General Information:
Chemical Formula:
Pb27(Cu,Fe)2(Sb,Bi)19S57
IMA Status:
Approved IMA 1983
Physical Properties:
Cleavage:
[???] Good
Color:
lead gray.
Density:
6.47
Diaphaniety:
Opaque
Hardness:
3.5-4 - Copper Penny-Flourite
Luster:
Metallic
Streak:
grayish black
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