Chalcocite

Info: Chalcocite is often in shape of pseudohexagonal crystals, or in the shape of prism. Chalcocite's colour varies from dark grey to black. Often is found near other minerals of copper.

Found: The most famous locations of chalcocite mineral are Cornwalle (UK), Ural (Russia), Tsumeb (Namibia). Chalcocite is found in big deposits of copper in Mexico, Peru, Chille, Spain, USA and Germany.

Used for: Chalcocite is used mainly for extraction of copper from it.

Crystal structure
Diamond
Hardness
2,5 - 3
Colour
Dark grey
Shine
Metalic