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Hoelzel Classification

9 SILICATES

9.A Nesosilicates

9.AI Nesosilicates with OH

9.AI.1 C small; Beryllite-Euclase-Topaz-Group
Beryllite Be3SiO4(OH)2·H2O orthorhombisch 9.AI.100
Sphaerobertrandite Be3[(OH)2|SiO4] monoklin P21/c 2/m 9.AI.110
Euclase BeAlSiO4(OH) monoklin P21/c 2/m 9.AI.120
Topaz Al2SiO4(F,OH)2 orthorhombisch Pbnm mmm 9.AI.140
Krieselite (Al,Ga)2(Ge,C)O4(OH)2 orthorhombisch Pnma mmm 9.AI.145
Gerstmannite (Mg,Mn)2ZnSiO4(OH)2 orthorhombisch Bbcm mmm 9.AI.170
Hodgkinsonite Zn2Mn2+SiO4(OH)2 monoklin P21/a 2/m 9.AI.180

9.AI.2 Norbergite-Group
Norbergite Mg3(SiO4)F2 orthorhombisch Pnam mmm 9.AI.200
Ribbeite (Mn2+,Mg)5(SiO4)2(OH)2 orthorhombisch Pnam mmm 9.AI.220
Edgrewite Ca9(SiO4)4F2 monoklin P21/b 2/m 9.AI.225
Hydroxyledgrewite Ca9(SiO4)4(OH)2 monoklin P21/b 2/m 9.AI.226
Humite Mg7(SiO4)3(F,OH)2 orthorhombisch Pbnm mmm 9.AI.240
Manganhumite (Mn,Mg)7(SiO4)3(OH)2 orthorhombisch Pbnm mmm 9.AI.250
Chegemite Ca7(SiO4)3(OH)2 orthorhombisch Pbnm mmm 9.AI.260
Fluorchegemite Ca7(SiO4)3F2 orthorhombisch Pbnm mmm 9.AI.265
Jerrygibbsite Mn9(SiO4)4(OH)2 orthorhombisch Pbn21 mm2 9.AI.270

9.AI.3 Chondrodite-Group
Chondrodite Mg5(SiO4)2F2 monoklin P21/a 2/m 9.AI.310
Hydroxylchondrodite Mg5(SiO4)2(OH)2 monoklin P21/c 2/m 9.AI.315
Alleghanyite Mn5(SiO4)2(OH)2 monoklin P21/a 2/m 9.AI.320
Reinhardbraunsite Ca5(SiO4)2(OH,F)2 monoklin P21/a 2/m 9.AI.330
Kumtyubeite Ca5(SiO4)2F2 monoklin P21/a 2/m 9.AI.335
Leucophoenicite Mn7(SiO4)3(OH)2 monoklin P21/a 2/m 9.AI.350
Clinohumite Mg9(SiO4)4F2 monoklin P21/a 2/m 9.AI.360
Hydroxylclinohumite Mg9(SiO4)4(OH)2 monoklin P21/a 2/m 9.AI.370
Titanclinohumite(Var.v. Clinohumite) 9.AI.375
Sonolite Mn9(SiO4)4(OH,F)2 monoklin P21/a 2/m 9.AI.380

9.AI.4 C small + large without REE's
Vuagnatite CaAlSiO4(OH) orthorhombisch P212121 222 9.AI.400
Mozartite CaMn3+[OH|SiO4] orthorhombisch P212121 222 9.AI.410
Chantalite CaAl2SiO4(OH)4 tetragonal I41/a 4/m 9.AI.430
Cebollite Ca5Al2(SiO4)3(OH)4 9.AI.440
Kittatinnyite Ca2Mn2+Mn3+2(SiO4)2(OH)4·9H2O hexagonal 9.AI.480
Laurentianite Na3Nb3Si4O17·9H2O trigonal P3 3 9.AI.490

9.AI.5 With REE's
Törnebohmite-(Ce) (Ce,La)2Al(SiO4)2(OH) monoklin P21/c 2/m 9.AI.500
Törnebohmite-(La) (La,Ce)2Al(SiO4)2(OH) monoklin P21/c 2/m 9.AI.510
Cerite-(CeCa) (Ce,La,Ca)9(Fe3+,Mg)[(OH)3|SiO3(OH)|(SiO4)6] trigonal R3c 3m 9.AI.530
Aluminocerite-(CeCa) (Ce,REE,Ca)9(Al,Fe3+)(SiO4)3[SiO3(OH)]4(OH)3 trigonal R3c 3m 9.AI.535
Ferricerite-(LaCa) (La,Ce,Ca)9Fe3+(SiO4)3(SiO3OH)4(OH)3 trigonal R3c 3m 9.AI.540
Tombarthite-(Y) Y4(Si,H4)4O12-x(OH)4+2x monoklin P21/n 2/m 9.AI.550
Kuliokite-(Y) (Y,Yb)4Al(SiO4)2(OH)2F5 triklin P1 1 9.AI.570

9.AI.6 C large; Bultfonteinite-Group
Poldervaartite Ca(Ca,Mn)(SiO3OH)(OH) orthorhombisch Pbca mmm 9.AI.600
Olmiite CaMn[SiO3(OH)](OH) orthorhombisch Pbca mmm 9.AI.605
Bultfonteinite Ca2SiO2(OH,F)4 triklin P1 1 9.AI.640
Chesnokovite Na2[SiO2(OH)2]·8H2O 9.AI.660

9.AI.7 With As,Sb,Bi
Chapmanite Fe3+2Sb3+(SiO4)2(OH) monoklin Cm m 9.AI.720
Bismutoferrite BiFe23+(SiO4)2(OH) monoklin Cm m 9.AI.740



Mineralsystematik-Übersicht