| Mineral | Arsenopyrite |
|---|---|
| Formula | FeAsS |
| Crystal Form | Monoclinic/Prismatic [2/m] |
| Cleavage | Distinct/Good. Distinct on {001}; {010} in traces |
| Color | Silver-white to Steel-grey |
| Density | 6.1 g/cm3 |
| Diaphaneity | Opaque |
| Fracture | Irregular/Uneven |
| Hardness | 5.5 - 6.0 |
| Lustre | Metallic |
| Streak | Grey-black |
| Dana 8 Class | 2.12.4.1 |
| Strunz Class | II/D.22-10 |
| Mindat | mindat.org |
| WebMineral | WebMineral |
| ID | 113 |