Home Gahnite
IV - Oxides (Spinel Group)		 Crystal habit of Gahnite Gahnite
 
Name   Gahnite
Chemistry   ZnAl2O4
Hardness   8
Lustre   vitreous
Colour   dark green, bluish green
Streak   grey 
Density [g/cm3]   4.3
Crystal habit   isometric, crystals [111], rarely [100],[110]
Cleavage, Fracture   [111] distinct, fracture conchoidal
other characteristics and occurrences   granular, metamorphic mineral, in contact metamorphic and pegmatitic rocks, with sphalerite (ZnS) and galena (PbS)
   
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 © 2004 Büro für angewandte Mineralogie · Dr. Stephan Rudolph · D-47918 Tönisvorst
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