Institute, Russian Academy of Sciences, Moscow, Russia SPRINGER-SCIENCE+BUSINESS MEDIA, B.V. A C.I...Assemblages of Components 2.2.1.9. K-Ar Age of the Mn Oxyhydroxide (Cryptomelane) Ores 2.2.1.1 O. Problem...Alterations (Lateritization) 2.2.3. Some West African Deposits (Nsuta, Ghana; Mokta, Cöte d'Ivoire; Tambao, Burkina...Giant Manganese Ore Accumulations in Paleokarst: Deposits of the Postmasburg Region, Griqualand West, Cape...The General Features 3.3.2.2. The Main Manganese Deposits: Bishop, Lohatlha, Glosam, and Kapstewel, Postmasburg |