General Information:
Chemical Formula:
(Mn,Mg)2Sb+++++Fe+++O8
IMA Status:
Approved IMA
Physical Properties:
Cleavage:
None
Color:
black or dark brownish gray.
Diaphaniety:
Opaque
Hardness:
6-6.5 - Orthoclase-Pyrite
Luster:
Metallic
Streak:
brown
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