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Hoelzel Classification

9 SILICATES

9.A Nesosilicates

9.AH Nesosilicates with O + (OH, OH,X, X)

9.AH.1 C small; Staurolite-Chloritoid-Group
Staurolite (Fe2+,Mg,Zn)2Al9(Si,Al)4O22(OH)2 monoklin C2/m 2/m 9.AH.100
Magnesiostaurolite Mg(Mg,Li)3(Al,Mg)18Si8O44(OH)4 monoklin C2/m 2/m 9.AH.110
Zincostaurolite (Zn,Li,Fe,Mg)<2Al9[(OH)2|(SiO4)4] monoklin C2/m 2/m 9.AH.120
Chloritoid (Fe2+,Mg,Mn)2Al4Si2O10(OH)4 triklin, monoklin 9.AH.14
Chloritoid-2M (Fe2+,Mg,Mn)2Al4Si2O10(OH)4 monoklin C2/c 2/m 9.AH.140
Chloritoid-1A (Fe2+,Mg,Mn)2Al4Si2O10(OH)4 triklin C1 1 9.AH.145
Magnesiochloritoid MgAl2SiO5(OH)2 monoklin C2/c 2/m 9.AH.150
Ottrélite Mn2+Al2O(SiO4)(OH)2 monoklin Cc, C2/c m, 2/m 9.AH.160
Carboirite Fe2+Al2GeO5(OH)2 triklin C1 1 9.AH.180

9.AH.2 Unclassified
Macaulayite (Fe3+,Al)24Si4O43(OH)2 monoklin 9.AH.200
Yoderite (Mg,Al,Fe3+)8Si4(O,OH)20 monoklin P21/m 2/m 9.AH.220

9.AH.4 microporous - Ivanyukite-Group
Ivanyukite-Na Na2[Ti4O2(OH)2(SiO4)3]·6H2O kubisch P43m 43m 9.AH.400
Ivanyukite-K K2[Ti4(OH)2O2(SiO4)3]·9H2O kubisch P43m 43m 9.AH.405
Ivanyukite-Cu Cu[Ti4(OH)2O2(SiO4)3]·7H2O kubisch P43m 43m 9.AH.410
Ivanyukite-Na-T Na3[Ti4(OH)O3(SiO4)3]·7H2O trigonal R3m 3m 9.AH.430

9.AH.5 C large; Asisite-Group
Asisite Pb7SiO8Cl2 tetragonal I4/mmm 4/mmm 9.AH.500
Hereroite [Pb32(O,☐)21](AsO4)2[(Si,As,V,Mo]O4)2Cl10 monoklin C2/c 2/m 9.AH.550
Cayalsite-(Y)-1O CaY6Al2Si4O18F6 orthorhombisch Pban mmm 9.AH.550
Cayalsite-(Y)-1M CaY6Al2Si4O18F6 monoklin P2/c 2/m 9.AH.555



Mineralsystematik-Übersicht