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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.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(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]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈkæl kəˌsaɪt)

a common mineral, cuprous sulfide, Cu2S: an important ore of copper.
[1865–70; chalco- + (anthra) cite]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
Chalcocite drill core from its Janice Lake sedimentary copper project will be on display at the Company's booth.
The company says that "The Kamoa North Bonanza Zone represents a new style of copper mineralisation at Kamoa-Kakula, where massive to semi-massive chalcopyrite, bornite and chalcocite have locally replaced pyrite in the Kamoa Pyritic Siltstone (KPS) -
The surface mineralisation at BEP and BWP comprises chalcocite, covellite and digenite mineralisation with lesser chalcopyrite.
Chalcocite is an economically important mineral of copper.
* Phase 2: Stronger and later overprinting mineralization events are also evident in most of the new drill holes, including widespread garnet-bearing skarns containing clots, veins, and disseminations of covellite, native copper, and bornite, with local formation of secondary chalcocite.
There are five stable phases of [Cu.sub.x]S at room temperature which vary according to values of x (1 [less than or equal to] x [less than or equal to] 2): chalcocite ([Cu.sub.2]S), djurleite ([Cu.sub.1.95]S), digenite ([Cu.sub.1.8]S), anilite ([Cu.sub.1.75]S), and covellite (CuS) [8, 9].
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.
Which metal is obtained from the ore chalcocite? 10.
Mineralized zones in the porphyry deposits always has lower resistivity and higher chargeability than wall rocks because these deposits have high values of sulfidic minerals such as pyrite, chalcopyrite, chalcocite, covelite and bornite [5,3].
is the operator of a 3000 hectare property which is known for high grade chalcocite mineralization.