A. Geological map of the area around the SADC base metal-Sb-Au occurrence located in the very low dipping anticline southern flank. The SADC quarry is located within an important N160-150-E-trending fault corridor. B. Simplified and synthetic structural framework of the SADC mineralizing system. Second-order faults (e.g. Riedel shear) are not shown. All stages of hydrothermal fluid flows are channelized by vertical strike-slip faults. Intersection of this fault system with OIH triggered the intense massive sulphidation of this reactive horizon.