The first three holes drilled by Gran Colombia Resources (GCRI-C) have intersected near-surface, gold mineralization at the company’s concessions in the Marmato district of Colombia, 150 km northwest of Bogota.
The program began in June and is focused on the Echandia property in the central part of the junior’s 37,000-ha land package in the Marmato district.
The new zone overlies a previously announced preliminary inferred resource block (104 million tonnes grading 1.12 grams gold-equivalent), derived entirely from previous channel sampling of three adits.
The first three holes, collared in geochemical anomalies, confirmed the presence of a new zone of mineralization extending from surface to an average depth of 87 metres. The mineralization is contained in saprolite, associated with intense argillic and propylitic alteration in andesite and dacite intrusives.
The first hole returned 116 metres, starting at surface, grading 0.75 gram gold and 10.49 grams silver per tonne (0.87 gram gold-equivalent), as well as 65.4 metres of 0.57 gram gold and 31.5 grams silver (1 gram gold-equivalent) from 127.6 to 193 metres.
The second returned 117 metres of 1.3 grams gold and 15.02 grams silver (1.56 grams gold-equivalent), starting at surface. The third intersected 81.3 metres of 0.63 gram gold and 58.2 grams silver (1.4 grams gold-equivalent) from 4.07 to 85.4 metres.
The company plans to continue drilling at 50-metre centres to cover the soil anomalies, which extend over an area measuring 300 by 400 metres. It also plans to bring in two rigs for the purpose of underground drill-testing in areas between and below the adits.
Gran Colombia has also sampled the Cien Pesos target, an area of small miner workings southeast of Echandia. A total of 2,014 metres of underground development was channel-sampled. Results ranged from a low of 1.94 grams to a high of 12.03 grams, with many in the 3-5-gram range.
These and Gran Colombia’s other properties in Colombia total 260,000 hectares. The junior is well-funded, with more than $16.5 million in its treasury.
Be the first to comment on "Marmato drilling cuts mineralization"