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Related to bornite: chalcocite, Enargite, covellite


A brownish-bronze, lustrous copper ore with the composition Cu5FeS4 that tarnishes to purple when exposed to air.

[After Ignaz von Born (1742-1791), Austrian mineralogist.]
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 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
[C19: named after I. von Born (1742–91), Austrian mineralogist; see -ite1]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈbɔr naɪt)

a copper sulfide mineral, Cu5FeS4, occurring in brown masses that tarnish to purple.
[1850–55; after I. von Born (1742–91), Austrian mineralogist; see -ite1]
bor•nit′ic (-ˈnɪt ɪk) adj.
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.bornite - a mineral consisting of sulfides of copper and iron that is found in copper deposits
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 ?
Further drilling approximately 2.3 kilometers to the northeast along the Burgundy - Telena - 72' Zone trend intercepted new mineralization hosted in potassic/hematite altered intrusions in the form of disseminated, and vein-hosted chalcopyrite + bornite adjacent to historic high-grade Cu-Au-Ag skarn-type mineralization.
The ore minerals are pyrite, sphalerite, chalcopyrite, galena, and minor tetrahedrite and bornite. To date, four lenses of Zn/Cu mineralisation have been defined within at least two, possibly three horizons.
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) -
In the 1980s, NANA bought the Bornite copper prospect from Kennecott.
A detailed mineralogical investigation using petrographic, X-ray Diffraction and SEM-EDX techniques shows that the deposits consist of magnetite, hematite, malachite and occasional bornite and pyrite as the principal ore minerals and quartz, garnet, epidote, calcite, pectolite, serpentine and foshagite as the main gangue phases.
Moreover, extensive studies showed that hypogene hydrothermal copper minerals such as chalcopyrite and bornite do not display appreciable fractionation (> [+ or -] 1 [per thousand]) [7-11].
Exploration efforts have been focused on two deposits in the Ambler district the Arctic VMS deposit and the Bornite carbonate replacement deposit.
Nadir mine's mineral composition includes magnetite, hematite; rarely there are also pyrite, chalcopyrite, bornite. Non-metallic minerals are apatite, quartz, hornblende, actinolite, epidote, chlorite, Saussure, pomegranate.
The opaque minerals in these rocks consist of chalcopyrite, bornite, malachite, azurite and Fe-oxide.