Manganese ore is a carbonate mineral, which often contains iron, calcium, zinc and other elements. And these elements often replace manganese. Therefore, pure rhombic manganese ore is rare. Manganese ore is also a source of manganese production of ferromanganese alloys. They are usually granular, massive or kidney-shaped, red, and the surface is brownish-black after oxidation. It has a glass luster. Large grains and transparent colors can be used as gemstones. Small and translucent aggregates can be used as jade carving materials.
