Seligmannite
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| Seligmannite | |
|---|---|
| Category | Sulfide Mineral |
| Chemical formula | PbCuAsS3 |
| Identification | |
| Molecular Weight | 441.87 gm |
| Color | Lead gray to black |
| Crystal habit | Massive to Crystaline |
| Crystal system | Orthorhombic - Dipyramidal |
| Twinning | on {110} very common |
| Cleavage | Indistinct on the {001}, {100}, and {010} |
| Fracture | Conchoidal |
| Tenacity | Brittle |
| Mohs Scale hardness | 3 |
| Luster | Metallic |
| Optical Properties | Anisotropic |
| Streak | Black to chocolate brown |
| Density | 5.38 - 5.44 g/cm3 |
| 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, USA.
[edit] References
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