The lithofacies of Gombélédougou area, in southern Burkina Faso are part of the Houndé greenstone stones belt that extends over 225km long and 40km wide.
Despite the narrowness of the study area, investigations based on both field and laboratory highlight a variety of rocks that contribute to fully update the geological data base of previous work. The rocks are (i) andesites ± basaltic, andesite tufs and dacites-rhyolites for the volcanic occurrences; (ii) gabbros and quartz micro diorites in relationship with subvolcanic intrusive?; (iii) Fine pelites ± graphitic and manganiferous; (iv) granite. Magmatic events are spatially associated with tectonic and hydrothermal fluid in the form of quartz veins that host more or less free gold? Regarding their content and interest for gold, the veins which are exploited since ten years by artisanal workers, are classified into three types. The host rock is a layered andesite tuf showing pelite feature. This internal porosity is favorable for trappingmineralized fluid. Alteration mineral assemblages are:
hematite, chlorite, Fe-carbonate, limonite. At end, this exercise demonstrates the potential in mineral resources of the belt, and further works are highly recommended to insert this area in the metallogenic history of the belt.

Houndé greenbelt, Gombélédougou, auriferous vein, andesite tuf, pelite, alteration