Home Cryolite
III - Halogenides
Crystal habit of Cryolite

Name   Cryolite
Chemistry   Na3AlF6
Hardness   2.5 - 3
Lustre   vitreous - pearly
Colour   colourless, reddish, brownish, black
Streak   white 
Density [g/cm3]   2.9
Crystal habit   monoclinic, crystals pseudocubic
Cleavage, Fracture   fracture uneven
other characteristics and occurrences   often with quartz (SiO2), siderite (FeCO3), pyrite (FeS2), galena (PbS) and chalcopyrite (CuFeS2)

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© 2004 Büro für angewandte Mineralogie · Dr. Stephan Rudolph · D-47918 Tönisvorst
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