Home Prehnite
VIII - Phyllosilicates		 Crystal habit of Prehnite
 
Name   Prehnite
Chemistry   CaAl[6][(OH)2|AlSi3O10]
Hardness   6 - 6.5
Lustre   vitreous - pearly
Colour   colourless, grey, yellow, yellow green, white
Streak   white
Density [g/cm3]   2.8 - 3.0
Crystal habit   orthorhombic, crystals rarely
Cleavage, Fracture   [001] distinct, fracture uneven
other characteristics and occurrences   "kidney-like", botryoidal, globular radiating aggregates
   
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 © 2004 Büro für angewandte Mineralogie · Dr. Stephan Rudolph · D-47918 Tönisvorst
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