Chalcocite is an iron sulfide mineral and an important ore of copper. It is most commonly found as a supergene mineral in the enriched zones of sulfide deposits. It is also occurs in hydrothermal veins.
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| Chalcocite |
Physical Properties of Chalcocite |
| Chemical Classification | sulfide |
| Color | black, blackish lead gray |
| Streak | grayish black |
| Luster | metallic |
| Diaphaneity | opaque |
| Cleavage | poor |
| Mohs Hardness | 2.5 to 3 |
| Specific Gravity | 5.5 to 5.8 |
| Diagnostic Properties | color, soft, sooty appearance |
| Chemical Composition | copper sulfide, Cu2S |
| Crystal System | monoclinic |
| Uses | Used as an ore of copper |
Sources:
Geology.com
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