A Mineralogical Study of Manganoan Alkali-Calcic Amphiboles from Manganese Ore Deposits

Mineralogical and Petrological Investigation of Iron Ore Deposits in North- East of Isfahan

Mineralogical and Petrological Investigation of Iron Ore Deposits in North- East of Isfahan

mineralogical and petrological investigation of iron ore deposits in north- east of isfahan

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Fungal Leaching of Manganese Ore

Bioleaching is technologically feasible for extraction of manganese from low grade ores (containing manganese less than 35% by weight). The principle involves the non-enzymatic reduction of pyrolusite [Mn(IV) oxides] to +2 oxidation state by fungi with the production of metabolites such as oxalic acid and citric acid. In the present investigation, a fungal strain, Penicillium citrinum was isola...

The Hercynian ore deposits from the Catalonian Coastal Ranges

reservas, similares procesos metalogenéticos habrian actuado en el Paleozoico Inferior del Brea. La deformación y el metamorfisme regional hercinicos no han actuado en este sector como un importante reconcentrador de menas, y la mayor parte de indicios epigenéticos Many mineralizations, showings and geochemical anomalies de edad tardihercinicaestán relacionados alas células hidrotermales have b...