Bornite is a copper iron sulfide mineral found in hydrothermal veins and contact metamorphic rocks. It is an important ore of copper and is also known as peacock ore due to its iridescent tarnish. The term 'bornite' is derived from the German mineralogist Wilhelm Karl von Haidinger, who named it after Ignaz von Born, an Austrian mineralogist and geologist. Ores are rocks or minerals that contain valuable metals or minerals that can be mined for profit.