Dia Bras Samples High Grades of Silver and Gold on Its Bacerac Property, Sonora State, Mexico
TORONTO, ONTARIO -- (Marketwire) -- 01/21/11 -- Dia Bras Exploration Inc. (TSX VENTURE: DIB) is pleased to report that surface sampling of the San Patricio prospect on its wholly owned Bacerac Property has identified high grades of silver and gold. The sampling program underway resulted from Management's decision late in 2010 to accelerate exploration work on this broad, altered area.
'These are exciting results,' stated Daniel Tellechea, President & CEO. 'The potential for an open-pitable silver-gold-lead mine at San Patricio has increased significantly. We are advancing the project by trenching with an excavator in order to evaluate the zone further. Bacerac is one of the four greenfield precious metal projects that Dia Bras is planning to drill in 2011. These four projects add exploration upside to our more advanced development work on Bolivar and Cusi properties.'
The project area contains Tertiary volcanic rocks consisting of rhyolitic and andesitic flows and breccias that overlie probable Cretaceous sedimentary rocks; both units locally exhibit strong alteration. A large area of alteration and mineralization surrounds the historic San Patricio mine and provides a large exploration target. Mineralization is commonly associated with strongly silicified rhyolitic rocks near the base of the unit at or near the contact with underlying sedimentary rocks. Veins are locally important. There are multiple small mines and prospects in the region.
Infrastructure, only five kilometres from the http://www.diabras.com/files/media/49211_Bacerac%20Regional%20Infrastructure.pdf San Patricio prospect area, includes a major regional highway, towns, a power grid, etc. These factors will have a significant positive effect on future operation costs.
The http://www.diabras.com/files/media/2e71c_San%20Patricio.pdf map of the San Patricio prospect area shows that the mineralized quartz breccia covers an area of approximately 600 x 400 m, within which the recent sampling shows a silver-gold-lead mineralized zone of about 300 x 200 m. The mineralized zone has not been completely closed off and remains open to the northeast.
Sampling crews have collected rock-chip channel samples in a grid pattern around the old San Patricio mine, and a senior geologist has been conducting regional and detailed mapping. Selected results are shown in Table 1 and http://www.diabras.com/files/media/8c86a_NR%20No%202%20Bacerac%20-%20San%20Patricio%20Sample%20Spreadsheet.pdf results for all samples are available on the Company's web page.
Table 1. Selected Rock-chip Channel Samples from San Patricio Prospect
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Sample # Ag g/t Au g/t Cu ppm Pb ppm Zn ppm
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345507 171 0.192 1585 3440 1350
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345529 133 0.116 754 3420 348
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345530 151 0.076 1615 516 306
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345535 147 0.022 201 2360 25
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345537 161 0.393 480 5100 89
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345550 101 1.270 668 7950 77
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345551 103 1.025 305 8980 14
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345553 120 1.105 150 2930 216
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345555 191 1.640 232 11500 39
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345564 215 1.590 144 10600 37
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345565 178 0.896 352 6880 87
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345566 80 1.765 244 5600 85
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345567 102 0.969 137 4120 38
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345569 98 0.712 241 2710 61
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Trenching is in progress with an excavator cutting trenches 400 m long, at a spacing of 100 m, oriented in a NE-SW direction.
The results from surface sampling, trenching and mapping are expected to identify several, high priority drill targets that will be drilled during the second quarter of this year.
Method of Analysis
Samples were prepared at the ALS Chemex lab facility in Chihuahua, Mexico, and analyzed by ICP and AA methods at their facilities in Vancouver, Canada. Diamond drill samples sent for analysis consisted of half NQ-size and BQ-size diamond core split on site, prepared by the ALS Chemex sample preparation laboratory in Chihuahua, Mexico, and assayed for Au by 50 g fire assay with AA finish, and for Ag by AA on 50 g split sample at the ALS Chemex North Vancouver Laboratory. Assays for Pb, Zn and Cu are processed by Induction Coupled Plasma (ICP) at ALS Chemex.
Quality Control
The quality assurance-quality control (QA-QC) of Dia Bras has been described in detail in both RPA's NI 43-101 reports of December, 2006, at Cusi and October, 2005, for Bolivar.
The technical content of this news release has been approved by Thomas L. Robyn, Ph.D., CPG, RPG, a Director of Dia Bras, a Qualified Person as defined in NI 43-101.
About Dia Bras
Dia Bras is a Canadian exploration mining company focused on precious and base metals in Chihuahua State and other areas of northern Mexico. The Company is pursuing the development and exploration of its most advanced assets - the Bolivar Property (copper-zinc-silver) and the Cusi Property (silver). Dia Bras is also exploring several precious metal targets such as La Cascada project at the Bolivar Property, the Las Coloradas project at Melchor Ocampo (Zacatecas State), the Bacerac Property (Sonora State) and the La Verde project at the Batopilas Property (Chihuahua State).
The Company's shares trade on the TSX Venture Exchange under the symbol 'DIB'.
Forward-looking Statements
Except for statements of historical fact, all statements in this news release without limitation regarding new projects, acquisitions, future plans and objectives are forward-looking statements which involve risks and uncertainties. There can be no assurance that such statements will prove to be accurate; actual results and future events could differ materially from those anticipated in such statements.
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 news release.
Contacts:
Dia Bras Exploration Inc.
Daniel Tellechea
President & CEO
1-866-493-9646
Dia Bras Exploration Inc.
Karl J. Boltz
Vice President, Corporate Development
1-866-493-9646
www.diabras.com