MOUNT PEARL, NEWFOUNDLAND -- (Marketwire) -- 12/20/12 -- Cornerstone Capital Resources Inc. ("Cornerstone") (TSX VENTURE: CGP) (FRANKFURT: GWN) (BERLIN: GWN) (OTCBB: CTNXF) announced today results from prospecting and geological mapping surveys carried out on its wholly owned Cana Brava property located in south-central Ecuador.
-- Two large high sulphidation (HS) epithermal gold-silver zones defined by extensive hydrothermal breccia and silicic ribs developed within an advanced argillic alteration lithocap-- West Zone (Cana Brava Breccia) is developed over a 2.5 km by up to 2 km area and is coincident with a 3 km by 1 km multi-element soil geochemistry anomaly-- East Zone shows a similar HS system measuring 1.75 km by 1 km which is open in most directions-- 334 rock samples collected with multiple samples returning anomalous gold (18 samples greater than 1 g/t Au, 36 samples greater than 0.5 g/t Au) and silver (13 samples greater than 100 g/t Ag, 35 samples greater than 30 g/t Ag)-- Base metals and epithermal pathfinder elements are strongly anomalous throughout the Cana Brava Breccia-- Porphyry gold-copper target identified below the Cana Brava Breccia
Brooke Macdonald, President of Cornerstone, stated "Exploration results to date on the Cana Brava property show good potential for significant epithermal gold and silver mineralization with strong indications of porphyry style mineralization at relatively shallow depths. Currently we are seeking a partner to help fund additional exploration surveys in order to develop drill targets. It is noteworthy that despite the excellent potential, no drilling has ever been carried out on the property".
The 1,150 hectare Cana Brava property is located near the community of Gualel in the province of Loja, 100 km south southwest of the city of Cuenca. The project area is situated in the Ecuadorian Andes on the east side of the Cordillera Occidental at elevations ranging from 2,950 m to 3,650 m above sea level. Access from Cuenca is provided by paved roads and a secondary gravel road to Gualel, from which trails provide access to the property. Maps showing the location, geology and exploration results for the Cana Brava property can be viewed at http://cornerstoneresources.com/i/pdf/NR12-27CanaBrava.pdf.
Regional Geology and Mineralization
The Cana Brava property is underlain by Tertiary age sequences of mafic and felsic volcanic flows, tuffs and sediments which are intruded by granodiorite and diorite batholiths and stocks. Structurally the area is bounded by two major north-northeast trending regional faults, the Giron Fault which cuts directly through the property, and the Catamayo Fault located approximately 15 km to the east. Cross cutting transverse faults developed within this north-northeast structural trend commonly control the emplacement of intrusions and development of associated porphyry and epithermal alteration and mineralization. Cana Brava is located in the southwestern part of a northwest oriented belt of epithermal precious metal prospects and deposits.