23 mai 2012
Columbus Gold Significantly Extends Mineralization in Step-Out Hole at Paul Isnard
Vancouver, British Columbia, Canada, May 23rd, 2012
- Columbus Gold Corporation (CGT: TSX-V - "Columbus Gold") is pleased to announce the latest assay result of a step-out, diamond core hole drilled at the Montagne d'Or gold deposit on its 100% owned Paul Isnard Project in French Guiana. Drill hole MO 12-73, on Section 2600E, contains an intercept of 1.94 gpt gold along 25 meters (true width approximately 15 meters).
The intercept was obtained from a hole oriented south at 50°, that entered the Upper Felsic Zone ("UFZ") at an approximate vertical depth of 250 meters from surface. Results from DH-73 are considered particularly significant in that they confirm the extension of the UFZ and the Montagne d'Or deposit 150 meters west of the resource area defined by past drilling.
A drill plan and long sections of the UFZ and LFZ can be viewed at the following link:
The Montagne d'Or gold deposit at Paul Isnard is an east-west striking, south dipping, tabular body made up of two sub-parallel zones of gold mineralization, designated Upper Felsic Zone (UFZ) and Lower Favorable Zone (LFZ), hosted by laminated felsic volcanics within a Pre-Cambrian greenstone sequence. Prior to Columbus Gold's involvement the deposit was partially outlined by 54 holes, totaling 10,600 meters, in the late 1990's. Based upon that past drilling, the deposit contains a 43-101 inferred gold resource of 1.9 million ounces within 36 million tonnes grading 1.6 gpt gold (0.4 gpt cut-off) within a mineralized zone about 2,000 meters long, averaging about 70 meters thick and tested to variable depths of between 100-150 meters. The deposit is open at depth, internally between widely spaced holes and, in part, along strike.
Columbus Gold's independent consultant and Qualified Person, John Prochnau (P. Geo), B.Sc. (Mining Engineering), M.Sc. (Geology), has reviewed and approved the technical content of this news release.
About Columbus Gold
Columbus Gold is a gold exploration and development company operating in French Guiana and Nevada. In French Guiana, Columbus Gold controls a 100% beneficial interest in the Paul Isnard gold project, which hosts a 43-101 compliant 1.9 million ounce inferred gold resource with substantial expansion potential. In Nevada, Columbus is a prolific project generator focused on advancing projects either through earn-in agreements to industry partners or on its own where exploration risk is minimized and potential is particularly promising. Columbus Gold's President, Andy Wallace has a long and successful history of gold discovery and mine development. Columbus currently has 10 of its 25 strategically located gold projects in Nevada farmed-out to various mining companies.
ON BEHALF OF THE BOARD,
Robert F. Giustra
Chairman & CEO
Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.
For more information contact:
Forward looking statements
This release contains forward-looking information and statements, as defined by law including without limitation Canadian securities laws and the "safe harbor" provisions of the US Private Securities Litigation Reform Act of 1995 ("forward-looking statements"), respecting drilling, and Columbus Gold's general exploration plans. Forward-looking statements involve risks, uncertainties and other factors that may cause actual results to be materially different from those expressed or implied by the forward-looking statements, including without limitation, the ability to acquire necessary permits and other authorizations; environmental compliance; cost increases; availability of qualified workers and drill equipment; competition for mining properties; risks associated with exploration projects, mineral reserve and resource estimates (including the risk of assumption and methodology errors); dependence on third parties for services; non-performance by contractual counterparties; title risks; and general business and economic conditions. Forward-looking statements are based on a number of assumptions that may prove to be incorrect, including without limitation assumptions about: the design of the drill plan; general business and economic conditions; the timing and receipt of required approvals; availability of financing; power prices; ability to procure equipment and supplies including without limitation drill rigs; and ongoing relations with employees, partners and joint venturers. The foregoing list is not exhaustive and Columbus Gold undertakes no obligation to update any of the foregoing except as required by law.
Quality Assurance/Quality Control
The technical information herein has been prepared in accordance with Canadian regulatory requirements set out in National Instrument 43-101 by John Prochnau, an independent consultant of Columbus Gold and the Qualified Person for the Paul Isnard project (the "QP"). For additional information regarding the Paul Isnard project, please see the Technical Report on Columbus Gold's website at www.columbusgoldcorp.com. (The NI 43-101-compliant technical report on the Paul Isnard Project entitled "Updated NI 43-101 Technical Report, Paul Isnard Project, French Guiana" dated effective February 1, 2012 and updated February 21, 2012, prepared by Bart A. Stryhas C.P.G. Ph.D. of SRK Consulting (U.S.), Inc., who is a independent of Columbus Gold.)
Mr. Prochnau is responsible for quality control at the Paul Isnard project and has verified the data being disclosed herein, including sampling, analytical and test data underlying the information or opinions contained in the written disclosure, in consultation with Andre Adam, one of Columbus Gold's Geologists and the Manager in French Guiana. The QP personally verifies the results of the quality assurance and quality control samples. The data presented herein was verified as follows: drill assay data and the average intercepts of gold mineralization were inspected, plotted on geological log sheets, averaged manually and checked to produce the drill result released. The drill hole was also plotted on the relevant cross section with existing drill holes, to confirm and validate the interpreted mineralized zones, for purposes of correlation, in the released information. All blank samples and standards were verified against existing standards, and then the blank samples and standards of the lab were verified. Each sample is one meter long, and all standards were found to be within acceptable limits. Gold values were compared with the logging of the rocks by an experienced professional geologist and to the presence of visible alteration and mineralization and percentage of sulfide in this type of mineralization (disseminated to semi-massive sulfides and occasionally massive sulfide, also visible gold), and a strong correlation between amount of sulfides and amount of gold was found. Columbus Gold has used the laboratory of FILAB Suriname with respect to the analysis of its samples, and the processing, handling, documentation, archiving and reporting procedures are in accordance with common procedures in the mining industry. Mr. Adam and other Columbus Gold geologists or technicians are on site during drilling, examining individual drill holes and observing the procedures to maintain chain of custody of the samples and the method of processing. The drill hole was completed at Montagne d'Or, logged by professional and experienced geologists, and then sawn to measurements, taken from the drill hole whose collar location has been surveyed using hand-held GPS.
The location of the hole will be verified by an independent topographic mapping and surveying company by mid-2012. The drill hole has also been surveyed from top to bottom using industry-standard, down-hole surveying techniques with equipment provided by the drill contractor. The drill core is sawn in half along the length after geological logging, and samples are bagged for analyses in one meter increments. The saprolite material, a minor portion of the drill holes, is put in textile bags by meter, the rock is put in plastic bags and sealed. 10 samples are then combined for shipping in larger bags. All of the samples are sent from the drill site in plastic boxes, covered and sent 5km to the camp every day, from the camp to Cayenne by road or by air, and then the same transporter carries the samples every Thursday to Paramaribo, the location of the geochemical lab. Only a few of the one meter samples exceed 30 g/t Au and these are cut to 30 g/t and reported both cut and uncut, as done by the independent engineering firm, SRK, in its treatment of assays by previous operators and used in the Technical Report. Drill work is done by the Performax, a Canadian company, by qualified workers, and drill recovery is very good, averaging 82% in the saprolite (20-30 meters in each drill hole) and 98% in the rock. The presence of faults is very rare. The samples are tested at FILAB, which is an independent laboratory working for several mining companies and which has no other relationship with Columbus Gold. FILAB takes samples of approximately 2kg size, which is dried, crushed totally (to a size of less than 3mm), divided, or split to 300g, which is then pulverized to less than 100 microns. The samples are fire assayed with a finish by Flame AAS. 30 grams of rock powder is used for each analysis.
Cautionary Note to U.S. Investors
This news release includes certain estimates that comply with reporting standards in Canada, in particular with National Instrument 43-101 Standards of Disclosure for Mineral Projects ("NI 43-101"), a rule developed by the Canadian Securities Administrators to establish standards for public disclosure concerning mineral projects. These standards differ significantly from the requirements of the U.S. Securities and Exchange Commission (the "SEC"), and resource information contained herein may not be comparable to similar information disclosed by United States companies. Certain documents disclosed Columbus Gold, including without limitation this news release, contain the term "inferred mineral resource" to comply with reporting standards in Canada. We advise United States investors that while this term is recognized and required by Canadian regulations, the SEC does not recognize it. United States investors are cautioned: (i) that the aforementioned term has a great amount of uncertainty as to its existence and as to its economic and legal feasibility; and (ii) not to assume that all or any part of the inferred resource exists. United States investors are urged to closely review the additional warnings and disclosure contained under the heading "Cautionary Note to United States Investors" in our Final Short Form Prospectus dated May 11, 2012, a copy of which may be obtained from Columbus Gold or downloaded from Columbus Gold's profile at www.SEDAR.com.