An investigation of tectonic controls of gold mineralisation in quartz veins at Tarcoola recommended the further study of : - brecciated zones (in which reefs and veins exhibit an increased gold concentration) to establish their structural relationship to primary quartz veining; - the relationship of strike-slip faults, which control the structural plane of subsequent veins, and the contact between basement and the Tarcoola Formation, as an increased content of gold is expected in the contact zone and its intersection with faults can result in gold enrichment of quartz veins.