Home Chrysoberyl
IV - Oxides		 Crystal habit of Chrysoberyl
 
Name   Chrysoberyl
Chemistry   BeAl2O4
Hardness   8.5
Lustre   vitreous
Colour   yellow, green, brown
Streak   white 
Density [g/cm3]   3.7
Crystal habit   orthorhombic, crystals tabular, prismatic, twins [103] common, cyclic, 120° trilling
Cleavage, Fracture   [010] distinct, fracture conchoidal
other characteristics and occurrences   alexandrite = clear speciems
in granites, pegmatites, mica shists
   
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 © 2004 Büro für angewandte Mineralogie · Dr. Stephan Rudolph · D-47918 Tönisvorst
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