General Information:
Chemical Formula:
2(Cu2Pb26(Bi,Sb)20S57)
IMA Status:
Approved IMA 1963
Physical Properties:
Color:
grayish black.
Density:
7.45
Diaphaniety:
Opaque
Hardness:
2.5 - Finger Nail
Luster:
Metallic
Streak:
grayish black
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