Africa hosts just over 80 percent(%)of the world’s known land-based ore resources of manganese metal and produced some 41.1%of the 18 million tonnes(Mt)of manganese metal in ores,that was mined during 2014.The deposi...Africa hosts just over 80 percent(%)of the world’s known land-based ore resources of manganese metal and produced some 41.1%of the 18 million tonnes(Mt)of manganese metal in ores,that was mined during 2014.The deposits are mainly of sedimentary and supergene origin comprising four major types,namely banded iron formation(BIF)-hosted,black shale-hosted,oolitic and supergene/karst-hosted deposits.展开更多
文摘Africa hosts just over 80 percent(%)of the world’s known land-based ore resources of manganese metal and produced some 41.1%of the 18 million tonnes(Mt)of manganese metal in ores,that was mined during 2014.The deposits are mainly of sedimentary and supergene origin comprising four major types,namely banded iron formation(BIF)-hosted,black shale-hosted,oolitic and supergene/karst-hosted deposits.
