Vozhminite

General Information:
 Chemical Formula:
(Ni,Co)4(As,Sb)S2
 Composition:
(Molecular Weight = 392.79 gm)
Cobalt 15.00 % Co
Nickel 44.83 % Ni
Antimony 12.40 % Sb
Arsenic 11.44 % As
Sulfur 16.33 % S 
 Empirical Formula:
Ni3CoAs0.6Sb0.4S2
 IMA Status:
Approved IMA 1982
 Locality:
Vozhmin serpentinite, Karelia, Russia.
 Name Origin:
Named for the locality.
Physical Properties:
 Cleavage:
[???] Distinct
 Color:
brownish yellow or light pink orange.
 Density:
6.2
 Diaphaniety:
Opaque
 Habits:
Massive - Uniformly indistinguishable crystals forming large masses., ,
 Hardness:
4.5-5
 Luster:
Metallic
 Streak:
black
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