Bornite Bornite Bornite, also known as peacock ore, is a sulfide mineral with chemical composition CuFeS that crystallizes in the orthorhombic system (pseudo-cubic). 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 along with the more common chalcopyrite. Chalcopyrite and bornite are both typically replaced by chalcocite and covellite in the supergene enrichment zone of copper deposits. Bornite is also found as
Ore Mountain Basin Ore Mountain Basin The Ore Mountain Basin or Erzgebirge Basin () is a natural region in the German federal state of Saxony, that is part of the Saxon Lowland. To the north it borders on the Mulde Loess Hills and to the south on several natural regions in the Saxon Highlands and Uplands. The basin is a structural depression running from northeast to southwest in the Ore Mountain peneplain that is filled with Devonian and Carboniferous sediments. The main communications from the Ore Mountains follow the valleys downhill and are collected by a major routeway to the north that follows