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Dia Bras Exploration Inc. (TSX-V:DIB - News) ("Dia Bras" or the "Company") is pleased to
report that drilling continues at its La Cascada target,
which is a high-sulphidation gold system at its
wholly owned Bolivar Property in southwestern Chihuahua State, Mexico.
Drilling is targeted on near-surface, coincident strong chargeability (IP)
and resistivity zones detected during Titan 24 survey contracted to Quantec Geoscience of Toronto,
Ontario, which was conducted during August 2010. Only three survey lines
could be completed in this area of rugged terrain: a 1,000-m-long N-S line
and two E-W lines (800 and 900 m), which resulted in detection of three
significant anomalies - all of which are associated with anomalous grades of
gold in outcrop (see press release of August 25, 2010). La Cascada is the eastern-most area of a gold anomalous zone
that trends NE-SW through La Sidra to Reyna de Oro http://www.diabras.com/files/media/b6973_Chihuahua%20Regional%20Projects%20and%20Mines%20on%2028%20Dec%202010.pdf
and beyond, a distance of over 8 km. An extensive drilling program is planned
for this trend, and the five holes completed to date are a small part of the
planned number of holes, which, over the next 12 months, will total at least
30 holes and approximately 15,000 m.
"Our initial drilling at La Cascada illustrates the large size of the alteration
system," stated Daniel Tellechea, President
& CEO of Dia Bras. "Drilling of the
southern-most IP anomaly on Cascada ridge revealed
an extensive area of argillic and silicic alteration intimately associated with large
amounts of pyrite and other sulfide minerals. We have only drilled one of the
three strong geophysical anomalies that were detected along the 1,000 m line
on Cascada ridge, by drilling five deep holes. Gold
and copper contents are very anomalous, and we are encouraged by the results.
More areas to the west remain to be drilled, especially the La Sidra zone
that lies 1500 metres west of Cascada
ridge."
The first drill target was the
southern-most geophysical anomaly http://www.diabras.com/files/media/89186_La%20Cascada%20Exploration%20Model.pdf,
which required constructing a drill access road 2.2 km long on the top of Cascada ridge because of its very steep sides and limited
locations for drill sites. The geophysical survey covered less than 10% of
the La Cascada-La Sidra area
http://www.diabras.com/files/media/dfd56_La%20Cascada%20LA%20Sidra%20Interpretive%20cross%20section%2030%20Dec%202010.JPG
which is known to host strong gold anomalies, with samples assaying up to 15
g/t gold in the La Sidra area. Five holes totaling 2,555.1 metres were drilled at the first site, and all
encountered extensive argillization, silicification and pyritization
of the host andesite and quartz-eye granodioritic dikes to the limits of the holes, which
ranged up to 600 m in length.
Complete assay results have been
received for the first three holes, DCA10B001-003 http://www.diabras.com/files/media/96ae8_La%20Cascada%20Updated_Samples_Database%20Validated.pdf,
while partial results are available for DCA10B004
http://www.diabras.com/files/media/fab86_La%20Cascada%20Updated_Samples_Database%20Pending.pdf.
Results are pending for DCA10B005 and hole 6 is in progress on the central
geophysical anomaly.
The assay results indicate that the
southern anomaly is very anomalous in gold, silver and base metals with gold
grades in holes 1-3 ranging up to 2.79 g/t, silver to 128 g/t, copper to
1.57%, lead to 0.95%, zinc to 1.70% and arsenic to 2,050 ppm.
Drill hole DCA10B004 has results ranging up to 4.49 g/t gold, silver to 45.5
g/t, copper to 0.99%, lead to 0.08% and zinc to 1.98%; results for arsenic
are pending. These are not typical results but illustrate the anomalous
nature of the area drilled. These data indicate that the Cascada
ridge may be too close to the intrusive system and drilling will continue to
test this large altered area, especially to the southwest in the La Sidra
area where the company is constructing a 3.5 km long access road in
preparation of drilling in the first quarter of 2011.
The numerous granodioritic
dikes encountered in the holes indicate the presence of an intrusion at
depth, which is encouraging for the presence of high-sulphidation
gold deposits in the Cascada area.
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. La
Cascada is near the Company's existing
infrastructure, only 2 km south of its Cieneguita
camp, and lies within the prolific Sierra Madre Occidental gold-silver belt
of northwestern Mexico that hosts several multi-million ounce gold deposits.
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)
and is 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.
Contact:
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
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