The Mineralogy, Geochemistry and Origin of the Supergene Manganese Occurrences in the Southern Minas Gerais, Brazil

In equatorial and tropical regions, supergene mineral deposits created during water/rock interactions are found. Simply put, these formed through the accumulation of low solubility ions or preservation primary minerals. The manganese (Mn) examples economic importance associated with chemical weathering processes. Brazil, Southern Brasilia Orogen (SBO) was generated collision between Paranapanema Craton passive margin São Francisco Craton. southern Minas Gerais (MG), several Mn occurrences hosted in SBO, which were originated gondites belonging to Amparo Complex. Here, we studied MG, more specifically municipalities Ouro Fino Careaçu. MnO contents ranged from 25.50 28.40 wt% at 16.80 21.20 These have a diverse assemblage, being composed spessartine, quartz, Mn-oxides, goethite kaolinite. various minerals due spessartine incongruent dissolution hollandites, cryptomelanes, romanechites, pyrolusites lithiophorites. Both study areas relevant for possible opening mines commercialization Mn.