bornite

== English == === Etymology === From Born +‎ -ite, named after Austrian mineralogist Ignaz von Born. === Noun === bornite (plural bornites) (mineralogy) A reddish mineral that tarnishes on exposure to air; it is a mixed sulfide of iron and copper with the chemical formula Cu5FeS and is an important ore of copper. ==== Synonyms ==== erubescite (obsolete) peacock ore, peacock copper (informal) ==== Derived terms ==== ==== Translations ==== === Further reading === David Barthelmy (1997–2026), “Bornite”, in Webmineral Mineralogy Database. “bornite”, in Mindat.org, Keswick, Va.: Hudson Institute of Mineralogy, 2000–2026. === Anagrams === Bertino, robinet