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[kal-kuh-pahy-rahyt] /ˌkæl kəˈpaɪ raɪt/
a very common mineral, copper iron sulfide, CuFeS 2 , occurring in brass-yellow crystals or masses: the most important ore of copper; copper pyrites.
Origin of chalcopyrite
1825-35; chalco- + pyrite Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for chalcopyrite
  • chalcopyrite crystal is anhedral and occurs as isolated crystal in feldspar.
  • Where copper sulfide minerals are present, chalcopyrite is dominant.
  • chalcopyrite and pyrite are disseminated in narrow envelopes in the wall rocks surrounding the dikes.
  • Oxidation obscures original textures and may have obliterated evidence of primary chalcopyrite.
  • Some chalcopyrite occurs in the quartz-pyrite-molybdenite veinlets.
  • The veins contained copper oxides, chalcopyrite, and some nickel.
  • In the flotation stage, the chalcopyrite attaches to the air bubbles and is skimmed off.
  • Natural chalcopyrite has no solid solution series with any other sulfide minerals.
  • chalcopyrite is concentrated in this environment via fluid transport.
  • chalcopyrite in this environment is produced by concentration within a magma system.
British Dictionary definitions for chalcopyrite


/ˌkælkəˈpaɪraɪt; -ˈpaɪə-/
a widely distributed yellow mineral consisting of a sulphide of copper and iron in tetragonal crystalline form: the principal ore of copper. Formula: CuFeS2 Also called copper pyrites
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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chalcopyrite in Science
A brassy yellow, metallic, tetragonal mineral, usually occurring as shapeless masses of grains. Chalcopyrite is found in igneous rocks and copper-rich shales, and it is an important ore of copper. Because of its shiny look and often yellow color, it is sometimes mistaken for gold, and for this reason it is also called fool's gold. Chemical formula: CuFeS2.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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