bornite
noun
Forms bornites
- noun (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
Etymology
From Born + -ite, named after Austrian mineralogist Ignaz von Born.
Webster’s 1913
- noun A valuable ore of copper, containing copper, iron, and sulphur; --also called purple copper ore (or erubescite), in allusion to the colors shown upon the slightly tarnished surface.
Etymology [Named after Von Born, a mineralogist.]
Sources: Wiktionary · Webster’s 1913 — from the Wiktionary entry “bornite”, CC BY-SA 4.0. Details