Home Hornblende
VIII - Inosilicates (Amphibole Group)
Crystal habit of Hornblende

Name   Hornblende
Chemistry   (Ca,Na,K)2(Mg,Fe2+,Fe3+,Al)5[OH|(Si,Al)4O11]2
Hardness   5 - 6
Lustre   vitreous
Colour   green to black
Streak   white 
Density [g/cm3]   2.9 - 3.4
Crystal habit   monoclinic, crystals prismatic, short, acicular, fibrous
Cleavage, Fracture   [110] perfect (124°), fracture uneven
other characteristics and occurrences   in igneous and metamorphic rocks

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