Cu3AsS4Orthorhombic
Enargite
Cu3AsS4
SulfidesChemical FormulaCu3AsS4
Crystal SystemOrthorhombic
Mohs Hardness3
Specific Gravity4.45
ColorGrayish black to iron black
LusterMetallic
StreakGrayish black
CleavageOne direction
FractureUneven
Occurrence
Found in hydrothermal veins. Copper ore.