Copper and its importance
Copper exists in its elemental state, but is also found in many minerals, the most important of which include sulfide compounds (such as chalcopyrite), as well as oxides and carbonates. Copper is widely used in electrical wiring, roofing materials, various alloys, pigments, cookware, plumbing, and the chemical industry. Copper salts are used in water supply systems to control biological growth in tanks and distribution pipes and to catalyze the oxidation of manganese.