General Information:
Chemical Formula:
(Ag,Cu)3(Bi,Pb)7S12
Composition:
(Molecular Weight = 2,134.46 gm)
Copper 2.23 % Cu
Silver 11.37 % Ag
Bismuth 48.95 % Bi
Lead 19.41 % Pb
Sulfur 18.03 % S
Empirical Formula:
Ag2.25Cu0.75Bi5Pb2S12
IMA Status:
Approved IMA 1975
Locality:
Outlaw Mine, 12 miles north of Manhattan, Nye Co. Nevada, USA.
Physical Properties:
Cleavage:
[???] Good
Color:
grayish yellow or copper.
Density:
6.7
Diaphaniety:
Opaque
Hardness:
3.5 - Copper Penny
Luminescence:
Non-fluorescent.
Luster:
Metallic
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