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[bawr-nahyt] /ˈbɔr naɪt/
a common mineral and important ore of copper, copper iron sulfide, Cu 5 FeS 4 , occurring in masses, of brownish color when first exposed to the air; peacock ore.
Origin of bornite
1850-55; named after I. von Born (1742-91), Austrian mineralogist; see -ite1
Related forms
[bawr-nit-ik] /bɔrˈnɪt ɪk/ (Show IPA),
adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for bornite
  • bornite and chalcocite mineralization in quartz is also present.
  • The ore from the mine, primarily chalcopyrite with some bornite, was extracted from quartz fissure veins in sandy slates.
  • Most of the outcrop samples contain disseminated pyrite, chalcopyrite, and bornite.
  • B veins characteristically contain molybdenite-chalcopyrite and traces of bornite in some of the veins.
  • Mineralization generally occurs as bornite and chalcopyrite that has oxidized to azurite, malachite, and tenorite.
  • The principal minerals are chalcopyrite and bornite, occurring as disseminations and vein fillings.
  • Also present are veins along aplitic intrusions containing argentiferous galena and tetrahedrite with bornite.
  • Chalcopyrite, bornite, and enargite are considered the primary minerals that were formed deep underground by igneous processes.
British Dictionary definitions for bornite


a mineral consisting of a sulphide of copper and iron that tarnishes to purple or dark red. It occurs in copper deposits. Formula: Cu5FeS4 Also called peacock ore
Word Origin
C19: named after I. von Born (1742–91), Austrian mineralogist; see -ite1
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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