GEOLOGY & PLANETARY SCIENCE A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z                    HOME ABOUT CATEGORIES SITE MAP COPYRIGHT ADVERTISE CONTACT entire Web this site bornite Bornite. Image source: Mineralogical Information Institute A reddish-brown sulfide mineral of iron and copper (Cu5FeS4). Bornite is also called "peacock ore" because of its tarnish when fractured. It occurs widely, with concentrations in Chile, Peru, and Tasmania. It alters to chalcocite. Related category    • GEOLOGY AND PLANETARY SCIENCE Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) BACK TO TOP