1. a common mineral and important ore of copper, copper iron sulfide, Cu5FeS4, 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 formsbor·nit·ic [bawr-nit-ik] /bɔrˈnɪt ɪk/, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for bornite

Historical Examples of bornite

  • Much of the copper of commerce is made from chalcopyrite and bornite, and these ores are more difficult to work.

British Dictionary definitions for bornite


  1. a mineral consisting of a sulphide of copper and iron that tarnishes to purple or dark red. It occurs in copper deposits. Formula: Cu 5 FeS 4Also called: peacock ore

Word Origin for bornite

C19: named after I. von Born (1742–91), Austrian mineralogist; see -ite 1
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