Cobaltite

Formula	CoAsS
Origin	Häkansboda (Sweden)
Description	idiomorphic single crystal with weal lustre
Classification (Lapis)	Sulfides
Crystal System	Orthorhombic
Hardness	5,5 – 6,0
Colour	Silver-white
Streak	Grayish black
Luminescence	none observed
Lustre	metallic
Transparency (Opacity)	opaque
Cleavage	perfect
Fracture	uneven
Magnetism	no
Geological Setting	in high-temperature hydrothermal deposits, as disseminations, and as veins in contact metamorphosed rocks
Specific Gravity	6,3 g/cm3