Dia Bras Exploration Inc.

Dia Bras Exploration Inc.

January 25, 2010 10:30 ET

Dia Bras Reports High Grade Gold at Surface on Its La Cascada Prospect of the Bolivar Property

MONTREAL, QUEBEC--(Marketwire - Jan. 25, 2010) - Dia Bras Exploration Inc. (TSX VENTURE:DIB) is pleased to report that it has received high grade gold assays from surface channel samples collected in its initial exploration program on the La Cascada prospect of its Bolivar property. La Cascada lies only 2.5 km south of Cieneguita, where Dia Bras has its camp, offices and maintenance facilities for its Bolivar mine operations.

Commenting on the results, Daniel Tellechea, President of Dia Bras, stated, "We are encouraged by the high grade results discovered at surface outcrops that are as high as 15 grams per tonne over a 3 metre channel. This prospect is near our existing infrastructure and lies within the prolific Sierra Madre gold-silver belt of northwestern Mexico that hosts several multi-million ounce gold deposits."

Bolivar has never been explored for gold by modern methods, yet the property is surrounded by several historical gold producing mines and currently well known deposits, such as Goldcorp's El Sauzal mine (1.2 million ounces of gold produced), located 12 km southeast of the prospect and Coeur's Palmarejo deposit (1.1 million ounces of gold plus 88 million ounces of silver), located 50 km to the northwest (see attached Regional Map (http://www.diabras.com/en/newscenter/2010/Cascada%20Regional%20Location.pdf)).


The La Cascada prospect is underlain by an extensive and thick sequence of pyroclastic breccias and agglomerates, including lapilli tuff, landslide mega-breccias, and tuff breccias mixed with andesitic flows, all derived from andesitic volcanism. The basal andesitic flow contains volcanic blocks and bombs, lapilli and ash tuff.

Detailed geologic mapping and sampling are in progress with the objective of identifying drill sites.


From the La Cascada central zone towards the north - northeast, gold anomalies occur along contact zones of discordant veins and veinlets of limonite, sponge limonite and hematite with pervasive quartz and fine-medium pyrite (see attached La Cascada Prospect Au Values (http://www.diabras.com/en/newscenter/2010/Cascada%20Prospect%20-%20Au%20values.pdf) and Anomalies maps (http://www.diabras.com/en/newscenter/2010/Cascada%20Prospect%20-%20Anomalies.pdf)). In addition, a stratiform zone is hosted by intensely argillized, pyroclastic breccia and infill tuff breccia bounded by interlayered andesitic flows.

From the central zone towards the southwest is a topographically higher area where zones of veining with disseminated sulphides (galena, sphalerite, chalcopyrite) occur.

Extensive argillic alteration (kaolinite - quartz - hematite - limonite) occurs over a 100 hectare area with pervasive quartz, fine-medium pyrite and partial silicification of the matrix.

To date, two possible gold-related assemblages have been identified:

1. Quartz - Pyrite - Sericite - Alunite? - Dickite?: Mainly in altered pyroclastic breccia zones and infill breccia tuffs forming a stratabound altered unit cut by anastomosed veins/veinlets with sponge limonite, limonite, hematite and quartz.

2. Sponge Limonite - Jarosite - Hematite - Goethite: Mainly forming halos in fractures or fillings forming veins and veinlets crossing altered host rocks.

This is the first systematic channel sampling on the prospect that covers an area of 2,000 by 3,000 metres. Table 1 below shows selected results from sampling at La Cascada. Complete results are given in the accompanying maps that show sample locations and alteration patterns.

Table 1. Channel Samples Collected At La Cascada Prospect

Quartz veining and
Cascada 229205 1.1 breccias, jarosite, pyrite,

Andesitic breccia,
Cascada 229213 3.2 limonite, quartz and
pervasive pyrite

Andesitic breccia with
Cascada 229214 1.4 limonite in boxworks

Limonitic breccia (jarositic),
Cascada 229221 2.0 fine pyrite, some malachite

Quartz breccia, galena,
Cascada 229223 2.0 sphalerite, pervasive pyrite

Quartz breccia, veinlets
Cascada 229228 0.8 with pyrite, galena,

Semi-massive galena in
Cascada 229283 2.0 andesitic breccia

Quartz breccia with
Cascada 229284 2.0 quartz, pyrite, galena

Quartz vein fine-grained
Cascada 229351 7.0 stockwork and hematized

Quartz veining, weakly
Cascada 229359 2.5 argillized, disseminated
pyrite, quartz

Quartz veining, weakly
Cascada 229360 3.2 argillized, disseminated
pyrite, quartz

Argillic alteration in
Cascada 229361 2.0 porphyritic andesite, fine
pyrite, quartz

Argillic alteration in
Cascada 229362 2.0 andesite, quartz-sericite,

Argillic alteration in
Cascada 229363 2.5 andesite, quartz-sericite,

Lens composed of
Cascada 229369 1.3 limonite and hematite in

Cascada 229370 1.7 Lens composed of
hematite - limonite

PROSPECT SAMPLE Au ppm Ag ppm Cu ppm Pb ppm Zn ppm
Cascada 229205 15.8 1250.0 1770 6330 8280

Cascada 229213 5.24 365.0 1180 4420 192

Cascada 229214 3.73 29.5 333 682 47

Cascada 229221 0.55 223.0 5790 18600 5990

Cascada 229223 6.61 119.0 7560 116500 196500

Cascada 229228 0.64 123.0 1005 16300 9020

Cascada 229283 1.57 80.9 4040 105500 73200

Cascada 229284 1.70 11.4 4430 7330 12000

Cascada 229351 0.70 10.6 320 1290 3730

Cascada 229359 0.16 193.0 344 632 310

Cascada 229360 0.06 243.0 109 542 712

Cascada 229361 0.00 1.0 28 270 164

Cascada 229362 0.00 0.8 48 17 298

Cascada 229363 0.01 0.5 30 258 339

Cascada 229369 0.55 25.8 149 1320 1315

Cascada 229370 0.62 25.1 144 1300 1225

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 done 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 43-101 reports of December, 2006, for 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 NI43-101.

About Dia Bras

Dia Bras is a Canadian exploration mining corporation focused on precious and base metals in the State of Chihuahua and other areas of northern Mexico. The Corporation is committed to developing and adding value to its most advanced assets - the Bolivar copper-zinc project and the Cusi silver mining camp. The Corporation trades on the TSX Venture Exchange under the symbol "DIB".

Forward-looking Statements:

Dia Bras has taken all reasonable care in producing and publishing information contained in this news release. Material in this news release may still contain technical inaccuracies, omissions or typographical errors, for which the Corporation assumes no responsibility. This news release may include certain "forward-looking statements" including but not limited to comments regarding predictions and projections. All statements, other than statements of historical fact, included in this news release, including, without limitation, statements regarding potential mineralization, exploration results, and future plans and objectives of the Corporation, 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 the Corporation's expectations are disclosed in documents filed from time to time with the regulatory authorities.

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.

Contact Information

  • Dia Bras Exploration Inc.
    Daniel Tellechea
    President & CEO
    514-393-8875 ext. 241
    Dia Bras Exploration Inc.
    Karl J. Boltz
    Vice President, Corporate Development