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Richterite VIII - Inosilicates (Amphibole Group)

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Name		Richterite
Chemistry		Na2Ca(Mg,Fe2+,Mn,Fe3+,Al)5[(OH,F)|Si4O11]2
Hardness		6
Lustre		vitreous
Colour		blue, brown, brown red, grey violet, yellow
Streak		white
Density [g/cm3]		3.0 - 3.5
Crystal habit		monoclinic, crystals fibrous
Cleavage, Fracture		[110], [100] perfect
other characteristics and occurrences		contact metamorphic mineral in metasomatic limestones

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

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