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Home » Minerals » Chalcocite

Chalcocite


Mineral Properties and Uses



What is Chalcocite?



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.


Physical Properties of Chalcocite

Uses Used as an ore of copper.
Color black, blackish lead gray
Streak grayish black
Luster metallic
Diaphaneity opaque
Cleavage Poor
Mohs Hardness 2.5 - 3
Specific Gravity 5.5 - 5.8
Distinguishing Characteristics color, soft, sooty appearance
Chemical Composition copper sulfide, Cu2S
Crystal System monoclinic


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Chalcocite
Chalcocite from Butte, Montana. This specimen is approximately 3 inches (7.6 centimeters) across.




Chalcocite
Chalcocite from Musina, South Africa. Specimen is approximately 1 inch (2.5 centimeters) across.


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