Geological setting and types of carbonate-hosted gold deposits in the Birimian of West Africa

Abstract : The Paleoproterozoic domain in the West African Craton (WAC) encompasses numerous world-class gold deposits. These deposits are located in the volcanic and volcano-sedimentary Birimian greenstone belts ante-to syn-Eburnean orogeny in age. The orogenic-type gold mineralizations are coeval with the NW-SE compressive stage (D2) of the Eburnean orogeny. Several deposits are hosted within carbonates showing various purity and deformation degrees in western Ivory-Coast, Guinea and the Senegalo-Malian Kenieba-Kedougou Inlier. To date, the role of these lithologies in terms of preferential traps for hydrothermal and/or metamorphic gold-bearing fluids has likely been under estimated. Moreover, the typology of these deposits remains poorly constrained, in part because of their poor outcropping conditions and complex post-emplacement history.
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SGA 2015 : Ressources minérales dans un monde durable, Aug 2015, Nancy, France. 2015
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Guillaume Vic, Mario Billa. Geological setting and types of carbonate-hosted gold deposits in the Birimian of West Africa. SGA 2015 : Ressources minérales dans un monde durable, Aug 2015, Nancy, France. 2015. 〈hal-01157210〉

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