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Sylvanite
Silver gold telluride / From Wikipedia, the free encyclopedia
This article is about the mineral. For the place, see Sylvanite, Montana.
For the sylvite-halite sedimentary rock, see Sylvinite.
Sylvanite or silver gold telluride, chemical formula (Ag,Au)Te2, is the most common telluride of gold.
Quick Facts General, Category ...
Sylvanite | |
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![]() Sylvanite from the Cripple Creek mining district | |
General | |
Category | Telluride mineral |
Formula (repeating unit) | (Ag,Au)Te2 |
IMA symbol | Syv[1] |
Strunz classification | 2.EA.05 |
Crystal system | Monoclinic |
Crystal class | Prismatic (2/m) (same H-M symbol) |
Space group | P2/c |
Identification | |
Formula mass | 429.89 g/mol |
Color | Silver-grey, silver-white |
Crystal habit | Massive to crystalline |
Cleavage | Perfect on the {010} |
Fracture | Uneven |
Tenacity | Brittle |
Mohs scale hardness | 1.5–2 |
Luster | Metallic |
Streak | Steel grey |
Diaphaneity | Opaque |
Specific gravity | 8.2 |
Density | 8.1 |
Optical properties | Anisotropic |
Pleochroism | None |
Ultraviolet fluorescence | None |
References | [2][3][4] |
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