Bornite has a brown to copper-red color on fresh surfaces that tarnishes to various iridescent shades of blue
to purple in places. Its striking iridescence gives it the nickname peacock copper or peacock ore. Bornite
is an important copper ore mineral and occurs widely in porphyry copper deposits. It was first described in 1725 for
an occurrence in the Krušné Hory Mountains (Erzgebirge), Karlovy Vary Region, Bohemia in what is now the Czech Republic.
It was named in 1845 for Austrian mineralogist Ignaz von Born (1742–1791).
