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Hoelzel Classification

9 SILICATES

9.F Tektosilicates

9.FE Hexagonal or trigonal with other Anions

9.FE.1 Cancrinite-Group - hexagonal, axis for a~~12A and c~~5A

Cancrinite Na6Ca2Al6Si6O24(CO3)2 hexagonal P63 6 9.FE.100
Balliranoite (Na,K)6Ca2(Si6Al6O24)Cl2(CO3) hexagonal P63 6 9.FE.105
Davyne [(Na,K)6(SO4)0.5Cl][Ca2Cl2][(Si6Al6O24)] hexagonal P63 6 9.FE.110
Vishnevite Na8(Al6Si6)O24(SO4)·2H2O hexagonal P63 6 9.FE.120
Cancrisilite Na7Al5Si7O24(CO3)·3H2O hexagonal P63mc 6mm 9.FE.140
Hydroxycancrinite (Na,Ca,K)8(Al6Si6O24)(OH,CO3)2·2H2O hexagonal P63 6 9.FE.160
Depmeierite Na8[Al6Si6O24](PO4,CO3)1-x·3H2O {x < 0.5} hexagonal P63 6 9.FE.180
Kyanoxalite Na7(Al5-6Si6-7O24)(C2O4)0.5-1.0·5H2O hexagonal P63 6 9.FE.190

9.FE.2 Liottite-Group - hexagonal, axis for a~~12A and c=n*~~5A, n>1

Liottite (Na,K)16Ca8(Al6Si6O24)3(SO4)5Cl4 hexagonal P6 3m 9.FE.210
Tounkite (Na+3.89–5.18K+0.15–1.64Ca2+2.30–2.58(Al6Si6O24)(SO42−,S52−,S4)2−x (Cl, HS)1+y·nH2O (x, y, n < 1)
Formel abgeändert nach Untersuchungen am Typmaterial und weiteren Proben, siehe Nikita V. Chukanov, Nadezhda B. Bolotina, Roman Yu. Shendrik, Anatoly N. Sapozhnikov, Natalia V. Zubkova, Igor V. Pekov, Marina F. Vigasina, Fedor D. Sandalov, Dmitry A. Ksenofontov: Crystal Chemistry and Refined Formula of Tounkite. Minerals Vol. 14, Nr. 4 (2024) Art.-Nr. 382.
trigonal P321 32 9.FE.230
Farneseite (Na37K9Ca10)(Si42Al42)O168(SO4)12·6H2O hexagonal P63/m 6/m 9.FE.240
Sacrofanite (Na,Ca,K)9(Si,Al)12O24[(OH)2,(SO4),(CO3),Cl2)]3·0.5 H2O hexagonal P62c 6m2 9.FE.270

9.FE.3 Microsommite-Group - hexagonal, axis for a~~23A and c~~5A

Microsommite (Na,Ca,K)7-8(Si,Al)12O24(Cl,SO4,CO3)2-3 hexagonal P63 6 9.FE.300
Pitiglianoite Na6K2Si6Al6O24(SO4)·2H2O hexagonal P63 6 9.FE.320
Quadridavyne (Na,K)6Ca2(Cl4)(Al6Si6O24) hexagonal P63/m 6/m 9.FE.360

9.FE.4 Wenkite-Group - hexagonal, other axis for a and c

Wenkite Ba4Ca6(Si,Al)20O41(OH)2(SO4)3·H2O hexagonal P62m 6m2 9.FE.400

9.FE.6 Afghanite-Group - trigonal, axis a~~12A and c=n*~~5A, n=1-5

Bystrite Na7Ca(Al6Si6O24)S2-5Cl- trigonal P31c 3m 9.FE.600
Carbobystrite Na8[Al6Si6O24](CO3)·4H2O trigonal P31c 3m 9.FE.610
Afghanite (Na15K5Ca11)(Si24Al24O96)(SO4)6Cl6 trigonal P31c 3m 9.FE.630
Alloriite (Na,K,Ca)24(Na,Ca)4Ca4(Si,Al)48O96(SO4)4(SO3,CO3)2(OH,Cl)2(H2O,OH)4 trigonal P31c 3m 9.FE.640
Franzinite (Na,K)6Ca2[(SO4)2|Al6Si6O24]·0.5H2O trigonal P321 32 9.FE.650

9.FE.7 Giuseppettite-Group - trigonal, axis a~~12A and c=n*~~5A, n>5

Marinellite (Na,K,Ca)48[Cl2|(SO4)8|(Al6Si6O24)6]·3H20 trigonal P31c 3m 9.FE.700
Giuseppettite Na42K16Ca6Si48Al48O192(SO4)10Cl2·5H2O trigonal P31c 3m 9.FE.730
Biachellaite (Na,Ca,K)8(Si6Al6O24)(SO4)2(OH)0.5·H2O trigonal P3 3 9.FE.760
Fantappièite [Na82.5Ca33K16.5](Si99Al99O396)(SO4)33·4H2O trigonal P3 3 9.FE.770
Kircherite [Na90Ca36K18](Si108Al108O432)(SO4)36·6H2O trigonal R32 32 9.FE.780



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