| Mineral | Bournonite |
|---|---|
| Formula | PbCuSbS3 |
| Crystal Form | Orthorhombic/Dipyramidal [2/m 2/m 2/m] |
| Cleavage | [010] Imperfect |
| Color | Steel-gray |
| Density | 5.8 – 5.8 g/cm3 |
| Diaphaneity | Opaque |
| Fracture | Irregular, Sub-conchoidal |
| Hardness | 2.5 - 3.0 |
| Lustre | Metallic |
| Streak | Steel-gray |
| Type Loc. | Wheal Boys, Port Isaac, St. Endellion, Wadebridge Dist., Cornwall, England, UK |
| Dana 8 Class | 03.04.03.02 |
| Strunz Class | II/E.16-20 |
| Mindat | mindat.org |
| WebMineral | WebMineral |
| ID | 180 |