| Mineral | Chalcostibite |
|---|---|
| Formula | CuSbS2 |
| Crystal Form | Orthorhombic/Dipyramidal [2/m 2/m 2/m] |
| Cleavage | Perfect on {010}. Imperfect on {001} and {100} |
| Color | Lead-grey, Iron-grey, Black |
| Density | 4.9 – 5.0 g/cm3 |
| Diaphaneity | Opaque |
| Fracture | Sub-conchoidal |
| Hardness | 3.0 - 4.0 |
| Lustre | Metallic |
| Streak | Black |
| Dana 8 Class | 3.7.5.1 |
| Strunz Class | 2/E.04-10 |
| Mindat | mindat.org |
| WebMineral | WebMineral |
| ID | 305 |