Wed Aug 24, 2011 Barker Reports Positive Gold Results on its Black Bear Silver/Gold/Lead Project
For Immediate Release
Barker Reports Positive Gold Results on its Black Bear Silver/Gold/Lead Project
Prince George, B.C., August 24, 2011 -- Barker Minerals Ltd. ("BML" on TSX/V) (the "Company") reports it has received results from the gold analysis on samples from the previously announced 2010 two thousand metre trenching program on its silver/gold/lead Black Bear project. (see BM-10--163; BM-10-168; BM-11-176 and BM-11-179. Gold values in bedrock grab samples up to 2.1 grams per ton (g/t) were reported on the Hunt vein and up to 7.5 g/t gold on the Providence target. The 100% owned project on China Mountain is located 74 km northeast of Williams Lake, in the Cariboo region of British Columbia. The project has excellent access and infrastructure nearby. (Black Bear Location map)
On the Black Bear project, significant levels of tellurium and bismuth are consistently associated with high grade mineralization. Tellurium is reported as high as 700 parts per million (ppm) and bismuth up to 11,000 ppm, or 1.1%. It is known that high levels of tellurium can negatively affect the accuracy of fire assays for gold as some gold can be lost through the "cupellation phase," resulting in the under reporting of the gold contents.
Tellurium is not a common mineral and is typically thought not to occur in high enough concentrations in nature to affect the accuracy of gold analysis using the regular fire assay method. Thus historically, very little attention has been paid by the exploration industry to the presence of tellurium, let alone the interference possible in the analytical process.
Due to the very high levels of tellurium at Black Bear, Barker initiated a comparative gold analysis on twelve samples from the 2010 Black Bear trenching program which includes 4 separate acceptable industry gold analysis methods. The methods considered were regular fire assay, a roasting, or ashing fire assay technique which attempts to roast off the tellurium before the regular fire assay is completed, Neutron Activation Analysis (NNA) which is unaffected by the presence of Tellurium and the ICP-MS technique.
The lab reported that the ICP-MS procedure is used for precise identification of low levels of minerals and elements. It was determined that the extremely highly mineralized nature of the Black Bear samples would contaminate their system and as a result the ICP-MS analysis was not undertaken. The other 3 analytical method results are presented in the chart below for comparison purposes.
2010 Black Bear Silver/Gold Project Gold Analysis Comparison Study
Gold Analysis Comparison Chart Legend
Fire Assay in parts per billion (ppb) - 1000 ppb = 1 part per million (1 ppm) = 1 gram per ton (1 g/t)
Fire Assay (Ashing) in parts per billion (ppb) - 1000 ppb = 1 part per million (1 ppm) = 1 gram per ton (1 g/t)
Neutron Activation Analysis (NAA) - ug/g (Micrograms) 1 ug/g = 1 ppm = 1 gram per ton
The study demonstrates that there can be significant variances in gold concentrations detected using the different analytical methods. Samples H11, H14, PRO8 and PR13 show significant increases from the regular fire assay method to the NAA method. PR08 had 3.8 g/t gold in the regular fire assay and 7.5 g/t gold reported from the NAA method, while sample PR13 had 2.1 g/t gold from the fire assay method and 5.5 g/t gold using the NAA technique.
Samples H11 and H14, from the Hunt prospect vein, had .84 g/t and .15 g/t gold respectively in the regular fire assay process while increased gold values of 1.8 g/t and 1.7 g/t gold respectively were detected from the NAA method. Sample H-14 had more than a ten fold increase in gold concentrations detected when comparing the regular fire assay method to the NAA method.
The recognition of higher gold values associated in the vicinity of the large Hunt quartz vein is an important finding as the Hunt and Providence targets are approximately 2 km's apart. This creates a large favorable initial footprint target area which enhances the potential for discovery of high grade precious metal mineralization on the property.
Sample results for H11, H14, PR08 and PR13 demonstrate a progressive increase in gold concentrations detected from the regular fire assay process, to the roasting fire assay method and to the Neutron Activation method where the highest gold values were detected. This sequence of samples indicates that the roasting fire assay method removes some tellurium but is not totally successful in removing all the tellurium from the samples.
Samples PR7, PR10 and LCO2 had similar concentrations of gold detected from all 3 methods.
The above results dictate that the presence of tellurium should routinely be analyzed for, and that any samples or project areas with tellurium identified will require care and diligence in determining the accurate concentrations of gold. This will be increasingly important when considering economic potential in project areas which may be more "gold only" related such as the Ace Gold project, where past exploration programs identified important gold bearing telluride minerals through lab analysis, and petrographic studies by independent consultants, as well as the Geological Survey of Canada. (GSC)
The 2010 trenching results confirm widespread high grade potential of silver, gold and lead on the target areas tested which enhances the exploration potential of the entire Black Bear project area. Many similar compelling targets remain unexplored as demonstrated by the GSC airborne survey results (Black Bear GSC Airborne 1st Derivative Magnetics) and past geochemical studies of the immediate area. (Black Bear Compilation Soil Map)
The scientific and technical information contained in this news release was prepared under the supervision of Rein Turna, B.Sc., P.Geo. the Company's "qualified person" under National Instrument 43-101 Standards of Disclosure for Mineral Projects.
About Barker Minerals
Barker Minerals is advancing exploration on its mineral properties in the Cariboo Gold District, one of the most mineralized belts in British Columbia. The Company has more than 20 projects on its exploration properties, all of which are 100% owned by Barker Minerals. Eight projects have drill-ready gold and/or massive sulphide targets.
Certain statements in this press release may be considered forward-looking information, including those relating to "plans" of the Company. Such information involves known and unknown risks, uncertainties and other factors -- including the availability of funds, the results of financing and exploration activities, the interpretation of drilling results and other geological data, project cost overruns or unanticipated costs and expenses and other risks identified by the Company in its public securities filings -- that may cause actual events to differ materially from current expectations. Readers are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date of this press release. The Company disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.
Louis E. Doyle
Barker Minerals Ltd.
Tel: (250) 563-8752
Fax: (250) 563-8751
Robert H. Kuhl
Barker Minerals Ltd.
Tel: (604) 321-0709
Fax: (604) 321-0719
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.
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