A native sulphide of copper, occuring in masses of a dark blue color; -- hence called indigo copper.

(der) Covellin, (der) Kupferindig Etymology: in honour of the italian Mineralogist N. Covelli, who did the first chemical analysis. Chemical formula: CuS Crystal system: hexagonal Mohs scale: 1,5 - 2 Density: 4,6 Environment: Mostly a secondary mineral of sulfide ore bodies in the oxidation zone. More specific details can be found in the mineral database

Covellite is a copper - sulfide ore mineral. The copper content is 50% by atomic percentage.

Copper sulphide ore.

Covellite (also know as covelline) is a crystalline form of copper sulfide (CuS). In appearance, covellite is an enchanting indigo blue.