| Mineral | Hollandite |
|---|---|
| Formula | Ba(Mn4+,Mn2+)8O16 |
| Crystal Form | Monoclinic/Prismatic [2/m] |
| Cleavage | Good |
| Color | Grayish black, Black, Silver gray |
| Density | 4.7 – 5.0 g/cm3 |
| Diaphaneity | Opaque |
| Fracture | Brittle |
| Hardness | 4.0 - 6.0 |
| Lustre | Earthy |
| Streak | Black |
| Type Loc. | Gowari Wadhona Mine, Chhindwara Dist., Madhya Pradesh, India |
| Dana 8 Class | 7.9.1.1 |
| Strunz Class | IV/D.08-60 |
| Mindat | mindat.org |
| WebMineral | WebMineral |
| ID | 39 |