| Mineral | Chalcophanite |
|---|---|
| Formula | (Zn,Fe,Mn)Mn3O7 · 3H2O |
| Crystal Form | Trigonal/Rhombohedral [3] |
| Cleavage | Perfect on {0001} |
| Color | Iron-black, Bluish-black |
| Density | 3.9 – 4.1 g/cm3 |
| Diaphaneity | Opaque |
| Fracture | Irregular/Uneven |
| Hardness | 2.5 |
| Lustre | Metallic, Sub-Metallic |
| Streak | Dark brown, Red-brown |
| Type Loc. | Passaic pit, Sterling Hill, Ogdensburg, Franklin Mining District, Sussex Co., NJ, USA |
| Dana 8 Class | 7.8.2.1 |
| Strunz Class | 4/F.11-20 |
| Mindat | mindat.org |
| WebMineral | WebMineral |
| ID | 383 |