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Hoelzel Classification

9 SILICATES

9.C Cyclosilicates

9.CC ~[Si6O18]12--Rings Beryl-Group

9.CC.1 est

Beryl Be3Al2Si6O18 hexagonal P6/mcc 6/mmm 9.CC.100
Stoppaniite Fe3+2Be3Si6O18·H2O hexagonal P6/mcc 6/mmm 9.CC.110
Pezzottaite Cs(Be2Li)Al2Si6O18 trigonal R3c 3m 9.CC.150

9.CC.2

Bazzite Be3(Sc,Al)2Si6O18 hexagonal P6/mcc 6/mmm 9.CC.200

9.CC.3

Cordierite Mg2Al4Si5O18 orthorhombisch Cccm mmm 9.CC.300
Sekaninaite (Fe2+,Mg)2Al4Si5O18 orthorhombisch Cccm mmm 9.CC.320
Indialite Mg2Al4Si5O18 hexagonal P6/mcc 6/mmm 9.CC.360



Mineralsystematik-Übersicht