Toro Blanco is a high sulphidation precious-metal prospect with low-sulphidation overprinting hosted in Tertiary-age volcanic rocks. Disseminated precious-metal targets include high-sulphidation style replacements within silicified and vuggy silica altered sequences as well as cross-cutting, potentially porphyry-related, low-sulphidation quartz stockworks.
Details of the Toro Blanco Property
Precious-metal bearing alteration exposed at the higher elevations at Toro Blanco consists of vuggy silica and alunite typical of high sulphidation deposits. Anomalous gold concentrations are also found in low-sulphidation quartz stockworks common in lower elevation exposures suggesting a transition to a porphyry environment. Pima alteration studies indicate lower temperature clay assemblages predominate within the high-sulphidation target suggesting the best precious-metal concentrations could lie at shallow depth where higher temperatures would be expected. Over-printing of low sulphidation stockwork-hosted mineralization indicates multiple precious-metal mineralizing events and the possibility of remobilization and upgrading.
Geochemical sampling from Toro Blanco has identified a zone of anomalous gold values within an area 1 by 1.5 kilometres. Values range from 0.02 to 1.0 g/t gold. Detailed geologic mapping followed by geophysical targeting are recommended.