Carrollite
| Formula | Cu(Co, Ni)2S4 |
| Origin | Mashamba West Mine, Kolwezi (DR Congo) |
| Description | highly lustrous cube-shaped carollite crystal on matrix |
| Classification (Lapis) | Sulfides |
| Crystal System | cubic |
| Hardness | 4,5 – 5,5 |
| Colour | pale gray to steel-gray, tarnishing easily to copper-red or violet-gray |
| Streak | grey-black |
| Luminescence | none observed |
| Lustre | metallic |
| Transparency (Opacity) | opaque |
| Cleavage | imperfect |
| Fracture | uneven to subconchoidal |
| Magnetism | negative |
| Geological Setting | In hydrothermal vein deposits |
| Specific Gravity | 4,83 g/cm3 |
