Dia Bras Exploration Inc.
TSX VENTURE : DIB

Dia Bras Exploration Inc.

November 21, 2006 09:24 ET

Dia Bras Reports Recent Results From its Exploration Program at South Bolivar Cu-Fe-Ag-Au Skarn Body

MONTREAL, QUEBEC--(CCNMatthews - Nov. 21, 2006) - Dia Bras Exploration Inc. (TSX VENTURE:DIB)("Dia Bras" and or the "Company") is pleased to announce intersections of 9.0 meters grading 1.34% copper and 15.5 meters grading 1.11% copper in diamond drill hole 177 as part of the latest exploration results from its Bolivar copper-zinc property in Chihuahua State, Mexico. In addition, hole 177 penetrated 4.0 meters grading 16.68% Zn higher in the hole.

Holes DB06B175-177 were drilled as part of the program to provide in-fill drill data directed at calculating an initial resource for the South Bolivar Cu-Fe-Ag-Au skarn body. The drill hole locations are shown on the map attached and detailed assay results are as follows:




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From To Width Cu Zn Fe Ag Au
Meters Meters Meters (%) (%) (%) g/t g/t
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Bolivar South
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DB06B175 287 312 25.0 0.55 0.33 ap 10 ap
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DB06B176 402 406.3 4.3 0.00 1.34 5.54 4 0.00
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418 419 1.0 0.00 0.00 22.30 10 ap
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424 425 1.0 2.66 0.04 ap 44 0.87
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El Gallo
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DB06B177 135 139 4.0 1.74 16.68 6.99 20 0.02
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Incl. 136 138 2.0 1.33 28.20 5.22 16 0.00
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153 162 9.0 1.34 0.08 21.55 26 0.08
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Incl. 156 159 3.0 1.94 0.06 27.20 35 0.02
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203.5 219 15.5 1.20 0.09 20.61 26 0.25
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Incl. 203.5 209 5.5 1.63 0.12 40.09 45 0.36
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ap equals assay pending


The results from these holes continue to demonstrate that significant copper-iron values are present within the South Bolivar skarn body. In addition, the high zinc values found in the upper portion of hole 177 demonstrate that zones of potentially economic zinc mineralization occur within the South Bolivar zone.

The South Bolivar skarn body is exposed on cliffs at El Gallo that show two dimensions of the body, where the skarn is 30 meters thick in both cliff faces. The South Bolivar skarn has been intercepted below the Level 6 workings of the Bolivar pilot mine by the Company's drill holes, and these intercepts demonstrate a strike length in a NW-SE direction of 800 meters. A NE-SW strike length of 300 meters is visible on the SE-facing cliffs of El Gallo before the skarn dips beneath the surface. This zone is now recognized over more than 0.3 km2, which represents 3 million m3 containing an average of 1.5% copper, 25% magnetite, and with silver credit. The zone remains open to the north, east and south.

Skarns of the South Bolivar type are formed by alteration of dolostone (a magnesian-carbonate bed of chemical sedimentary origin), and the sedimentary origin of the original rock indicates that the lateral dimensions of the skarn body should be extensive and may continue down-dip to the Banda fault, a distance of over 1,000 meters. The South Bolivar skarn is within the wide alteration envelope related to a copper porphyry intrusion and is a more proximal skarn, while the Bolivar pilot mine is within the more distal zinc-rich portion of this type of system. Skarns of the South Bolivar type in other copper porphyry districts, such as Yerington, Nevada exceed 100 million tonnes.

Diamond drilling continues in the South Bolivar skarn zone between El Gallo and the inactive Increible mine in order to test the down-dip extension of the skarn. In addition, the Company is mobilizing additional drill rigs to the Bolivar property in order to accelerate testing of the mineralization in this area. A drill rig capable of drilling holes 1,000 m in length is also being mobilized in order to test the deeper down-dip portions of the zone.

The Company has commissioned an independent 43-101 technical report to Scott Wilson RPA, which is expected to be completed by early 2007.

Mr. Andre St-Michel, engineer and Executive Vice-President of Dia Bras, is the qualified person within the meaning of NI43-101.

Method of analysis

The analyses were conducted at Chemex Laboratories in Vancouver by fire assay for precious metals and atomic absorption for base metals.

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 newly acquired Cusi silver mining camp. The Company trades on the TSX Venture Exchange, under the symbol "DIB".

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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.

The TSX Venture Exchange does not accept responsibility for the adequacy or accuracy of this press release.

A map of Bolivar Mine is available at the following address: http://www.ccnmatthews.com/docs/bolivar_mine.pdf

Contact Information

  • Dia Bras Exploration Inc.
    Thomas L. Robyn
    Execuvtive Chairman
    514-393-8875 ext. 241
    or
    Dia Bras Exploration Inc.
    Rejean Gosselin
    President
    514-393-8875 ext. 241
    www.diabras.com
    or
    Sun International Communications
    Nicole Blanchard
    Managing Partner
    450-627-6600