Home Petalite
VIII - Tectosilicates		 Crystal habit of Petalite
 
Name   Petalite
Chemistry   Li[AlSi4O10]
Hardness   6 - 6.5
Lustre   vitreous - pearly
Colour   colourless, grey, yellow, yellow grey, white
Streak   colourless
Density [g/cm3]   2.41
Crystal habit   monoclinic, crystals tabular, columnar, rarely
Cleavage, Fracture    
other characteristics and occurrences   in lithium-bearing pegmatites with spodumene (LiAl[Si2O6]), lepidolite (KLi2Al[(OH,F)2|Si4O10]) and tourmaline (Na(Mg,Fe3Al6[(OH)4|(BO3)3|Si6O18])
   
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 © 2004 Büro für angewandte Mineralogie · Dr. Stephan Rudolph · D-47918 Tönisvorst
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