Iourirne gold deposit is located 260 km to the southeast of Agadir, in Tagragra of Akka inlier (Western Anti-Atlas). The gold mineralization occurs in quartz veins associated with shear zones occurring in E-W direction and cut across the Early Neoproterozoic formations, especially from the dykes of diorite to quartz diorite in the direction from Northeast-Southwest to East-West. Gold is relatively more concentrated in the microcrystalline quartz type (QII). The paragenesis linked to this stage is composed of arsenopyrite, pyrite, pyrrhotite and chalcopyrite. The likely fluid of the establishment of Iourirne gold mineralization is a type L aqueous fluid with a homogenization temperature of 180 – 260°C (mode of 217°C) with a low salinity. This gold mineralization has been placed in the quartz veins of shear zones as a result of the paleofluids interaction flowing under the effect of thermal gradients and tectonic motion operating on fault-valve with magmatic and metamorphic surrounding rocks.