Mn3O4, also known as manganese(II,III) oxide, is a chemical compound composed of manganese and oxygen. It typically appears as a black or brown solid and is used in various applications, including ceramics, batteries, and as a pigment. The compound can exist in different oxidation states of manganese, which contributes to its diverse properties. In nature, Mn3O4 can be found in minerals such as hausmannite. It is often produced through the oxidation of manganese(II) compounds or by thermal decomposition of manganese oxides. Its unique structure and properties make it an important material in both industrial and research settings.