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Berthierite
From Wikipedia, the free encyclopedia
Berthierite is a mineral, a sulfide of iron and antimony with formula FeSb2S4. It is steel grey in colour with a metallic lustre which can be covered by an iridescent tarnish. Because of its appearance it is often mistaken for stibnite.
Quick Facts General, Category ...
Berthierite | |
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General | |
Category | Mineral |
Formula (repeating unit) | FeSb2S4 |
IMA symbol | Btr[1] v |
Strunz classification | 2.HA.20 |
Crystal system | Orthorhombic |
Crystal class | Dipyramidal (mmm) H-M symbol: (2/m 2/m 2/m) |
Space group | Pnam |
Identification | |
Color | steel grey |
Cleavage | poor/indistinct |
Mohs scale hardness | 2–3 |
Luster | metallic |
Diaphaneity | opaque |
Specific gravity | 4.64 |
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It was discovered in France in 1827 and named for the French chemist, Pierre Berthier (1782–1861).