General Information:
Chemical Formula:
Cu31S16
Composition:
(Molecular Weight = 2,482.98 gm)
Copper 79.34 % Cu
Sulfur 20.66 % S
Empirical Formula:
Cu31S16
IMA Status:
Approved IMA 1962
Physical Properties:
Cleavage:
None
Color:
lead gray, blue black, black, or black gray.
Density:
5.63
Diaphaniety:
Opaque
Hardness:
2.5-3 - Finger Nail-Calcite
Luster:
Metallic
Streak:
metallic
More details...