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Hoelzel Classification

7 SULFATES CHROMATES MOLYBDATES WOLFRAMATES

7.C Sulfates (-Anions +Water)

7.CD Sulfates, C medium + large

7.CD.1 Alum-Group

Alum-(Na) NaAl(SO4)2·12H2O kubisch Pa3 m3 7.CD.100
Alum-(K) KAl(SO4)2·12H2O kubisch Pa3 m3 7.CD.110
Tschermigite (NH4)Al(SO4)2·12H2O kubisch Pa3 m3 7.CD.120
Lanmuchangite TlAl[SO4]2·12H2O kubisch Pa3 m3 7.CD.130
Lonecreekite (NH4)(Fe3+,Al)(SO4)2·12H2O kubisch Pa3 m3 7.CD.150

7.CD.2 Halotrichite-Group

Pickeringite MgAl2(SO4)4·22H2O monoklin P21/c 2/m 7.CD.200
Dietrichite (Zn,Fe2+,Mn)Al2(SO4)4·22H2O monoklin P21/c 2/m 7.CD.210
Halotrichite Fe2+Al2(SO4)4·22H2O monoklin P21/c 2/m 7.CD.220
Wupatkiite (Co,Mg)Al2[SO4]4·22H2O monoklin P21/c 2/m 7.CD.225
Apjohnite MnAl2(SO4)4·22H2O monoklin P21/c 2/m 7.CD.230
Bílinite Fe2+Fe23+(SO4)4·22H2O monoklin P21/c 2/m 7.CD.240
Redingtonite (Fe2+,Mg,Ni)(Cr,Al)2(SO4)4·22H2O 7.CD.250
Mendozite NaAl(SO4)2·11H2O monoklin C2/c 2/m 7.CD.280
Kalinite KAl(SO4)2·11 H2O monoklin C2/c 2/m 7.CD.285

7.CD.3 Picromerite-Group

Picromerite K2Mg(SO4)2·6H2O monoklin P21/a 2/m 7.CD.300
Boussingaultite (NH4)2Mg(SO4)2·6H2O monoklin P21/a 2/m 7.CD.310
Cyanochroite K2Cu(SO4)·6H2O monoklin P21/c 2/m 7.CD.320
Mohrite (NH4)2Fe2+(SO4)2·6H2O monoklin P21/a 2/m 7.CD.330
Nickelboussingaultite (NH4)2(Ni,Mg)(SO4)2·6H2O 7.CD.340
Amarillite NaFe3+(SO4)2·6H2O monoklin C2/c 2/m 7.CD.370
Tamarugite NaAl(SO4)2·6H2O monoklin P21/a 2/m 7.CD.375

7.CD.4 Konyaite-Group

Konyaite Na2Mg(SO4)2·5H2O monoklin P21/c 2/m 7.CD.400

7.CD.5 Blödite-Group

Blödite Na2Mg(SO4)2·4H2O monoklin P21/a 2/m 7.CD.500
Leonite K2Mg(SO4)2·4H2O monoklin C2/m 2/m 7.CD.510
Mereiterite K2Fe2+[SO4]2·4H2O monoklin C2/m 2/m 7.CD.515
Nickelblödite Na2(Ni,Mg)(SO4)2·4H2O monoklin P21/a 2/m 7.CD.520
Manganoblödite Na2Mn(SO4)2·4H2O monoklin P21/a 2/m 7.CD.530
Goldichite KFe3+(SO4)2·4H2O monoklin P21/c 2/m 7.CD.570

7.CD.6 Voltaite-Group

Voltaite K2Fe52+Fe43+(SO4)12·18 H2O kubisch Fd3c m3m 7.CD.600
Pertlikite K2(Fe2+,Mg)2(Mg,Fe3+)4Fe3+2Al(SO4)12·18H2O tetragonal I41cd 4mm 7.CD.605
Ammoniomagnesiovoltaite (NH4)2Mg5Fe3+3Al(SO4)12·18H2O kubisch Fd3c m3m 7.CD.607
Zincovoltaite K2(Zn,Fe2+,Mn)5Fe33+Al(SO4)12·18H2O kubisch Fd3c m3m 7.CD.610
Metavoltine K2Na6Fe2+Fe63+(SO4)12O2·18 H2O trigonal P3 3 7.CD.620
Löweite Na12Mg7(SO4)13·15H2O trigonal R3 3 7.CD.640

7.CD.7 Kröhnkite-Group

Kröhnkite Na2Cu(SO4)2· 2H2O monoklin P21/c 2/m 7.CD.700
Ferrinatrite Na3Fe(SO4)3·3H2O trigonal P3 3 7.CD.720
Changoite Na2Zn[SO4]2·4H2O monoklin P21/a 2/m 7.CD.730

7.CD.8 Polyhalite-Group

Polyhalite K2Ca2Mg(SO4)4·2H2O triklin F1 1 7.CD.800
Leightonite K2Ca2Cu(SO4)4·2H2O monoklin C2/c 2/m 7.CD.810
Krausite KFe3+(SO4)2·H2O monoklin P21/m 2/m 7.CD.850



Mineralsystematik-Übersicht