Dia Bras Exploration Inc.
TSX VENTURE : DIB

Dia Bras Exploration Inc.

April 06, 2010 10:30 ET

Dia Bras Reports More High-Grade Gold Samples at the La Cascada High-Sulfidation Gold Prospect at the Bolivar Property

MONTRÉAL, QUÉBEC--(Marketwire - April 6, 2010) - Dia Bras Exploration Inc. (TSX VENTURE:DIB) is pleased to report more assay results from the La Cascada high-sulfidation gold prospect of its Bolivar property in Chihuahua State, Mexico. La Cascada is located only 2.5 km south of Dia Bras' support and maintenance facilities at its Cieneguita camp. 

"These results reinforce our earlier data that show La Cascada is a significant gold prospect," stated Daniel Tellechea, President and CEO. "These latest sample assays demonstrate that the silicified and brecciated bedrock consistently returns potentially-economic grades of gold, with values in outcrop up to 7 g/t gold. We have high grades of gold in outcrop over a distance of 2,500 metres, an indication of the breadth and strength of this mineralized area. Even though results from another 35 samples from La Sidra are yet to be received, we are convinced that this area is an important prospect, and we are proceeding with a geophysical survey that will assist in defining drill targets."

Table 1 below shows selected results from samples collected from the more altered rocks at La Cascada. Complete results are given in the accompanying map (http://www.diabras.com/en/newscenter/2010/Cascada_Update.pdf) that shows sample locations and alteration patterns, and a complete list of the results from the newly-received 70 samples is in the accompanying table (http://www.diabras.com/en/newscenter/2010/La_Cascada_samples.xls).

Table 1: Selected Samples from La Cascada Prospect, Bolivar Property

SAMPLE WIDTH TYPE Au
g/T
Ag
g/T
As
ppm
Ba
ppm
Cu
ppm
Pb
ppm
Sb
ppm
Zn
ppm
710063 1 Chip Rock 0.6 0.4 13 1,040 17 829 2 105
710070 1 Chip Rock 1.8 19.5 74 260 840 2,170 2 325
710071 3 Chip Rock 2.5 26.2 9 30 54 31 2 259
710077 1.1 Channel 0.8 196 156 90 2,970 38,400 2 828
710079 1.4 Channel 0.6 225 69 650 5,590 25,000 2 6,740
710081 1 Chip Rock 0.9 227 134 1,020 3,800 9,410 2 1,050
710082 2.1 Chip Rock 0.4 44.4 37 1,420 111 969 2 1,630
710083 3 Chip Rock 0.6 43.2 54 890 84 1,035 2 960
710093 1 Chip Rock 0.4 6.4 93 10 55 127 6 114
710213 3 Chip Rock 5.3 73.7 30 10 6,520 79,600 60 111,500
710214 3 Chip Rock 7.2 104 10 40 5,280 88,800 108 95,900
710215 7 Chip Rock 3.6 45.7 11 80 1,375 34,300 43 46,200
710220 5 Chip Rock 2.9 252 62 20 1,580 3,060 30 713
710224 1 Chip Rock 1.2 12.6 261 10 191 545 2 70
710225 2 Chip Rock 4.0 63.6 249 50 275 1,015 37 86

The zone of high-sulfidation gold mineralization is characterized by an extensive zone of strong, advanced argillic alteration of the host andesite extending at least 6 km2 that contains areas of silicification, and the zone is open in several directions. The silicified zones are structurally controlled and occur as concentric zones of silicification expressed by an outer zone of granular silica replacement of andesite, an intermediate zone where silicification has destroyed feldspars and original textures, and a core zone of vuggy silica where all original features of the host rock have been destroyed. An interpretive section is available at the following link: http://www.diabras.com/en/newscenter/2010/sidra_section.pdf. La Cascada is located only 5.5 km to the NE of EXMIN´s Reyna de Oro gold prospect and appears to be related to the Reyna de Oro in a long system with multiple zones of gold mineralization along the trend.

The La Cascada mineralization has characteristics similar to several multi-million ounce high-sulfidation gold deposits, such as the gold association with structurally controlled vuggy silica zones, the style of alteration zonation, association with copper and arsenic, presence of pyrophyllite, etc. La Cascada is notably similar to the El Sauzal deposit, which is located less than 20 km to the southeast and is on the same regional, NNW-trending major structural zone.

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. Samples sent for analysis were 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) program employed by 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 corporation focused on precious and base metals in Chihuahua State 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's shares trade on the TSX Venture Exchange under the symbol "DIB". 

For further information on Dia Bras Exploration Inc. visit www.diabras.com

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.

Contact Information

  • Dia Bras Exploration Inc.
    Daniel Tellechea
    President & CEO
    514-393-8875 ext. 241
    or
    Dia Bras Exploration Inc.
    Karl J. Boltz
    Vice President, Corporate Development
    1-866-493-9646