Mercedes project contains two different types of mineralization:
- Disseminated gold and silver near surface mineralization indicative of a high-sulphidation epithermal system in volcanic rocks, confirmed by drilling at La Lamosa and by intensive sampling at Mina de Oro.
- Structurally controlled quartz/ tourmaline breccia system consisting of high-grade gold, silver and base metals mineralization, within a granodiorite batholith correlated to the different temperatures of a hydrothermal system. Intensive surface mapping and sampling identified the areas known as Salto Colorado, Noche Buena, La Cueva and La Olvidada.