Colombian Mines Corporation

Colombian Mines Corporation

June 28, 2011 12:42 ET

Colombian Mines Continues to Expand the Mineralized Footprint at El Dovio with Underground Intervals Assaying Up to 9.18 g/T Gold Along 21 Meters

VANCOUVER, BRITISH COLUMBIA--(Marketwire - June 28, 2011) -Colombian Mines Corporation ("Colombian Mines" or "the Company") (TSX VENTURE:CMJ) is pleased to announce underground channel sampling from the Sabana Blanca adit has returned intervals to 21 meters grading 9.18 grams of gold per metric tonne (g/T Au), with a higher grade zone averaging 13.58 g/T Au over 6 meters at the Company's El Dovio project in Colombia. Other significant results include 18 meters averaging 4.98 g/T Au and 7 meters averaging 4.81 g/T Au.

El Dovio Underground Channel Sample Results
Table 1 below summarizes the sampled length and gold grade of the best channel sample results to date in the Mina Sabana Blanca underground workings.

TABLE 1. El Dovio (Mina Sabana Blanca) Channel Samples
AreaSampled Length (meters)Gold (g/T)
Main Tunnel21.09.18
1 XCUT NORTH7.04.81
2 XCUT EAST18.04.98

All channel samples were diamond saw cut and taken on uniform 1 meter intervals along both sides of the adit. As a result, the reported results do not represent a true thickness of mineralization, but instead generally demonstrate the continuity of gold mineralization along trend. Although only final gold results are reported here, the Company expects to receive final multi-element data soon that will include copper, silver and zinc assays. Additional underground sampling is currently underway. When properly mapped and sampled, underground workings such as those in the Sabana Blanca adit, provide a "walk through drill hole" and the opportunity to see the deposit geology in three dimensions. For a specific portion of the deposit, this information is much more detailed than drill hole data and provides important primary data for the overall deposit model.

As shown by the updated map on the Company website (, the Sabana Blanca adit is located just north of the western end of a larger zone of surface exposed mineralization, where the Company previously reported cutting values in excess of 104 g/T gold. The newly sampled mineralization in the adit extends the overall zone approximately 30 meters north of the limits previously interpreted by the Company. Additional mapping, sampling and interpretation are being completed to determine if the recently sampled zones in the adit represents a significant widening of the mineralized trend at El Dovio, or a separate high grade "vein" extending outward along a structure from the main zone.

The Company has shipped three composite samples to McClelland Labs of Reno, Nevada for column leach tests. As previously announced by the Company, preliminary results indicated promising metallurgical responses indicating that oxidized, mixed and sulfide mineralization are potentially amenable to heap leaching with modest reagent consumption averaging .48 kg of cyanide per tonne of ore treated.

The Company now has four diamond drills at Yarumalito where unseasonable rains and mud slides curtailed drilling earlier this year. Results will be announced as they are received and modeled by the Company's staff and consultants.

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 three centimeters, two centimeters deep and one meter in 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.

Contact Information

  • Colombian Mines Corporation
    Nathan A. Tewalt
    (604) 669-0868 (Vancouver)

    Colombian Mines Corporation
    Robert G. Carrington
    (604) 669-0868 (Vancouver)

    Colombian Mines Corporation
    Sharon Hebgin
    Corporate Communications
    (604) 649-9195

    Colombian Mines Corporation
    Kim C. Casswell
    Corporate Secretary
    (604) 669-0868