An important ore of copper composed of a mixed copper–iron sulphide, Cu₅FeS₄. Freshly exposed
surfaces of the mineral are a metallic reddish-brown but a purplish iridescent tarnish soon develops – hence it is popularly known as peacock ore. Bornite is mined in Chile, Peru, Bolivia, Mexico, and the USA.
surfaces of the mineral are a metallic reddish-brown but a purplish iridescent tarnish soon develops – hence it is popularly known as peacock ore. Bornite is mined in Chile, Peru, Bolivia, Mexico, and the USA.