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Dia
Bras Exploration Inc. (TSX-V:DIB
- News) ("Dia Bras") (the "Company") is pleased to
report that it has received assay results from diamond drill holes of its
current drilling program at its Las Coloradas
project in the Melchor Ocampo
mineral district, Zacatecas State. Drill hole #5 (DLC10B005) intercepted
129.6 m of skarnified limestone, which averages
72.6 g/t (2.3 ounces) silver, 1.38% lead, 1.62% zinc and 0.10% copper.
"These
results are a significant follow-up to the results of our first hole on the
project," stated Daniel Tellechea, President
& CEO. "The five holes we have completed, as well as the sixth in
progress, are giving us the geologic controls we need to focus our drilling
on the best mineralized portions of the deposit."
The
Las Coloradas project is located in (http://www.diabras.com/files/media/58564_Melchor%20Ocampo%20District.pdf)
the Melchor Ocampo
mineral district that is known for the occurrence of large carbonate
replacement deposits of precious and base metals. Las Coloradas
is approximately 20 kilometres due north of
Goldcorp's Penasquito mine, as well as near
important mines/projects in Zacatecas such as Aranzazu
(Aura Minerals), Tayahua (Frisco) and Camino Rojo (Goldcorp). Carbonate Replacement Deposits (CRDs)
are Ag-Pb-Zn-(Cu-Au) deposits and have contributed
approximately 40% of Mexico's historic silver production, making them second
only to epithermal veins. Currently, they provide most of the zinc and lead
production that put Mexico in 5th and 6th place in worldwide production. CRDs
form large deposits, ranging from 25 to 100 million tonnes
of ore.
The
Company's geologists believe that hole #2 undercut the mineralized zone
intercepted in hole #1 (see news release of October 26, 2010). Holes 3 &
4 were located 200 m and 175 m (respectively) west of holes 1 & 2 and
encountered lower grade mineralization. Holes 5 & 6 (http://www.diabras.com/files/media/da35b_Cross%20Section%20Geologic%20&%20Holes.pdf
see cross section) are located 50 m west of holes 1 & 2. Drill hole #6 is
completed (assays pending), and the rig is drilling hole #7, which is 70 m
west of 5 & 6 (http://www.diabras.com/files/media/bc5ae_NR%20No%203%20Melchor%20Ocampo%20Drill%20hole%20location%20map%20cross%20section.JPG
see drill hole location map). More drill holes are required to determine the
true widths of the intercepts but the Company's geologists estimate the true
widths to be 80-90% of the core lengths.
Table
1 below shows the assay results from holes 2-5 at Las Coloradas.
Table
1: Assay Results from Dia Bras drill holes
DLC10B002 through DLC10B005
--------------------------------------------------------------------------
Core
Length Silver
Hole # From
(m) To (m) (m) (g/t) Lead % Zinc % Copper %
--------------------------------------------------------------------------
DLC10B002 370.15 385.50 15.35 21.8 0.28 0.39 0.05
--------------------------------------------------------------------------
477.50 503.00 25.50 11.9 0.12 0.22 0.02
--------------------------------------------------------------------------
512.00 528.22 16.22 25.0 0.22 0.58 0.04
--------------------------------------------------------------------------
DLC10B003 305.45 318.79 13.34 3.1 0.13 0.22 0.01
--------------------------------------------------------------------------
331.97 335.14 3.17 15.7 1.59 0.22 0.06
--------------------------------------------------------------------------
DLC10B004
3.09
7.59
4.50
36.5
0.26
1.38
0.02
--------------------------------------------------------------------------
105.20 122.00 16.8 30.8 0.37 0.16 0.02
--------------------------------------------------------------------------
DLC10B005
152.4
282.0
129.6
72.6
1.38
1.62
0.10
--------------------------------------------------------------------------
Incl.
156.3 276.85 120.55 76.2 1.47 1.72 0.11
--------------------------------------------------------------------------
Incl.
158.15 172.15 14.0 99.1 2.30 2.89 0.20
--------------------------------------------------------------------------
and
197.5
202.3
4.8 182.2 3.62 5.17 0.36
--------------------------------------------------------------------------
All
holes were collared in sandstone and shale east of a wide (approx. 100 m),
near-vertical, E-W trending fault zone and crossed into the Taraises Formation (thin-bedded limestone and mudstone)
and then entered the La Caja Formation (siltstone
and thick-bedded limestone) that was converted to skarn
by intrusions of granodiorite. The lower portion of
the Taraises Formation is also skarnified.
Underlying the skarnified La Caja
Formation is the Zuloaga Formation (massive
limestone), which is generally un-mineralized.
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). Dia Bras is also 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".
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:
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
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