Home Piemontite
VIII - Sorosilicates (Epidote Group)		 Crystal habit of Piemontite
 
Name   Piemontite
Chemistry   Ca2(Fe3+,Mn3+)Al2[O|OH|SiO4|Si2O7]
Hardness   6 - 7
Lustre   vitreous
Colour   yellow, carmine red, red, reddish brown, reddish black
Streak   red 
Density [g/cm3]   3.7
Crystal habit   monoclinic
Cleavage, Fracture   [001] good, [100] distinct
other characteristics and occurrences   grained, dense aggregates,
in manganese ore deposits, which were affectes by contact metamorphism
   
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 © 2004 Büro für angewandte Mineralogie · Dr. Stephan Rudolph · D-47918 Tönisvorst
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