Synonyms: |
Anthogrammite, Antofillite, Kupferite, Anthophylline, Gray Asbestos, Magnesio-anthophyllite |
Classification: |
Silicates, inosilicates, amphibole group |
Chemical formula: |
(Mg,Fe2+)7Si8O22(OH)2 |
Crystal system: |
Orthorhombic |
Density (g/cm3): |
3,67 |
Cleavage: |
Perfect on {210}, imperfect on {010}, {100} |
Fracture: |
Conchoidal |
Hardness (Mohs): |
5,5 - 6 |
Colour: |
White, greenish grey, green, clove brown, or brownish green |
Lustre: |
Vitreous, Pearly |
Streak: |
White to greyish-white. |
Type locality: |
Kjennerudvann Anthophyllite Prospect, Kjennerudvann, Kongsberg, Buskerud, Norway |
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