Cobaltite is a mineral composed primarily of cobalt, arsenic, and sulfur, with the chemical formula CoAsS. It typically appears as a metallic gray or black mineral and is often found in hydrothermal veins and metamorphic rocks. Cobaltite is an important source of cobalt, which is used in various applications, including batteries and alloys. This mineral is usually associated with other minerals such as pyrite and chalcopyrite. Cobaltite can be identified by its distinctive properties, including its high density and metallic luster. It is primarily mined in regions rich in cobalt deposits, contributing to the global supply of this valuable metal.