General Information:
Chemical Formula:
CuS
Composition:
(Molecular Weight = 95.61 gm)
Copper 66.46 % Cu
Sulfur 33.54 % S
Empirical Formula:
CuS
Name Origin:
Named after the Italian mineralogist, N. Covelli (1790-1829).
Physical Properties:
Cleavage:
[0001] Perfect
Color:
indigo blue, light blue, dark blue, or black.
Density:
4.6 - 4.76, Average = 4.68
Diaphaniety:
Opaque
Habits:
Platy - Sheet forms (e.g. micas)., Foliated - Two dimensional platy forms.,
Hardness:
1.5-2 - Talc-Gypsum
Luminescence:
None.
Luster:
Metallic
Streak:
black gray
More details...