General Information:
Chemical Formula:
Cu
Composition:
(Molecular Weight = 63.55 gm)
Copper 100.0 % Cu
Empirical Formula:
Cu
Environment:
Cap rock of copper sulfide veins and in some types of volcanic rocks.
Locality:
Northern Michigan, USA, Cyprus island, Greece.
Name Origin:
From the Greek, Kyprios, the name of the island of Cyprus, once producing this metal.
Physical Properties:
Cleavage:
None
Color:
brown, copper red, light pink, or red.
Density:
8.94 - 8.95, Average = 8.94
Diaphaniety:
Opaque
Habits:
Nodular - Tuberose forms having irregular protuberances over the surface., Arborescent - "Tree like" growths of branched systems (e.g. silver).,
Hardness:
2.5-3 - Finger Nail-Calcite
Luminescence:
None.
Luster:
Metallic
Streak:
rose
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