Chalcocite, copper(I) sulfide (Cu2S), is an important copperore mineral. It is opaque and dark-gray to black with a metallic luster. It has a hardness of 2½ - 3 on the Mohs scale. It is a sulfide with an orthorhombic crystal system.
Chalcocite, copper(I) sulfide (Cu2S), is an important copperore mineral. It is opaque and dark-gray to black with a metallic luster. It has a hardness of 2½ - 3 on the Mohs scale. It is a sulfide with an orthorhombic crystal system.