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chalcocite

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chal·co·cite  (klk-st)
n.
A dark gray mineral, essentially Cu2S, that is an important ore of copper.

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

chalcocite [ˈkælkəˌsaɪt]
n
(Earth Sciences / 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
[changed from earlier chalcosine, from Greek khalkos copper + -ite1]
ThesaurusLegend:  Synonyms Related Words Antonyms
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


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We expect that our current drilling program, combined with the historical drill results reported by Santa Fe and other companies, will allow Aurelio to further quantify both a near-surface oxide copper resource and a deeper, higher-grade copper-zinc-gold-silver resource hosted in a combination of chalcocite replacement blanket and skarn/carbonate replacement deposits.
The claims cover outcrops with visible malachite, azurite and chalcocite.
Copper, with grades shown in Table 2, is mainly contained in chalcopyrite, bornite, chalcocite, and copper carbonates in the oxide zone.
 
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