General Information:
Chemical Formula:
Cu8Bi12S22
Composition:
(Molecular Weight = 3,721.58 gm)
Copper 13.66 % Cu
Bismuth 67.38 % Bi
Sulfur 18.96 % S
Empirical Formula:
Cu8Bi12S22
IMA Status:
Approved IMA 1970
Locality:
Hodursa, Czechoslovakia.
Name Origin:
Named after its locality.
Physical Properties:
Cleavage:
None
Color:
brown, brownish bronze, or steel gray.
Density:
6.45
Diaphaniety:
Opaque
Habits:
Granular - Generally occurs as anhedral to subhedral crystals in matrix., ,
Hardness:
4-5 - Fluorite-Apatite
Luster:
Metallic
Streak:
grayish black
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