General Information:
Chemical Formula:
CuO
Composition:
(Molecular Weight = 79.55 gm)
Copper 79.89 % Cu
Oxygen 20.11 % O
Empirical Formula:
CuO
Environment:
Secondary copper mineral.
IMA Status:
Approved IMA 1960
Locality:
Bisbee, Arizona, USA.
Name Origin:
Named after the Italian botanist, M. Tenor (1781-1861).
Physical Properties:
Cleavage:
None
Color:
black or steel gray.
Density:
6.5
Diaphaniety:
Opaque
Habits:
Scaly - Morphology like fish scales., Earthy - Dull, clay-like texture with no visible crystalline affinities, (e.g. howlite)., Massive - Uniformly indistinguishable crystals forming large masses.
Hardness:
3.5-4 - Copper Penny-Flourite
Luminescence:
None.
Luster:
Earthy (Dull)
Streak:
black
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