T. K. Lionel-Dimitri Boya^1,, Martial P. K. Adingra¹, Allou Gnanzou¹, Gbele Ouattara², Apo Ryana L. Diane¹, Yacouba Coulibaly¹

The Toumodi-Fètêkro belt in Côte d'Ivoire is a one of its greenstone belts which has given rise to several mines in operation, with research or development work still in progress. This study based on a compilation of existing data acquired in different sectors, aims to contribute to the improvement of knowledge on the granitoids of this area. The geochemical data have therefore been reprocessed with a view to a global interpretation of the entire belt. Terranes are formed by granodiorites, granites, granophyres and tonalites with granodiorite and granophyres like host rocks. The peraluminous and metaluminous nature of magma shows that the granitoids come from mantle and crustal sources, with type I and S granites. The main anomalies noted indicate for these granitoids a character typical of volcanic arc magmas, an enrichment in K, or even a continental source. The deposits known in the Toumodi-Fètêkro belt are linked to several hydrothermal alterations. The control of the mineralization is litho-stuctural, with hydrothermalism being of major importance.

petrogenetic synthesis, birimian granitoids, mineralization, Toumodi-Fetekro, Côte d’Ivoire