Home Microcline
VIII - Tectosilicates (Feldspar Group)		 Crystal habit of Microcline Microcline
 
Name   Microcline
Chemistry   K[AlSi3O8]
Hardness   6
Lustre   vitreous
Colour   white, yellowish, flesh pink, brown, green
Streak   white
Density [g/cm3]   2.55
Crystal habit   triclinic, crystals often twinned, often Carlsbad Law
Cleavage, Fracture   fracture conchoidal
other characteristics and occurrences   amazonestone = green variety
low temperature modification of potassium feldspar in pegmatites and granites
   
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 © 2004 Büro für angewandte Mineralogie · Dr. Stephan Rudolph · D-47918 Tönisvorst
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