CoAsSOrthorhombic
Cobaltite
CoAsS
SulfidesChemical FormulaCoAsS
Crystal SystemOrthorhombic
Mohs Hardness5.5
Specific Gravity6.33
ColorSilver white to reddish silver
LusterMetallic
StreakGrayish black
CleavageOne direction
FractureUneven
Occurrence
Found in hydrothermal deposits. Ore of cobalt.