Magnesite is a mineral composed primarily of magnesium carbonate (MgCO₃). It typically forms in sedimentary environments and is often found in deposits associated with ultramafic rocks. Magnesite is used in various applications, including the production of refractory materials, which are essential for high-temperature industrial processes. In addition to its industrial uses, magnesite can also be processed to produce magnesium oxide (MgO), a compound widely used in agriculture, construction, and as a dietary supplement. The mineral is often white or light-colored and can be identified by its relatively low hardness and specific gravity.