Home Corundum
IV - Oxides
Crystal habit of Corundum Corundum

Name   Corundum
Chemistry   Al2O3
Hardness   9
Lustre   adamantine
Colour   in all colours, often bluish, reddish, colourless
Streak   white 
Density [g/cm3]   3.9 - 4.1
Crystal habit   trigonal, crystals barrel shaped, twins [1011]
Cleavage, Fracture   fracture conchoidal
other characteristics and occurrences   in pegmatites and schists, placer deposits
ruby     = red
sapphire = blue and other colours

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