| Mineral class | Sulphides : Pyrite marcasite group |
| Chemical formula | (Ni,Fe,Co)S2 |
| Crystal system | Isometric. |
| Habitus | As crusts or radiating balls. |
| Cleavage | None. |
| Hardness | 6 |
| Density | 5 - 5.02 |
| Color | Steel gray, brown to dark brown, opaque. |
| Streak | Black. |
| Luster | Dull metallic. |
| Description | |
| Occurance | |
| Associates | Pentlandite. |
| Notes |
Named after the Peruvian scientist, J. J. Bravo (1874-1928). Not approved by IMA. |
| Localities |
|
| To sulphides index. |
Mineral group index. |
Main index. |
If you have some questions, suggestions or comments you are welcome to write me a line or two.