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Hoelzel Classification

4 OXIDES

4.C R2O3 Sesquioxides

4.CO Pseudopyrochlore-Group

4.CO.1

Zirkelite (Ti,Ca,Zr)O2-x kubisch 4.CO.100
Kassite CaTi2O4(OH)2 monoklin P21/a 2/m 4.CO.110
Cafetite CaTi2O5 ·H2O monoklin P21/n 2/m 4.CO.120
Uhligite Ca3(Ti,Al,Zr)9O20 kubisch 4.CO.130
Zirconolite CaZrTi2O7 4.CO.140
Zirconolite-2M (Ca,Y)Zr(Ti,Mg,Al)2O7 monoklin C2/c 2/m 4.CO.142
Zirconolite-3O (Ca,Fe,Y,Th)2Fe(Ti,Nb)3Zr2O14 orthorhombisch Acam mmm 4.CO.144
Zirconolite-3T CaZrTi2O7 trigonal P3121 32 4.CO.146
Tazheranite (Zr,Ti,Ca)O2 kubisch Fm3m, P43m m3m, 43m 4.CO.160
Calzirtite Ca2Zr5Ti2O16 orthorhombisch Pbca mmm 4.CO.180
Hiärneite Ca2Zr4Mn3+SbTiO16 tetragonal I41/acd 4/mmm 4.CO.185

4.CO.2 Tomichite-Derbylite-Group
Tomichite AsTi3(V,Fe)4O13(OH) monoklin A2/m 2/m 4.CO.200
Graeserite Fe3+4Ti3As3+O13(OH) monoklin A2/m 2/m 4.CO.210
Derbylite (Fe3+,Fe2+,Ti)7Sb3+O13(OH) monoklin P21/m 2/m 4.CO.220
Hemloite (Ti,V3+,Fe3+,Al)12As3+2O23(OH) triklin P1 1 4.CO.260
Batisivite V8Ti6[Ba(Si2O)]O28 triklin P1 1 4.CO.265
Zimbabweite (Na,K)2PbAs43+(Ta,Nb,Ti)4O18 orthorhombisch Ccmb mmm 4.CO.280



Mineralsystematik-Übersicht