General Information:
Chemical Formula:
Cu3Se2
Composition:
(Molecular Weight = 348.56 gm)
Copper 54.69 % Cu
Selenium 45.31 % Se
Empirical Formula:
Cu3Se2
Name Origin:
Named after the Sierra de Umango in Argentina.
Physical Properties:
Cleavage:
[010] Distinct, [001] Distinct
Color:
blue black, brownish black, or red violet.
Density:
5.62 - 6.78, Average = 6.2
Diaphaniety:
Opaque
Habits:
Massive - Granular - Common texture observed in granite and other igneous rock., ,
Hardness:
3 - Calcite
Luster:
Metallic
Streak:
black
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