Gold concentrate, or gold refining, is a process in which gold is separated from minerals, rocks, and other impurities to obtain pure gold. This process is commonly used for the extraction and separation of gold from gold mines. Gold mines consist of masses of rocks, soils, and mineral materials that contain gold and other heavy metals. Various methods, such as concentration, precious metal separation, chemical extraction, and physical extraction like flotation, are used to separate gold from these materials.