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Hoelzel Classification

9 SILICATES

9.E Phyllosilicates

9.EI Montmorillonite-Saponite-Group

9.EI.1

Montmorillonite (Na,Ca)0.3(Al,Mg)2Si4O10(OH)2·nH2O monoklin C2/m 2/m 9.EI.100
Hectorite Na0.3(Mg,Li)3Si4O10(F,OH)2 monoklin 9.EI.120
Swinefordite (Ca,Na)0.3(Al,Li,Mg)2(Si,Al)4O10(OH,F)2·2H2O hexagonal 9.EI.130
Wonesite (Na,K,☐)(Mg,Fe,Al)6(Si,Al)8O20(OH,F)4 triklin C1 1 9.EI.160

9.EI.2

Beidellite (Na,Ca0.5)0.3Al2(Si,Al)4O10(OH)2·4H2O orthorhombisch 9.EI.200
Nontronite Na0.3Fe23+(Si,Al)4O10(OH)2·4H2O monoklin 9.EI.220

9.EI.3

Saponite (Ca,Na)0.3(Mg,Fe2+)3(Si,Al)4O10(OH)2·4H2O monoklin 9.EI.300
Ferrosaponite Ca0.3(Fe2+,Mg,Fe3+)3[(OH)2|(Si,Al)Si3O10]·4H2O monoklin 9.EI.310
Stevensite (Ca|2)0.3Mg3Si4O10(OH)2 monoklin 9.EI.320

9.EI.4

Yakhontovite (Ca,Na,K)0.3(CuFe2+Mg)2Si4O10(OH)2·3H2O monoklin 9.EI.400
Volkonskoite Ca0.3(Cr3+,Mg,Fe3+)2(Si,Al)4O10(OH)2·4H2O monoklin 9.EI.440

9.EI.5

Sauconite Na0.3Zn3(Si,Al)4O10(OH)2·4H2O monoklin 9.EI.500
Zincsilite Zn3Si4O10(OH)2·4H2O 9.EI.510
Vermiculite Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4·8H2O monoklin C2/c, C2/m 2/m, 2/m 9.EI.540



Mineralsystematik-Übersicht