Home Ilvaite
VIII - Sorosilicates
Crystal habit of Ilvaite

Name   Ilvaite
Chemistry   CaFe2+2Fe3+[OH|O|Si2O7]
Hardness   5.5 - 6
Lustre   submetallic
Colour   iron black or dark greyish black
Streak   brownish black 
Density [g/cm3]   3.8 - 4.1
Crystal habit   orthorhombic, crystals long, prismatic, striated, acicular, fibrous-radiating aggregates
Cleavage, Fracture   [010], [001] distinct
other characteristics and occurrences   in contact metamorphic rocks

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© 2004 Büro für angewandte Mineralogie · Dr. Stephan Rudolph · D-47918 Tönisvorst
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