Jolliffeite

General Information:
 Chemical Formula:
(Ni,Co)AsSe
 Composition:
(Molecular Weight = 212.63 gm)
Cobalt 6.93 % Co
Nickel 20.70 % Ni
Arsenic 35.24 % As
Selenium 37.13 % Se
 Empirical Formula:
Ni0.75Co0.25AsSe
 IMA Status:
Approved IMA
Physical Properties:
 Color:
tin white.
 Density:
7.1
 Diaphaniety:
Opaque
 Hardness:
6-6.5 - Orthoclase-Pyrite
 Luster:
Metallic
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