MANY minerals such as manganite, sugilite, purpurite, RHODONITE, rhodochrosite, and pyrolusite.It is also found in many mineraloids such as psilomelane and wad.Most of the world's manganese ORE is produced by a few countries that include South Africa, Australia, China, and Gabon. Ninety percent of PROVEN manganese reserves are also in these four countries, BRAZIL and Ukraine.