General Information:
Chemical Formula:
Cu7S4
Composition:
(Molecular Weight = 573.09 gm)
Copper 77.62 % Cu
Sulfur 22.38 % S
Empirical Formula:
Cu7S4
IMA Status:
Approved IMA 1968
Locality:
ANI MINE, AKITA,
Physical Properties:
Cleavage:
None
Color:
bluish gray.
Density:
5.68
Diaphaniety:
Opaque
Hardness:
3-4 - Calcite-Fluorite
Luminescence:
Non-fluorescent.
Luster:
Metallic
Streak:
black
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