Home Olivine
VIII - Nesosilicates
Kristallform von Olivin

Name   Olivine
Chemistry   (Mg,Fe)2[SiO4]
Hardness   6.5 - 7
Lustre   vitreous - greasy
Colour   olive green, yellowish, yellowish green, greenish, black, red brown
Streak   white 
Density [g/cm3]   3.3 - 4.2
Crystal habit   orthorhombic, crystals prismatic or thick tabular
Cleavage, Fracture   [001] good, [010] distinct, fracture conchoidal
other characteristics and occurrences   forsterite = Mg2[SiO4] - colourless, light green
fayalite   = Fe2[SiO4] - wine yellow, olive green
peridote   = (Mg,Fe)2[SiO4] - olive green
in basic and ultrabasic rocks as idiomorphic crystals or grained aggregates

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