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. (http://media3.marketwire.com/docs/agg1217fig1.jpg)


The three primary objectives of the metallurgical test program are to validate
the following:




1.  Demonstrate that analyzing the gold grade based on 0.8 to 1.5 metric
    tonne samples should result in a higher gold grade being reported as
    compared to analyzing the same drill interval based on 50 g FA and/or 2
    kg Leachwell analysis. (It is important to increase both the "sample
    support" (volume of material) and "aliquot" (amount of material actually
    analyzed) to counteract the "nugget effect" at Kobada.)

2.  Generate further confirmation that a Bulk Mining model applies to Kobada
    and that all material contained within the mineralized structural
    corridor should be processed through the gravimetric gold recovery plant
    - including material that is defined as waste based on drill sample
    support and Leachwell analysis.

3.  Study and evaluate the gravimetric process for gold recovery for the
    Kobada project with a process that emulates commercial operation. It
    should be noted that gravimetric process modifications will ultimately
    be adopted to reduce gold content contained within tailings.



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.


Please activate the link below to view a gallery of images of AGG's Pilot Plant
- onsite at Kobada, Mali.


http://www.africangoldgroup.ca/index.php?option=com_joomgallery&func=detail&id=74&Itemid=56#joomimg


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. 


Metallurgical Work To Focus On Testing Bulk Samples From Lateritic Profile 

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.
(http://media3.marketwire.com/docs/agg1217fig2.jpg)


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.


Updated Resource Estimate Highlights (June 18, 2013)



--  2,306,000 Oz Au Measured and Indicated resources (contained within 80.61
    million tonnes at 0.87 g/t Au using a 0.3 g/t Au cutoff) derived from
    drilling on 25m x 25m centers over a total of 3,200 meters of strike
    length between sections 600S and 3,800S, representing an 88% increase in
    infill drilled strike length relative to the 1,700 meters of strike
    length reported in the 2011 Inferred resource estimate.

--  542,000 Oz Au Inferred Resource (contained within 17.88 million tonnes
    at 0.94 g/t Au, using a 0.3 g/t Au cutoff), predominantly contained from
    within the Sulphide portion of Zone 1. Included, 186,000 Inferred ounces
    reported for the Foroko North Deposit (5.16 million tonnes at 1.13 g/t
    Au at a 0.3 g/t Au cutoff). Foroko North is a satellite deposit situated
    on a separate and distinct structure from Zone 1. It represents one of
    seven airborne geophysical targets generated by the 2010 airborne
    survey.

--  Average grade of 0.87 g/t Au reported in the updated resources estimate
    represents a 10% increase in grade as compared to the average grade of
    0.79 g/t Au reported in the 2011 resource estimate that formed part of
    AGG's PEA. 

--  Further potential remains to significantly increase both the oxide and
    sulphide resources along strike and at depth for both Kobada, Zone 1 and
    Foroko North deposits and elsewhere on the 215 sq km concession where
    airborne geophysical and geochemical anomalies coincide with extensive
    areas of gold diggings.



Please 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 the Company's website at
www.africangoldgroup.com and on www.sedar.com and through the Company's offices
at Sun Life Financial Tower, Suite 2518, 150 King St. West, Toronto, Canada, M5H
1J9.


On Behalf of the Board:

Michael A. J. Nikiforuk, President, Director

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 FURTHER INFORMATION PLEASE CONTACT: 
African Gold Group, Inc.
Michael A. J. Nikiforuk
(647) 288-0453
majn@africangoldgroup.com
www.africangoldgroup.com

African Gold (TSXV:AGG)
Historical Stock Chart
Von Mai 2024 bis Jun 2024 Click Here for more African Gold Charts.
African Gold (TSXV:AGG)
Historical Stock Chart
Von Jun 2023 bis Jun 2024 Click Here for more African Gold Charts.