Influence of structures and lithologies in the morphology and localization of Au–Ag mineralization at Martinetas deposit, Don Nicolas mine, Deseado Massif, Argentina

This work describes the structural and lithological controls that affect distribution, orientation, precipitation mechanism of mineralization in Martinetas district, from context analysis role played by geological units host mineralization. is a low sulfidation epithermal gold silver mining district located northeastern sector Deseado Massif, Argentina. The characterized numerous quartz veins, sheeted veinlets breccias, developed pyroclastic volcanic rocks Bahia Laura Volcanic Complex. fractures, faults vein systems show main factors controlling formation distribution are lithology, deformation style fault kinematics. Their interplay led to positive feedback between evolution plane aperture through time, strain localization resulting Vein orientations indicative NE-SW extensional stress field at time hydrothermal fluid ascend, which favored input pervasive flow within active fractures matrix units. Subsequently, cyclic channelized during repeated caused extensive veining filling events. A link organic matter presence system has been recorded. Knowledge set structure higher grades ore shoots constitutes information high value as an exploratory tool for region.