General Information:
Chemical Formula:
Cu6As4S9
Composition:
(Molecular Weight = 969.56 gm)
Copper 39.32 % Cu
Arsenic 30.91 % As
Sulfur 29.77 % S
Empirical Formula:
Cu6As4S9
IMA Status:
Approved IMA 1964
Physical Properties:
Cleavage:
[???] Indistinct
Color:
steel gray.
Density:
5.2
Diaphaniety:
Opaque
Hardness:
5 - Apatite
Luster:
Metallic
Streak:
grayish black
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