General Information:
Chemical Formula:
(Ni,Co,Fe++)(Cr,Fe+++,Al)2O4
IMA Status:
Approved IMA 1978
Physical Properties:
Cleavage:
[???] Indistinct
Color:
black.
Density:
5.24
Diaphaniety:
Opaque
Hardness:
6-6.5 - Orthoclase-Pyrite
Luster:
Metallic
Streak:
greenish gray
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