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Related to chalcocite: arsenopyrite, covellite


A dark gray mineral, essentially Cu2S, that is an important ore of copper.

[Alteration of obsolete chalcosine, from Greek khalkos, copper.]


(Minerals) a lead-grey or black mineral, found as a copper ore or in veins. It is a source of copper. Composition: copper sulphide. Formula: Cu2S. Crystal structure: orthorhombic
[C19: changed from earlier chalcosine, from Greek khalkos copper + -ite1]


(ˈkæl kəˌsaɪt)

a common mineral, cuprous sulfide, Cu2S: an important ore of copper.
[1865–70; chalco- + (anthra) cite]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.chalcocite - a heavy grey mineral that is an ore of copper
atomic number 29, copper, Cu - a ductile malleable reddish-brown corrosion-resistant diamagnetic metallic element; occurs in various minerals but is the only metal that occurs abundantly in large masses; used as an electrical and thermal conductor
mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition
References in periodicals archive ?
PU-RC-94 returned geochemically anomalous values of As, Sb, Cu and Mo, related to a hydrothermal brecciation with quartz, tourmaline, chalcocite and molybdenite, typical of a porphyry system.
Among specific topics are microbial ecology in extreme acidic pit lakes of the Aberian Pyrite Belt in southwestern Spain, galactose as an inducer of the production of extracellular polymeric substances by Acidithiobacillus ferrooxidans, evidence for widespread dissimilatory hydrogen metabolism among acidophilic bacteria, immobilizing new isolated iron oxidizing bacteria on natural carriers, and the influence of pyrite on the galvanic assisted leaching of chalcocite concentrates.
is the operator of a 3000 hectare property which is known for high grade chalcocite mineralization.
The majority of the Omitiomire resource contains sulphide ore consisting mainly of chalcocite.
Additional chalcocite mineralization has been encountered on the southern side of the zone, which now extends at least 500 metres in strike length and up to 350 metres in width.
The objective of the program is to further define the chalcocite enrichment blanket intersected in previous drilling of the Nacho Zone, as described in our May 4th 2010 news release, as well as to test the Titan 24 induced polarization deeper primary sulphide targets described in our July 20th 2010 press release.
The mineralisation occurs as oxidised copper in the form of carbonates and silicates, and as sulphides in the form of chalcocite and chalcopyrite.
Singular specimens of amethyst from Maine and Rhode Island, along with a choice miniature of Bristol, Connecticut chalcocite, encouraged dealers and collectors to rummage (a la Tucson) through flats of specimens.
Within the silicified chert horizon, mineralisation comprises oxide, malachite and minor azurite trending with depth through a transitional cuprite and native copper zone into a secondary enriched chalcocite zone.
The flowsheet includes new equipment for oxygen flash smelting of a copper/nickel concentrate and for the flash converting of chalcocite.
Inclined hole TMC-03 ( -60x, 167x azimuth, 248' depth) encountered strong chalcocite mineralization over a 70 feet interval (110' to 180') which averaged 6.
At Red Dome, the gold is restricted to the skarns and in the primary state occurs as very fine free gold, either as inclusions in sulphides (bornite, chalcocite, chalcopyrite and arsenopyrite), associated with silicates, tellurides and as minor electrum, with free gold in the oxide zone.