Geology and Mineralization

 The La India project lies within the Sierra Madre Occidental (SMO) province, an extensive Eocene to Miocene volcanic field from the United States - Mexico border to central Mexico. The La India project lies within the western limits of the SMO in an area dominated by outcrops of andesite and dacitic tuffs, overlain by rhyolites and rhyolitic tuffs that were affected by large-scale north-northwest-striking normal faults and intruded by granodiorite and diorite stocks. Incised fluvial canyons cut the uppermost strata and expose the Lower Series volcanic strata. The project area is predominantly underlain by a volcanic sequence comprised of andesitic and felsic extrusive volcanic strata with interbedded epiclastic volcaniclastic strata of similar composition. The mineral occurrences present in the project area, and the deposit type being sought, are volcanic-hosted epithermal, high-sulphidation (HS) gold-silver deposits. Such deposits may be present as veins and/or disseminated deposits. The La India deposit area is one of several HS epithermal mineralization centres recognized in the region.
 

Deposits

 
Epithermal high-sulphidation mineralization at La India developed as a cluster of gold zones (Main and North) aligned north-south within a genetically related zone of hydrothermal alteration >20 km2 in area. Gold mineralization is confined to the Late Eocene rocks within zones of intermediate and advanced argillitic alteration originally containing sulphides, and subsequently oxidized by supergene processes. The North and Main zones are within 2 kilometres of each other. Surface outcrop mapping and drill-hole data so far indicate that the gold system at the Tarachi prospect is likely best classified as a gold porphyry deposit.