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Dia Bras Reports Drilling and Sampling Results at Its La India Area, Cusi Property, Chihuahua, Mexico

 

TSX Venture Exchange - DIB

TORONTO, March 13, 2012 /PRNewswire/ - Dia Bras Exploration Inc. (TSXV: DIB) (BVLAC: DIB) ("Dia Bras") (the "Company") is pleased to announce results of drilling and sampling of veins at its La India project in the Cusi property, Chihuahua, Mexico.  Drilling has been conducted on the Durana and Saturno veins (see Figure 1: Map of the La India Area) and the San Jose vein has been sampled along its strike length where the vein is exposed in old pits and stopes.

The La India area contains many high-grade silver veins of considerable strike length that were intensively mined by historical workers in areas where the veins are structurally complex (see Figure 1: Map of the La India Area).  These complexities are the result of flexures of the veins, splays off the main veins, and vein intersections.  Dia Bras first conducted drilling programs in this area in 2006.  The potential of this area is indicated by the impressive intersection in drill hole DC06B012 that yielded 35,442 g/t Ag over 0.4 m within a 7.0 m section that assayed 2,257 g/t Ag (see press release of October 3, 2006).

An area of similar structural complexity occurs in the vicinity of La Abundancia and San Jose shafts where 20 de Noviembre, La Candelaria and San Jose veins intersect and exhibit flexures.  In addition, the Saturno and Durana veins extend to the 20th de Noviembre vein, which creates additional complexity.  Sampling by Dia Bras geologists (see below) of the San Jose vein yielded high grades of silver in highly-oxidized outcrops, old prospect pits and shallow open stopes.

The historic miners concentrated on veins containing very high grades of silver (>1,000 g/t) due to the mining methods and operating costs of the time (pre-20th Century) in what was then a remote area.  Their results from pitting and stoping on the San Jose vein apparently discouraged any further work because no mining was done from it.

The grades of silver returned from Dia Bras' sampling indicate the veins contain potentially-economic grades of silver for a modern operation, especially in the un-oxidized portions at depth.

Dia Bras intends to continue work in the La India area to develop and mine these silver-rich veins as part of the Company's strategy of becoming a significant producer of silver.

The following table shows assay results from drill samples at the La India area:

Hole
ID
From-To
(m)
Interval
(m)
Est. True
Width (m)
Ag
(g/t)
Pb
(%)
Zn
(%)
Mn
(%)
Vein
423* 181.1-181.7 0.6 0.41 236 0.32 0.17 0.14 20 de Nov.
431** 49.9-50.7 0.8 0.70 108 0.01 0.01 0.57 Durana(?)
and 65.35-67.00 1.65 1.49 1,020 0.09 0.04 0.23 Saturno
434** 60.55-61.45 0.9 0.59 198 0.03 0.01 0.23 Durana
and 62.65-63.10 0.45 0.30 767 0.12 0.03 0.02 Durana
and 75.0-76.5 1.5 1.08 226 0.03 0.01 0.13 Saturno(?)
and 81.0-84.0 3.0 2.15 194 0.00 0.01 0.21 Saturno
438** 48.75-49.65 0.90 0.74 102 0.02 0.03 0.28 Durana
and 57.7-60.1 2.4 2.07 89 0.01 0.09 0.81 Saturno

* prefix DC11B
** prefix DC12B

The San Jose vein (see Figure 2: Sample Location Map of the San Jose Vein) is within an area identified by the Company's geologists as being a very favorable exploration area, based on the multiple vein intersections there.  The San Jose vein was sampled by historic workers who dug shallow pits, shallow open stopes and a shallow shaft.  The vein is strongly oxidized in these workings.  Silver grades were apparently too low to attract development at that time but sampling of the old pits and dump material at the San Jose shaft by Dia Bras demonstrates that the grades are potentially economic with modern mining methods, as indicated in the tables below.

The following table shows assay results from samples collected from the highly-oxidized dump at the San Jose shaft.  Nineteen samples were collected that average 113.6 g/t silver.

Sample # Locality Ag g/t Pb % Zn % Mn %
558501 San Jose shaft dump 487.5 0.20 0.21 0.91
558502 " 95.7 0.01 0.03 0.46
558503 " 54.0 0.01 0.29 0.49
558504 " 267.7 0.26 0.27 0.98
558505 " 24.9 0.04 0.16 0.81
558506 " 207.1 0.07 0.26 0.97
558507 " 16.5 0.03 0.05 0.75
558508 " 138.4 0.01 0.31 0.90
558509 " 54.5 0.04 0.26 0.93
558510 " <10 0.04 0.07 0.50
558511 " 101.9 0.06 0.32 1.01
558512 " 28.9 0.04 0.28 0.34
558513 " 22.6 0.05 0.23 0.71
558514 " 268.7 0.04 0.39 1.12
558515 " <10 0.02 0.05 0.24
558516 " 13.1 0.04 0.01 0.27
558517 " 236.4 0.07 0.16 1.01
558518 " 125.6 0.01 0.18 0.99
558519 " 14.1 0.02 0.04 0.62

The following table shows assay results from samples collected from very oxidized outcrops of the San Jose vein along its length.  Sample locations are shown on the San Jose map.

Sample # Locality Ag g/t Pb % Zn % Mn %
558520 San Jose Vein outcrops 299.6 0.29 0.36 1.03
558521 " <10 0.04 0.29 0.86
558522 " 34 0.03 0.34 11.50
558523 " 122.3 0.07 0.22 14.50
558524 " <10 0.05 0.07 0.94
558525 " 47.3 0.03 0.06 0.97
558526 " 493.6 0.01 0.15 9.30

The following table shows assay results from samples collected from very oxidized shallow pits and open stopes of the San Jose vein along its length.  Sample locations are shown on the San Jose map.

Sample # Locality Ag g/t Pb % Zn % Mn %
558527 Rebaje 3 109.0 0.02 0.05 1.08
558528 Rejabe 1 288.0 0.04 0.09 0.73
558529 Rebaje 2 <10 0.02 0.04 0.04
558530 " 11.7 0.04 0.03 0.11
558531 " 14.7 0.03 0.06 0.70
558532 " 275.0 0.05 0.19 4.30
558533 " 273.0 0.05 0.25 2.89

The Company intends to continue drilling and underground sampling in the La India area with the objective of developing the area for another mining area. The La India area will become a third area of mining in the Cusi property, together with the Santa Eduwiges and Promontorio areas.

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 analyzed by Induction Coupled Plasma (ICP) at ALS Chemex.

Quality Assurance
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 Qualified Person as defined in NI 43-101 and Head of Exploration for Dia Bras Exploration, Inc.

About Dia Bras
Dia Bras Exploration is a Canadian exploration & mining company focused on precious and base metals in Chihuahua State, other areas of northern Mexico, and most recently at its Yauricocha silver-lead-zinc-copper-gold mine in Peru. The Company is accelerating exploration at the Yauricocha property as well as pursuing the development and exploration of its most advanced Mexican assets - the Bolivar Property (copper-zinc-silver) and the Cusi Property (silver-lead) and is exploring in Mexico several precious metal targets such as La Sidra gold project at the Bolivar Property, Las Coloradas silver project at Melchor Ocampo (Zacatecas State), the Bacerac silver project (Sonora State), and the La Verde gold project at the Batopilas Property (Chihuahua State).  Dia Bras is also exploring base metal projects in Mexico such as the Corralitos intrusion-hosted molybdenum deposit (Chihuahua State).

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.

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 that 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.

 

 

 

SOURCE Dia Bras Exploration Inc.

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