Cobaltite
Chemical Formula	CoAsS
Species	Sulfides
Crystal System	Orthorhombic
Mohs Scale	5
Specific Gravity	6.335
Color	Reddish silver white, Purple steel gray to black
Streak	Grayish-black
Luster	Metallic
Diaphaneity	Opaque
Cleavage	PerfectPerfect on
Fracture	Irregular/Uneven
Crystal Habit：Granular to massive, rarely as striated crystals
Geological Setting：High temperature hydrothermal deposits, veins in contact metamorphic rocks.