Cerro Blanco
Description
Cerro Blanco is porphyry copper-gold target with similarities to the zones being produced at CODELCO's El Salvador deposit located approximately 15 km to the northeast. Cerro Blanco is highlighted by over 250 vertical meters of exposed alteration visible from the river valley floor forming the northern border of the Salvadora property and also by a highly visible alteration cap on its surface. Zones of alteration are visible from the valley floor over a strike length of over 2 km with a main feature that is approximately 1.5 km wide.
The Cerro Blanco Target is a large zone of strong porphyry style hydrothermal alteration enriched in gold and copper at surface and underlain by a significant IP chargeability anomaly.
Significantly, the Cerro Blanco Target has never been drill-tested, though it shows all the classic hallmarks of a large, mineralized porphyry system.
cerro blanco ip
Surface Work
San Lorenzo conducted 2 soil and rock geochemical sampling programs that were followed up with an induced polarization survey. Although 6 km of IP was preformed, the results from only 4 line-kilometers of the 2 southern lines were usable as the northernmost line was in the river valley where the ground was too conductive to allow significant penetration due to surface salt accumulations from river flooding events.
Cerro Blanco Sampling Program
This map is a compilation of the anomaly identified by the IP survey together with the location of rock and soil samples that are anomalous for copper and gold collected during all 3 of the surface sampling programs completed to date by San Lorenzo. Results show a very large-scale copper/gold anomaly in soils and rocks; 1.5 by 2 kilometres and open in several directions, underlain by IP chargeability anomalies. The combination of the large lithocap zone with anomalous copper and gold values makes Cerro Blanco a compelling drill target.
A third campaign of soil sampling consisting of 57 samples was completed in December of 2023.
San Lorenzo Property - Historical Surface Workings
The existence of significant alteration at the Cerro Blanco target, together with the mineralization that San Lorenzo has encountered in its drilling to date at Salvadora, continues to affirm to the management of San Lorenzo the existence of several hydrothermal systems that have produced significant porphyry and epithermal style mineral deposits over much of the Salvadora property.