https://commons.ru.ac.za/vital/access/manager/Index ${session.getAttribute("locale")} 5 Mineral paragenesis of olmiite/poldevaartite and rhodochrosite/shigaite occurrences in the Kalahari Manganese Field, and their relation to the formation of high-grade manganese ore of Nchwaning II mine, Black Rock, South Africa https://commons.ru.ac.za/vital/access/manager/Repository/vital:71943 Thu 04 Apr 2024 20:04:46 SAST ]]> Origin and metallogenic significance of alkali metasomatism in the Paleoproterozoic Mapedi Formation, Kalahari Manganese Field, South Africa https://commons.ru.ac.za/vital/access/manager/Repository/vital:72170 Sat 20 Apr 2024 19:54:54 SAST ]]>