bornite
n. செம்புச் சுரங்கக் கலவை, செப்பிரும்புக் கந்தகை.
Bor"nite, n. Etym: [Named after Von Born, a mineralogist.] (Min.) Defn: 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.