Conclusion
The lithostratiaphy of the study area consists of a complex basement of
metasediments (argillite sandstone and wacke). Then appear the intrusion
of the Ferkéssedougou granite, granodiorite and tonalite. Later, diorite
dykes crosscut the metasedimentary and the tonalite. Gold mineralization
exhibits two forms. Quartz veins control the highest gold grades hosted
in tonalite and in contact with metasediment. This mineralization took
place during the second phase of deformation characterized by the S2
shearing foliation NNE orientation with a strong dip generally towards
the SE but also towards the NW. Finally, the mineralization is affected
by the D3 deformation induced by diorite dykes, responsible for another
gold mineralization.