| Formula | (Cu, Fe, Ag, Zn)12Sb4S13 |
| Origin | Cavnic (Romania) |
| Description | Tetrahedrite with galenite, pyrite and baryte |
| Classification (Lapis) | Sulfides |
| Crystal System | Cubic |
| Hardness | 3,0 – 4,5 |
| Colour | Flint-gray to iron-black to dull black, cherry-red in transmitted light; in polished section, gray inclining to olive-brown |
| Streak | Black to brown |
| Luminescence | none observed |
| Lustre | Metallic |
| Transparency (Opacity) | Opaque |
| Cleavage | |
| Fracture | Subconchoidal |
| Magnetism | non magnetic |
| Geological Setting | Typically in hydrothermal veins or contact metamorphic deposits of low to medium temperature of formation |
| Specific Gravity | 4,99 g/cm3 |
