Chemistry:Seligmannite
From HandWiki
Seligmannite | |
---|---|
Seligmannite from Palomo mine, Castrovirreyna Province, Huancavelica Department, Peru | |
General | |
Category | Sulfide minerals |
Formula (repeating unit) | PbCuAsS3 |
Strunz classification | 2.GA.50 |
Crystal system | Orthorhombic |
Crystal class | Dipyramidal (mmm) H-M symbol: (2/m 2/m 2/m) |
Space group | Pmmn |
Identification | |
Formula mass | 441.87 g/mol |
Color | Lead gray to black |
Crystal habit | Massive to crystalline |
Twinning | On {110} very common |
Cleavage | Indistinct on the {001}, {100}, and {010} |
Fracture | Conchoidal |
Tenacity | Brittle |
Mohs scale hardness | 3 |
|re|er}} | Metallic |
Streak | Black to chocolate brown |
Density | 5.38 – 5.44 g/cm3 |
Optical properties | Anisotropic |
References | [1][2] |
Seligmanite is a rare mineral, with the chemical formula PbCuAsS3. Originally described from the Lengenbach Quarry, Valais Canton, Switzerland ; it has also been found in the Raura district, Lima Region, Peru; at Tsumeb, Oshikoto Region, Namibia; and at the Sterling Mine, Sussex County, New Jersey, US.
References
- ↑ Seligmannite: Seligmannite mineral information and data
- ↑ Seligmannite Mineral Data
- ↑ Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine 85 (3): 291–320. doi:10.1180/mgm.2021.43. Bibcode: 2021MinM...85..291W.
Original source: https://en.wikipedia.org/wiki/Seligmannite.
Read more |