Skutterudite – Schausammlung

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