General Information:
Chemical Formula:
(Ni,Co,Cu)Se2
Composition:
(Molecular Weight = 217.17 gm)
Cobalt 8.14 % Co
Copper 2.93 % Cu
Nickel 16.22 % Ni
Selenium 72.72 % Se
Empirical Formula:
Ni0.6Co0.3Cu0.1Se2
Physical Properties:
Cleavage:
[001] Perfect, [011] Distinct
Color:
lead gray or steel gray.
Density:
6.58 - 6.74, Average = 6.66
Diaphaniety:
Opaque
Hardness:
2.5-3 - Finger Nail-Calcite
Luster:
Metallic
Streak:
black
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