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Hoelzel Classification

4 OXIDES

4.D Dioxides

4.DK Other Niobates, Tantalates

4.DK.1 Cervantite-Group
Cervantite Sb3+Sb5+O4 orthorhombisch Pna21 mm2 4.DK.100
Clinocervantite Sb3+Sb5+O4 monoklin C2/c 2/m 4.DK.105
Stibiocolumbite SbNbO4 orthorhombisch Pc21n mm2 4.DK.110
Stibiotantalite Sb3+TaO4 orthorhombisch Pc21n mm2 4.DK.120
Bismutotantalite Bi(Ta,Nb)O4 orthorhombisch Pcnn mmm 4.DK.130
Bismutocolumbite Bi(Nb,Ta)O4 orthorhombisch Pcnn mmm 4.DK.140
Rosiaite PbSb2O6 trigonal P31m 3m 4.DK.150
Alumotantite AlTaO4 orthorhombisch Pbcn mmm 4.DK.160
Simpsonite Al4Ta3O13(OH) trigonal P3 3 4.DK.180
Bahianite Al5Sb5+3O14(OH)2 monoklin C2/m 2/m 4.DK.190

4.DK.2 Foordit-Group
Foordite Sn2+(Nb,Ta)2O6 monoklin C2/c 2/m 4.DK.200
Thoreaulite Sn2+Ta2O6 monoklin C2/c 2/m 4.DK.210

4.DK.3 Natrotantite-Group
Natrotantite Na2Ta4O11 trigonal R3c 3m 4.DK.300
Ingersonite Ca3Mn2+Sb45+O14 hexagonal (trigonal) 4.DK.310
Rankamaite (Na,K)3(Ta,Nb,Al)11(O,OH)31 orthorhombisch C222 222 4.DK.320
Sosedkoite (K,Na)5Al2(Ta,Nb)22O60 orthorhombisch Cmmm mmm 4.DK.330



Mineralsystematik-Übersicht