Anthophyllite - angew. Mineralogie

Anthophyllite
VIII - Inosilicates (Amphibole Group)

Crystal habit of Anthophyllite

`Name`		`Anthophyllite`
`Chemistry`		`(Mg,Fe)₇[OH\|Si₄O₁₁]₂`
`Hardness`		`5.5`
`Lustre`		`vitreous - pearly`
`Colour`		`yellow brown, greeen brown, brown grey`
`Streak`		`white, yellowish`
`Density [g/cm³]`		`2.9`
`Crystal habit`		`orthorhombic, crystals rarely`
`Cleavage, Fracture`		`[210] perfect (126°), fracture splintery`
`other characteristics and occurrences`		`massive, also asbestos-like masses,` `in crystalline schists with high Mg-content, formed by hydratation from olivine ((Mg,Fe)₂[SiO₄])`

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

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