Arsenohauchecornite

General Information:
 Chemical Formula:
Ni18Bi3AsS16
 Composition:
(Molecular Weight = 2,271.34 gm)
Nickel 46.51 % Ni
Bismuth 27.60 % Bi
Arsenic 3.30 % As
Sulfur 22.59 % S 
 Empirical Formula:
Ni18Bi3AsS16
 IMA Status:
Approved IMA 1979
Physical Properties:
 Cleavage:
None
 Color:
bronze.
 Density:
6.35
 Diaphaniety:
Opaque
 Hardness:
5.5 - Knife Blade
 Luster:
Metallic
 Streak:
grayish black
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