Skutterudite
Formula | CoAs2−3 |
Origin | Bou Azzer (Morocco) |
Description | Solid piece of skutterudite with discernible crystal faces on the upper side. |
Classification (Lapis) | Sulfides |
Crystal System | Cubic |
Hardness | 5,5 – 6,0 |
Colour | Tin-white to silver-gray, tarnishes gray or iridescent; in polished section, gray, creamy or golden white |
Streak | Black |
Luminescence | |
Lustre | Metallic |
Transparency (Opacity) | Opaque |
Cleavage | Distinct |
Fracture | Conchoidal to uneven |
Magnetism | |
Geological Setting | Typically in medium- to high-temperature hydrothermal veins with other Ni–Co sulfide minerals |
Specific Gravity | 6,5 g/cm3 |
Kristallmodell
#© Mark Holtkamp