Crusts 2.2.1. Model Test Area: Groote Eylandt Deposit, North Australia 2.2.1.1. Introduction 2.2.1.2...Assemblages of Components 2.2.1.9. K-Ar Age of the Mn Oxyhydroxide (Cryptomelane) Ores 2.2.1.1 O. Problem...11. Conclusion 2.2.2. Model Test Area: Moanda Deposit, Gabon, West Africa 2.2.2.1. Introduction 20 20...Accumulation of the Karst Ores, the Urkut Manganese Deposit, Hungary (Mineralogy, Geochemistry, and Genesis)...Genesis of the Manganese Ore Accumulations The Other Mn Ore Accumulations in the Oxidation Zone and Paleokarst |