General Information:
Chemical Formula:
CoAsS
Composition:
(Molecular Weight = 165.92 gm)
Cobalt 35.52 % Co
Arsenic 45.16 % As
Sulfur 19.33 % S
Empirical Formula:
CoAsS
Name Origin:
From the German, Kobold, "underground spirit" or "goblin," in allusion to the refusal of cobaltiferous ores to smelt properly, hence "bewitched."
Physical Properties:
Cleavage:
[100] Good, [010] Good, [001] Good
Color:
reddish silver white, violet steel gray, or black.
Density:
6.33
Diaphaniety:
Opaque
Habits:
Massive - Granular - Common texture observed in granite and other igneous rock., Striated - Parallel lines on crystal surface or cleavage face., Granular - Generally occurs as anhedra l to subhedral crystals in matrix.
Hardness:
5.5 - Knife Blade
Luminescence:
None.
Luster:
Metallic
Streak:
grayish black
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