General Information:
Chemical Formula:
Cu2Se
Composition:
(Molecular Weight = 206.05 gm)
Copper 61.68 % Cu
Selenium 38.32 % Se
Empirical Formula:
Cu2Se
Name Origin:
Named after J. J. Berzelius.
Physical Properties:
Cleavage:
None
Color:
bluish gray, gray, or black.
Density:
6.7
Diaphaniety:
Opaque
Habits:
Dendritic - Branching "tree-like" growths of great complexity (e.g. pyrolusite)., Disseminated - Occurs in small, distinct particles dispersed in matrix., Massive - Uniformly indistin guishable crystals forming large masses.
Hardness:
2 - Gypsum
Luster:
Metallic
Streak:
shining
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