El Dorado Gold-Silver Project
The El Dorado Gold-Silver Project is located in the Pacific Coastal Plain, State of Nayarit, within a district of epithermal vein systems which is known to host high grade gold and silver in several veins. The El Dorado vein trend is the principal vein system within the property covering an area of 5 km x 3.5 km in size. Veining follows a general northeasterly strike dipping steeply to the NW. A continuous reef outcrop forms a ridge 1.5 kilometers ("km") in length. Additional discontinuous outcrops both to the NE and SW indicate a strike length of 3.5 km.
The El Dorado vein system has a history of small-scale mining from two veins. Mining in the area has been documented during the periods of: 1900 to 1927; 1965 to 1975; 1975 to 1983; and 1985 to 1990, often producing direct-to-smelter grade material. Most recently, from 1985 to 1990, material from three levels to a depth of 30 meters ("m") below the surface was shipped to the "El Venado" processing plant located near Ruiz, Nayarit, for toll treatment to produce a flotation concentrate. Historical metallurgical balance sheets from this plant indicate the grade of the material was in the order of 5 grams per tonne ("g/t") gold and 70 g/t silver.
Prospero Silver Corp. explored the El Dorado property between 2010 and 2011, through a series of comprehensive exploration programs which included historical data reviews, geological mapping, geochemical sampling, trenching and drilling. A total of 4,950 m were drilled in 28 diamond core holes to an average depth of 150 m, over a strike length of 440 m. The drilling intersected multiple steeply-dipping silicified mineralized zones extending from near-surface to the 150 metre drilled depth.