Definitions for "Chalcocite"
Native copper sulphide, called also copper glance, and vitreous copper; a mineral of a black color and metallic luster.
(der) Chalkosin, (der)Kupferglanz Etymology: gr. chalkos - Copper, Bronze Chemical formula: Cu2S Crystal system: monoclinic - prismatic Mohs scale 2,5 - 3 Density: 5,8 Environment: Secondary mineral near or in oxidized copper sulfide ore deposits. More specific details can be found in the mineralogy database
A sulphide mineral of copper common in the zone of secondary enrichment.