Paderaite

General Information:
 Chemical Formula:
AgPb2Cu6Bi11S22
 Composition:
(Molecular Weight = 3,907.78 gm)
Copper 9.76 % Cu
Silver 2.76 % Ag
Bismuth 58.83 % Bi
Lead 10.60 % Pb
Sulfur 18.05 % S 
 Empirical Formula:
AgPb2Cu6Bi11S22
 IMA Status:
Approved IMA
Physical Properties:
 Color:
black or steel gray.
 Density:
6.91
 Diaphaniety:
Opaque
 Hardness:
4 - Fluorite
 Luster:
Metallic
 Streak:
lead gray
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