Fe3+,Mg)xPb2+8.6(UO2)36O36(OH)24·41H2O triklin P1 1 4.GB.540
Curite Pb3[(UO2)4|O4|(OH)3]2 ·2H2O orthorhombisch Pnam mmm 4.GB.560
Masuyite Pb(UO2)3O3(OH)2·3H2O monoklin Pn m 4.GB.570
Sayrite Pb2(UO2)5O6(OH)2·4H2O monoklin P21/c 2/m 4.GB.580
Spriggite Pb3(UO2)6O8(OH)2·3H2O monoklin 2/m 4.GB.585
Fourmarierite Pb(UO2)4O3(OH)4·4H2O orthorhombisch Bb21m mm2 4.GB.590

4.GB.6 With other large cations Uranosphaerite-Group

Uranosphaerite Bi(UO2)O2(OH) monoklin P21/n 2/m 4.GB.600
Ianthinite U4+2(UO2)4O6(OH)4·9H2O orthorhombisch P21cn mm2 4.GB.650

4.GB.7

Vorlanite (CaU6+)O4 kubisch Fm3m m3m 4.GB.700



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