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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
copper glance
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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Copper mineralization is quite visible in an old pit near a gravel road and impressive malachite staining along with chalcocite is strata bound within the more sandy beds of the sediments.
Kat Exploration Report on Recent Discoveries on its "Lucky" Property by Business Wire
These claims incorporate projected southwestern extensions of the MAN Area copper-zinc-silver-gold sulfide mineralization, as well as the southwestern continuation of the leachable oxide copper and chalcocite copper deposits overlying the MAN Area sulfide zone.
Aurelio Redeems 10% Convertible Debentures with Cash Payment & ... by Business Wire
Approximately 20,000 feet of the planned and permitted drill program has been designed to further delineate the extent of the leachable chalcocite resource, and provide additional drill and assay data for an independent NI 43-101 resource estimate to be completed by the end of the year.
Aurelio Announces Details of 2008 Exploration & Development Program ... by Business Wire
 
 
 
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