Gallite

General Information:
 Chemical Formula:
CuGaS2
 Composition:
(Molecular Weight = 197.40 gm)
Gallium 35.32 % Ga
Copper 32.19 % Cu
Sulfur 32.49 % S 
 Empirical Formula:
CuGaS2
Physical Properties:
 Color:
gray.
 Density:
4.2
 Diaphaniety:
Opaque
 Hardness:
3-3.5 - Calcite-Copper Penny
 Luster:
Metallic
 Streak:
grayish black
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