General Information:
Chemical Formula:
(Ni,Co)3S4
Composition:
(Molecular Weight = 304.52 gm)
Cobalt 14.51 % Co
Nickel 43.36 % Ni
Sulfur 42.12 % S
Empirical Formula:
Ni2.25Co0.75S4
Name Origin:
Named after its ore-bearing locality, Siegen, Germany.
Physical Properties:
Cleavage:
[100] Imperfect, [010] Imperfect, [001] Imperfect
Color:
violet gray, copper red, light gray, or steel gray.
Density:
4.8 - 5, Average = 4.9
Diaphaniety:
Opaque
Habits:
Massive - Granular - Common texture observed in granite and other igneous rock., ,
Hardness:
5-5.5 - Apatite-Knife Blade
Luster:
Metallic
Streak:
grayish black
More details...