Dia Bras Announces More High-Grade Silver Drill Intercepts from its Cusi Project
Thu Apr 10, 7:30 AM
ca.news.finance.yahoo.com
MONTREAL, QUEBEC--(Marketwire - April 10, 2008) - Dia Bras Exploration Inc. (TSX VENTURE: DIB.V) is pleased to report on its on-going drilling program at the Cusi silver property.
To view the Table of Assays and Assays Pending, please visit the following link: media3.marketwire.com
Since the beginning of 2008, 6,476.5 metres of core diamond drilling have been done, which is the first portion of a planned 20,000-metre program.
The results of surface and underground mapping and sampling as well as surface drilling have provided data for the Company's first NI43-101 compliant resource calculation on this property, which is expected to be completed by mid-April 2008.
PROMONTORIO SECTOR
The silver-rich Promontorio sector continues to deliver high-grade silver intersections over potentially economic widths and they are particularly encouraging. The best results from the last batch of drill assays sent at the end of 2007 and beginning of 2008 to Chemex include results from hole DC07B157 that intersected 9.0 metres of 148 g/t Ag (3.8 metres true width), DC07B160 which intersected 4.0 metres of 181 g/t Ag (0.7 metre true width), hole DC08B161, which intersected 680 g/t Ag over 1.8 metre (1.2 metre true width), DC08B166 which intersected 540 g/t Ag over 3.0 metres (2.1 metres true width), and DC08168 which intersected 3.0 metres of 234 g/t Ag (2.1 metres true width).
High-grade silver values were also encountered in the El Gallo vein of the Promontorio system, where drill hole DC08B170 intersected 4.5 metres of 443 g/t Ag (3.9 metres true width).
Some of the drill holes in the Promontorio area must be drilled down-dip on the major "A" vein (Veta A) of the Promontorio Mine, due to restrictions on locations of drill sites, and thus, true widths often represent less than 40% of the length of the core interval.
Mineralization at Promontorio is associated with fracture-filled veins with high precious-metal grades, typical of a high level epithermal system. The most prominent vein in the sector is Veta A, and Dia Bras has reported high historical grades as well as the Company's drill core data from this vein and from its intersections with intersecting subsidiary veins (see press releases dated May and September 13, 2008).
SANTA EDWIGES - SAN ANTONIO - SAN MARINA SECTOR
In this area, silver mineralization has given way to zinc and lead mineralization, which represents a deeper part of the zoned vein system, with intersections of up to 1.7 metre of 0.2 g/t Au, 49 g/t Ag, 2.3% Pb and 4.8% Zn over 1.7 metre core length (1.6 metre true width) in hole DC07B162, or 6.0 metres (5.6 metres true width) of 0.3 g/t Au, 54 g/t Ag, 3.7% Pb and 4.0% Zn in hole DC08B165.
The Santa Edwiges - San Antonio - San Marina sector consists of multiple fracture-filled quartz-carbonate veins containing high sulphide contents that are typical of the middle portion (Pb-Zn) of a zoned, low-sulphidation epithermal vein. This middle portion of the vein transitions upwards to the precious metal (Au, Ag) portion of the vein.
2008 Drill Program
The following table shows the distribution of drilling for 2008.
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Metres per zone
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Zone January February March Total
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Santa Edwiges 422 792 795
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Underground 422 792 795 2009
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Promontorio 920 789 126 1835
Santa Edwiges 601 394 0 995
Santa Marina 176.5 520.5 37.5 1073.5
Minerva 0 40 524 564
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Total Surface 1697.5 1743.5 1026.5 4467.5
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Grand total 2119.5 2535.5 1821.5 6476.5
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Method of analysis
Half split diamond drill core samples sent for analysis were prepared by ALS Chemex sample preparation laboratory in Chihuahua, Mexico, and assayed for Ag by AA on 50 g split sample at the ALS Chemex Vancouver Laboratory. Assays for Pb, Zn and Cu are done by Induction Coupled Plasma (ICP) at ALS Chemex, Vancouver.
Quality control
The quality assurance-quality control (QA-QC) of Dia Bras has been described in detail in Roscoe Postle Associates' 43-101 report of December 2006 on Cusi.
The technical content of this news release has been approved by Francois Auclair, P. Geo. and Vice-President, Exploration of Dia Bras, a Qualified Person as defined in NI43-101.
About Dia Bras
Dia Bras is a Canadian exploration mining Company focused on precious and base metals in the State of Chihuahua, in northern Mexico. The Company is committed to developing and adding value to its assets - the Bolivar copper-zinc project and the Cusi silver mining camp. The Company trades 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.
The TSX Venture Exchange does not accept responsibility for the adequacy or accuracy of this press release.
Contacts
Daniel Tellechea
Dia Bras Exploration
President & CEO
514-393-8875 ext. 241
Francois Auclair
Dia Bras Exploration
Vice-President, Exploration
514-393-8875 ext. 243
www.diabras.com |
