Gold Mineralization and Geology
Geological evidence shows that there is a considerable gold potential in the San Antonio Property beyond the resources already identified.
Two primary types of gold mineralization have been exploited on a small scale on the San Antonio Project in the past (exclusive of placer deposits), those being structurally controlled (veins) and breccia hosted mineralization, with these types often found to intermingle. The primary focus of past and likely future exploration, due to the potential for larger sized deposits, is breccia-hosted mineralization. It is thought that future additional target types may also emerge, such as skarn (as evidenced by the skarnification of the lower part of the San Antonio Formation) or other tabular bodies and more typical porphyry style or iron-oxide-copper-gold (IOCG) occurrences.
Generally, a geological model has been successfully utilized looking at breccias as a host rock and high angle structures that permit the introduction of hydrothermal fluids. Past work has shown that non-brecciated and less permeable units overlying the host help focus fluid flow in the underlying unit, a desired but not required component of the mineralization model. The presence of andesite/diorite dikes is also considered favorable in the model, as these have been found to be spatially related to gold mineralization.
Gold exploration to date has focused on the breccia-hosted mainly sulphide bearing gold mineralization at California, Golfo de Oro and Centerario (both along the Realito Structure) and at Cerro Sapuchi, a breccia hosted near surface oxidized gold mineralization