Karelianite

General Information:
 Chemical Formula:
V2O3
 Composition:
(Molecular Weight = 149.88 gm)
Vanadium 67.98 % V 
Oxygen 32.02 % O 
 Empirical Formula:
V3+2O3
 IMA Status:
Approved IMA 1963
Physical Properties:
 Cleavage:
None
 Color:
black.
 Density:
4.87
 Diaphaniety:
Opaque
 Hardness:
8-9
 Luster:
Metallic
 Streak:
black
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