TORONTO, CANADA, – African Gold Group, Inc. ("AGG" or the "Company") (TSX VENTURE:AGG) is pleased to announce that a team of engineers, under the direction of Bumigeme Inc., has completed the metallurgical test work associated with processing a total of 128 composite reverse circulation ("RC") drill intervals that emulate the Kobada deposit from surface down through to fresh bedrock. All samples are compiled from Reverse Circulation ("RC") drill cuttings that represent between 30 meters and 50 meters of drill intercepts, derived from one or more holes, within a specific horizon or layer of mineralization, within the deposit. Each of the processed samples weighed between 0.8 to 1.5 metric tonnes. The longer the drill intercept(s) for a given sample the greater the weight of the respective sample.
A total of 500 samples had originally been identified by AGG's technical team for processing through a fully constructed and commissioned pilot plant. The plant, specifically designed for metallurgical research, has a capacity throughput of up to 2 tonnes per hour.
Metallurgical Engineers, onsite at Kobada, have reached a consensus that further testing of composite bulk samples of RC drill intercepts, beyond the 128 samples just completed, would be redundant. Essentially, the 128 processed samples represent testing the Kobada deposit over 800 meters of drilled strike length from surface through the oxidized profile measuring approximately 100 vertical meters in depth, into fresh bedrock.
Significantly, the average grade of the 128 sample population that has just been processed through the gravimetric pilot plant was approximately 0.4 g/t Au, based on Leachwell given grade. Furthermore, 75 of the 128 sample population, representing 59% of the total sample population, had a grade that was less than 0.3 g/t Au or below cutoff grade and therefore classified as waste material, based on sample support derived from RC drilling and lab results based on 2 kg Leachwell analysis.
The Company is pleased to report that visible gold ("VG") has been reported in 100% of the concentrates as well as 100% of the tails of the 128 bulk samples that have been processed through the gravimetric pilot plant. AGG's Senior Geologist, Pierre Lalande reports that approximately 50% of the 128 sample concentrates contain a range of five to six coarse gold grains that collectively comprise greater than 50% of the weight of visible gold contained within the respective concentrate. The balance of the gold contained within the respective concentrate from the above stated population consists of a range of 200 - 300 grains of fine gold.
The three primary objectives of the metallurgical test program are to validate the following:
Each of the 128 samples that have been processed through the gravimetric pilot plant will be subjected to 1,000 g screen metallic fire assay of the head sample, as well as, the concentrate(s) and the tail(s). AGG anticipates all samples associated with this body of metallurgical test work will be shipped to the lab prior to year end. Test results will be reported upon receipt of results from the lab.
The results of this body of metallurgical test work represent an important phase of work that is essential to concluding AGG's Feasibility Study for a 1,500 tonne/day gravity (gold recovery) plant for Kobada.
Click here to view a gallery of images of AGG’s Pilot Plant - onsite at Kobada, Mali.
It is important to note that 100% of the mineralized material from surface through to the lower saprolite horizon is completely oxidized. It is anticipated that the transition zone of the deposit will also be amenable to a gravity process of gold recovery as it is significantly oxidized. Of equal importance in anticipating a high gold recovery rate utilizing gravity processing at Kobada is the fact the oxide zone does not require grinding (only scrubbing). Furthermore, all previous metallurgical test work, including laboratory tests of bulk sample(s) and field testing of approximately 1,200 samples, with an average weight of 10 kg per sample, derived from RC drill cuttings from various layers of the deposit, have yielded high rates of gold recovery, utilizing gravity processing.
AGG's technical team has shifted its focus to generating bulk samples that are derived from the lateritic profile of the deposit. The lateritic profile measures in a range of 1 meter, up to approximately 10 meters in total thickness and is situated immediately below the iron enriched surface of in situ material. As of this date, AGG has processed a total of four, one tonne samples, from the lateritic profile. The processing of all four samples yielded visible gold in both the concentrate(s) and the tails, of each respective sample. One of the four samples was generated from the Gossokorodji ("Gosso") region, situated 5 kilometers east of the Zone 1 main deposit.
Multiple grains of coarse gold were observed and the total visible gold content was measured to weigh 1.51 g/t Au.
AGG notes the presence of an abundance of evidence, consisting of historical and current artisanal mining that would suggest a significant resource, contained within the first 10 meters of the Kobada concession, may have not been detected by analytical procedures to date, due to the nugget effect. Testing bulk samples from this region over several kilometers of strike length and laterally for kilometers across strike will be our immediate focus.
Click here to view the complete press release detailing AGG’s updated resource estimate, published June 18, 2013.
African Gold Group, Inc., based in Toronto, Canada, is fully focused and committed to putting its Kobada, Mali gold project into production.
Additional Information is available on www.sedar.com or at
AFRICAN GOLD GROUP INC.
151 Yonge St.
Neither 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.
This press release includes certain "Forward-Looking Statements." All statements, other than statements of historical fact included herein, including without limitation, statements regarding future plans and objectives of African Gold Group; and statements regarding the ability to develop and achieve production at Kobada are forward-looking statements that involve various risks and uncertainties.
There can be no assurance that such statements will prove to be accurate and actual results and future events could differ materially from those anticipated in such statements. Important factors that could cause actual results to differ materially from African Gold Group’s expectations have been disclosed under the heading "Risk Factors" and elsewhere in African Gold Group’s documents filed from time-to-time with the TSX Venture Exchange and other regulatory authorities. African Gold Group disclaims any intention or obligation to update or revise any forward looking statements whether resulting from new information, future events or otherwise, except as required by applicable law.
Michael A. J. Nikiforuk - Executive Director, Founder & Past President