Yauco Summary

The Yauco project comprises of 7,000 hectares of mining concessions adjacent to the southern boundary of GR Silver Mining’s El Habal project. The Yauco project lies on the western fringe of a mining district named Vanilla, which has seen 200+ years of historical artisanal mining activity. Currently, there are three small scale underground mines that are going back into production and three abandoned underground mines in Vanilla.

GR Silver Mining has completed a preliminary survey of the concession, identifying five compelling gold-silver anomalies. Initial reconnaissance has identified NW structures hosting disseminated and vein-style gold and silver mineralized zones.


Regional geology

The Yauco project occurs on the edge of a major Cretaceous granodiorite, which intrudes the lower and upper volcanic sequence.  There is local evidence of metasomatism, a hydrothermal base and precious metals mineralization style.

The Villa Union project comprises 5 600 hectares of mining concessions, located 12 km north of the Rosario mine, Minera Penoles S.A de CV is a major Mexican mining company in a significant historical mining district. Villa Union’s attractive location covers 5 km of the western edge of the Panuco Graben, and 7 km of the western edge of the Rosario Graben, host to the Rosario mine.  This ideal location provides an immediate target for precious metals exploration.

The Villa Union project hosts predominantly hydrothermally altered (prophylitc-argilic) olygocene porphyritic andesites. On the NE boundaries of the Villa Union concessions, near the edge of the Panuco graben, prevalent tertiary volcanic structure occurrences are found, commonly andesites, which correlate to the upper volcanic sequence.  These structures typically host gold and silver mineralization in the Sierra Madre Occidental. There are major tectonic structures in the center of the Villa Union concessions, offering further evidence of potential hydrothermal fluid conduits and potential sites for exploration.


Exploration status

GR Silver Mining has recently completed regional reinterpretation studies of data published by the SGM (Geological Survey of Mexico).  Data sets covered by the Company’s reinterpretation study program include aeromagnetic data (complete) and geological maps at a 1:50,000 scale (still underway). Follow up targets have been generated by combining the aforementioned studies with detailed analyses of stream sediment and surface sampling programs completed by previous companies.


Marcio Fonseca, P.Geo., Chief Operating Officer & Director of the Company, is the Qualified Person under National Instrument 43-101, Standards of Disclosure for Mineral Projects, responsible for the preparation of the technical information included in this website and for the supervision of field activities related to the Company projects.