It is established that the new (discovered in 2003) active hydrothermal ore field is located on the surface of tectonic terrace at the foot of rift valley western bank in the region of edge plutonic fracture intersection with the zone of sub-latitudinal tectonic deformations. The hydrothermal field is the first one discovered in the western bank of rift valley, the 'deepest' in Atlantic Ocean and the third of associated with plutonic rocks of the gabbro-peridotite complex. The preliminary data indicate differentiated, long-term and complex character of ore-formation process, which manifests in the zonal structure of ore bodies.