Magnesiocoulsonite

General Information:
 Chemical Formula:
MgV++++2O4
 Composition:
(Molecular Weight = 190.19 gm)
Magnesium 12.78 % Mg
Vanadium 53.57 % V 
Oxygen 33.65 % O 
 Empirical Formula:
MgV4+2O4
 Environment:
An accessory mineral in Cr-V bearing parametamorphic rocks.
 IMA Status:
Approved IMA
 Locality:
Precambrian Slyudyanka Complex, Slyudyanka, southern Lake Baikal Region, Russia.
 Name Origin:
Named for its relationship to coulsonite.
Physical Properties:
 Cleavage:
None
 Color:
black.
 Density:
4.3
 Diaphaniety:
Opaque
 Habits:
Disseminated - Occurs in small, distinct particles dispersed in matrix., ,
 Hardness:
6-6.5 - Orthoclase-Pyrite
 Luster:
Metallic
 Streak:
black
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