Chalcocite Definition

Chalcocite Sentence Examples

• The mining product next in value to coal in 1908 was copper, taken chiefly in Carbon county in a zone of brecciated quartzite underlying schist, the original ore being chalcopyrite, with possibly some pyrite, a secondary enrichment, which has produced important bodies of chalcocite in the upper workings, but these are replaced by chalcopyrite at greater depth.

• The principal ores of copper are the oxides cuprite and melaconite, the carbonates malachite and chessylite, the basic chloride atacamite, the silicate chrysocolla, the sulphides chalcocite, chalcopyrite, erubescite and tetrahedrite.

• Chalcocite, redruthite, copper-glance or vitreous copper (Cu 2 S) contains about 80% of copper.

• Cuprous sulphide, Cu 2 S, occurs in nature as the mineral chalcocite or copper-glance, and may be obtained as a black brittle mass by the direct combination of its constituents.

• By definition is contains chalcopyrite together with covellite, chalcocite and digenite (and rare bornite ).