Eclarite

General Information:
 Chemical Formula:
Pb9(Cu,Fe)Bi12S28
Physical Properties:
 Cleavage:
[???] Good
 Color:
white gray or tin white.
 Density:
6.85
 Diaphaniety:
Opaque
 Hardness:
3-3.5 - Calcite-Copper Penny
 Luster:
Metallic
 Streak:
lead gray
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