Clausthalite | |
---|---|
General | |
Category | Selenide mineral |
Formula (repeating unit) | PbSe |
IMA symbol | Cth[1] |
Strunz classification | 2.CD.10 |
Dana classification | 02.08.01.02 |
Crystal system | Isometric |
Crystal class | Hexoctahedral (m3m) H-M symbol: (4/m 3 2/m) |
Space group | Fm3m |
Identification | |
Color | Bluish gray to lead-gray |
Crystal habit | Massive to granular with euhedral crystals |
Cleavage | {001} Perfect, {010} Perfect, {100} Perfect |
Mohs scale hardness | 2.5 |
Luster | Metallic |
Streak | grayish black |
Diaphaneity | opaque |
Specific gravity | 7.6–8.8 |
References | [2][3][4][5] |
Clausthalite is a lead selenide mineral, PbSe. It forms a solid solution series with galena PbS.