Germanocolusite

General Information:
 Chemical Formula:
Cu13V(Ge,As)3S16
 Composition:
(Molecular Weight = 1,609.66 gm)
Vanadium 3.16 % V 
Copper 51.32 % Cu
Germanium 10.15 % Ge
Arsenic 3.49 % As
Sulfur 31.87 % S 
 Empirical Formula:
Cu13V4+Ge2.25As0.75S16
 IMA Status:
Approved IMA
Physical Properties:
 Cleavage:
None
 Color:
yellow, grayish yellow, greenish yellow, olive yellow, or cream yellow.
 Diaphaniety:
Opaque
 Hardness:
4.5-5
 Luster:
Metallic
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