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General Information:
 Chemical Formula:
Pb3(Fe+++,Mn+++)4Mn++++3O15
 IMA Status:
Approved IMA
Physical Properties:
 Cleavage:
[001] Indistinct
 Color:
black.
 Density:
6.83
 Diaphaniety:
Opaque
 Hardness:
5.7
 Luster:
Metallic
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