Colombian Mines Corporation

Colombian Mines Corporation

September 20, 2011 11:15 ET

Colombian Mines Expands Sabana Blanca Zone-Discovers New Mineralized Areas at El Dovio

VANCOUVER, BRITISH COLUMBIA--(Marketwire - Sept. 20, 2011) - Colombian Mines Corporation ("Colombian Mines" or "the Company") (TSX VENTURE:CMJ)(FRANKFURT:X6C) is pleased to announce that saw cut channel sampling in the El Dovio property's Sabana Blanca Zone has expanded the sampled interval in the area of Trench 2, to 68 meters averaging 4.7 grams per metric tonne gold (g/T Au). This incorporates zones previously announced in Trench 2, including a subinterval that averages 27.4 g/T Au, 8.1 g/T Ag, 0.20% Cu and 0.60% Zn over 7 meters as well as the newly sampled zone which averages 2.5 g/T Au, 4.8 g/T Ag, 0.38% Cu and 0.46% Zn over 20 meters.

In addition, two new zones of mineralization have been identified by the Company in the Sopetrana Granizales areas. Both of these new zones contain gold – silver – copper – zinc mineralization visually similar to that of the main target area at Sabana Blanca, but with a north-south trend roughly perpendicular to Sabana Blanca. Granizales lies well to the southwest of all previously known mineralization. Importantly, this is the first confirmation of significant mineralization outside of the known extent of the Sabana Blanca Zone at El Dovio and expands the projects potential. For more information, an updated map has been provided on our website at


Sabana Blanca Zone-
Expanded trenching on the east-northeast trending Sabana Blanca zone continues to increase the width of known mineralization. The new results from the 20 meter Trench 2 Extension, when combined with previously announced results, yield a combined sample interval of 68 meters averaging 4.7 grams per metric tonne gold (g/T Au), 6.2 grams per metric tonne silver (g/T Ag), 0.47% copper (Cu) and 0.45% zinc (Zn). This section of the Sabana Blanca Zone is now interpreted to have a true width of more than 55 meters and remains open to further expansion in width, length and depth. Trenching and sampling across this broader east-northeast trend shows alternating bands with variable grades of precious and base metals that remain mineralized to the existing limit of sampling. The northernmost end of the trench interval assayed 1.35 g/T Au, 4.4 g/T Ag and 0.27% Cu, while the southernmost end of the trench 68 meters away ended in mineralization containing 3.9 g/T Au, 20.9 g/T Ag and 0.54% Cu.

Sopetrana Zone-
Recent mapping and sampling has identified a highly altered and silicified, north-south trending structure almost perpendicular to the main Sabana Blanca trend. This well mineralized cross-structure averages 7.87 g/T Au, 11.82 g/T Ag, 2.1% Cu and 0.38% Zn over a 3 meter sampled true width and projects directly into the Sabana Blanca Zone. The new zone remains open to expansion in all directions, as sampling was unable to define the limits of mineralization due to cover. Additional outcrop cleaning and saw cut channel sampling are planned for this area.

Granizales Zone-
Newly discovered mineralization characterized by strong to intense silica flooding, quartz veining and abundant sulfides has been found some 630 meters to the southwest of the Sabana Blanca Zone. Saw cut channel samples returned values to 8.04 g/T Au and 1.8% Cu over 1 meter intervals in two separate samples. The extent of the mineralization is unknown due to cover, but this initial sampling provides the first evidence for other mineralized exploration targets in the area.

El Dovio Work Plan-
The Company's field crews are continuing to explore further extensions of the Sabana Blanca Zone, while finding new zones in the area with detailed geological mapping and sampling programs. In addition, the Company is completing a detailed survey of the surface topography. Following completion of the surface topography and the establishment of tight survey control, the Company will conduct geophysical surveys over known mineralized zones that will be integrated with geological and geochemical results to select and prioritize targets for follow-up drilling.


The Company has delivered approximately 1.5 metric tonnes of material to McClelland Metallurgical Laboratories of Reno, Nevada for bulk density and metallurgical test work. Column leach tests are underway on this material to determine amenability to conventional heap leach technology. This work expands on preliminary studies where gold extraction of approximately 90% in oxide, 81% in mixed and 50% for sulfide gold mineralization have been previously reported by the Company.

The Company has contracted with Canadian Drilling Corporation to mobilize two drills to Yarumalito to supplement the current drill contractor. Mobilizing these additional drills will speed drill production that has been delayed by weather and other issues. CMJ personnel are also working with the new contractor to add up to 2 additional core rigs later in the program as they become available.

Yarumalito Work Plan-
The Company continues its drilling program at Yarumalito and anticipates a substantial increase in drill productivity as a result of our recent changes. Metallurgical work under way is scheduled to be completed by year end.

Sample Collection – Quality Control – Quality Assurance

The Company's samples are collected in accordance with accepted industry best practices. All channel samples were diamond saw cut to a nominal width of five centimeters, three centimeters deep and one meter in length yielding an average 3.7 kilograms per meter of sample length. After cutting, each sample is collected by hammer and chisel, sealed into individual sample bags, and delivered to the ALS-Chemex sample preparation facility in Medellin, Colombia. Sample Pulps are delivered by Chemex to their analytical laboratory in Lima, Peru. The Company maintains rigid QC-QA through insertion of a series of blank, duplicate and certified standards at a rate of 1:30 or higher.

Mr. Robert G. Carrington, P-Geo., a Qualified Person as defined by National Instrument 43-101 and President of the Company, has reviewed and verified the technical information contained in this news release.

About Colombian Mines Corporation

Colombian Mines Corporation is focused on the acquisition, exploration and development of high quality mineral properties in Colombia with near to intermediate term production potential. Colombia is increasingly recognized as a highly prospective, yet under-explored country with excellent discovery potential. Further information can be found on our website at

Robert G. Carrington, President

Forward-Looking Statement
Some of the statements in this news release contain forward-looking information that involves inherent risk and uncertainty affecting the business of Colombian Mines Corporation. Actual results may differ materially from those currently anticipated in such statements.

Neither the TSX Venture Exchange nor the Investment Industry Regulatory Organization of Canada accepts responsibility for the adequacy or accuracy of this release.

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