Composition: Copper iron sulfide
Nomenclature: Named after the Austrian mineralogist, I. von Born.
Industrial Uses: Copper ore.
Additional Notes: A major ore of copper. Also known as peacock ore and peacock copper due to a surface tarnish that produces an iridescent rainbow of colors similar to the effect of oil on water.
Chile : Scott 1179c : 150 pesos : 9 Aug 1996
Bornite; Calcite