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Message: Bolivar: Fourth Quarter Drilling Results

Bolivar: Fourth Quarter Drilling Results

posted on Feb 11, 2009 09:42AM
February 11, 2009
Dia Bras Exploration Bolivar: Fourth Quarter Drilling Results
MONTREAL, QUEBEC--(Marketwire - Feb. 11, 2009) - Dia Bras Exploration Inc. (TSX VENTURE:DIB) is pleased to announce the results of drilling at Dia Bras' Bolivar property during the fourth quarter of 2008, which resulted in the discovery of two new mineralized areas, the Guadalupe and La Herradura zones. At the Guadalupe drilling intercepted 3.0 m @ 5.98% Cu and 43.49% Zn, while at Herradura a hole cut 6.3 m @ 5.59% Cu and 39.40% Zn.

Drilling of previously-discovered zones intercepted high grades of copper and zinc, as reported below.

Drill meterage by area for the second half of 2008 is presented in the following table:

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                                                         2008 2009
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             by zone        July   Aug  Sept   Oct   Nov  Dec  Jan   Total
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Underground  Brecha Linda E    0     0     0   336     0    0    0     336
             La Herradura      0     0     0   264   477   78    0     819
             San Angel       538   732   529    99     0    0    0    1898
             San Francisco     0     0     0   249   645   81    0     975
             Selena            0    54   297   159     0    0    0     510
             Titanic 2         0     0     0     0     0    0    0       0
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Mine Total                   538   786   826  1107  1122  159    0    4538
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Surface      Bolivar Alta
             Ley             147   122   153     0     0  390  126     938
             Bolivar Sur     278   501     0     0     0    0  249    1028
             El Gallo        825   835   585     0     0    0    0    2245
             El Val            0     0     0     0     0    0    0       0
             La Increible      0     0     0     0     0    0    0       0
             La Narizona       0     0     0     0     0    0    0       0
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Surface Total               1250  1458   738     0     0  390  375    4211
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Grand Total                 1788  2244  1564  1107  1122  549  375    8749
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Meterage shows a significant decline in output in the fourth quarter of the 2008 program as development drilling wound down. The Company's exploration emphasis shifted from development and reconnaissance drilling to underground exploration for new high-grade copper-zinc resources for the Bolivar pilot mining.

Bolivar Fourth Quarter Drilling and Assay Results

El Gallo Area

Copper-gold-silver mineralization crops out on surface approximately 70 metres above the San Antonio stope in the Bolivar Sur area of El Gallo (refer to accompanying map). The northwest strike and steep northeasterly dip of the Bolivar Sur mineralization suggests that it connects with the San Antonio mineralization encountered at depth.

To view the map please visits the following link: http://www.diabras.com/en/newscenter...

Drill holes DB08B274 and DB08B275 were drilled from surface steeply to the southwest to establish this connection. Drill hole DB08B275 encountered no mineralization between surface and the San Francisco stope; however, El Gallo Lower Skarn mineralization was encountered at depth as can be seen in the table below.

Drill holes DB08B271, DB08B272 and DB08B273 were all drilled as part of the 2008 drilling program to test the El Gallo skarn horizons. Drill Hole DB08B271 encountered El Gallo upper and intermediate skarn mineralization. Both DB08B272 and DB08B273 encountered the El Gallo Lower Skarn.

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Drill                                True     %      %     Ag     Au      %
 Hole     Workplace   From      To  Width    Cu     Zn    g/t    g/t     Fe
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DB08B271  El Gallo   85.90  109.00  22.00  2.48   0.07  37.95   0.49  22.64
                    173.25  174.50   1.00  1.87   0.14  21.50   0.66  37.10
                    185.25  193.10   7.00  0.81   0.03  17.23   0.42  22.34
                    201.00  202.00   1.00  0.96   0.01  10.80   0.57   9.58
                    206.70  207.70   1.00  1.65   0.02  23.30   1.45  11.60
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DB08B272  El Gallo  260.00  270.00  10.00  2.62   0.15  39.22   0.59  29.84
                    274.00  275.30   1.30  0.97   0.00  21.00   1.00  10.25
                    278.90  280.40   1.50  1.11   0.01  11.40   1.55  14.15
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DB08B273  El Gallo  196.20  216.50  20.30  1.64   0.13  24.13   0.43  32.63
                    223.00  224.40   1.40  1.13   0.02  14.60   1.27  14.10
                    253.65  254.40   0.75  0.83   0.04  12.00   0.87  23.00
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DB08B274  El Gallo   79.85   81.85   2.00  0.82  18.15   9.80   0.05   5.51
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DB08B275  El Gallo  114.90  122.05   7.15  1.43   0.47  29.25   0.09  28.62
                    209.10  209.90   0.50  2.06   0.22  45.80   0.30  39.10
                    220.35  221.30   0.60  1.16   0.02  12.90   0.77  20.40
                    225.55  226.35   0.40  2.24   0.01  23.70   1.39  16.40
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San Angel Area

A spray of eight underground diamond drill holes was drilled north through the San Angel and associated wall rock mineralization at and just above Level 6. The purpose of these holes was to look at the extent of this copper-dominant mineralization at depth and to determine the nature of the granodiorite dike as a mineralizer or a channelway for mineralizing solutions.

Although some high-grade chalcopyrite and sphalerite exists along and within the dike, it is generally discontinuous and of lower grade. Its character is like a breccia zone rather than the massive replacement ores found elsewhere in the mine. Mineralization appears to be localized along the dike at its intersection with copper-zinc runs, and that, considering compositional and textural similarities to the main stock and that the dike is itself mineralized and altered, all suggest the dike was a conduit for mineralizing solutions during mineral deposition.

The drill holes tabulated below show that San Angel mineralization offers potential for low grade copper, silver, and gold resource rather than Fernandez-type high grade copper zinc mineralization.

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Drill                                   True      %       %      Ag      Au
 Hole      Workplace   From       To   Width     Cu      Zn     g/t     g/t
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DB08BM178  San Angel  68.60    69.65    1.00   0.88    0.04   30.80    0.01
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DB08BM180  San Angel   7.30     7.87    0.57   0.24   18.65   11.40    0.02
                      49.55    51.05    1.50   0.60    0.21   87.60    0.16
                     117.30   122.41    5.11   1.26    0.01   19.74    0.05
                     124.82   130.20    5.38   1.53    0.01   12.65    0.48
                     132.30   136.88    4.58   4.55    0.01   89.64    0.45
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DB08BM182  San Angel  11.20    12.00    0.80   1.53   15.65    16.5     0.7
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DB08BM184  San Angel   40.6    44.25     3.5   1.51       0    6.78    0.78
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DB08BM185  San Angel   9.35      9.8    0.38    3.2       2      72    0.24
                       16.8     17.8     0.9   1.47    0.01    11.6    0.04
                       29.7     33.7     4.0   1.43    0.02   18.26    1.34
                      55.35     55.8    0.45    0.6    0.02    52.9    0.75
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DB08BM186  San Angel   11.4     11.9    0.42   0.58    13.3      17    0.05
                       32.7     35.7     3.0   1.82       0    38.2    1.14
                         84       86     2.0   1.78    0.01   54.45    1.98
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DB08BM187  San Angel   9.65    11.75       2   0.15    5.84    3.49    0.01
                       38.1    39.05    0.95   5.05    17.6     294    1.82
                      44.95    45.95       1   0.11    0.02     194     0.4
                      62.75     63.2    0.45   0.13    20.8    31.8    0.04
                        116      124    8.00   0.31     2.8   21.88    0.36
                        131      132     0.9   1.31    0.01    28.3    0.04
                      137.4    143.1     5.7   2.08    0.02    25.4    0.72
                      168.3    172.2     3.5   0.98    0.01   13.15    0.29
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DB08BM188  San Angel    4.6      5.9     1.3   0.71   19.02    34.4    0.09
                         19       22       3   0.56     2.7    12.1    0.03
                         38       42     3.7   1.07    0.03   59.38     0.6
                         50       51     0.9   0.15    4.06    12.7    0.05
                         66       67     0.9   0.22    3.78    11.1    0.05
                         70       82    11.2   0.45    2.99   24.37    0.15
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Guadalupe Area

Press Release number 27 dated December 17, 2008 described new discoveries at Brecha Linda East and the Selena extension called the Guadalupe Area, two new exploration areas within 100 meters of existing workings. The Guadalupe area consists of a cluster of three mineralized zones at the structural intersection of the Fernandez - Rebecca Run, down-dip projection of the Brecha Linda manto, the San Angel Dike, and the NW trending Felsic Dike.

Intercepts from Guadalupe area are:

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Drill                                   True      %       %      Ag      Au
 Hole      Workplace   From       To   Width     Cu      Zn     g/t     g/t
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DB04B102   Guadalupe  135.0    136.0    1.00   0.54   14.05    20.3     .05
                      148.6    153.6    5.00   0.88    8.13    49.9    0.19
                     166.65    174.6    7.95   0.65    8.01   43.34    0.32
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DB04B119   Guadalupe  118.0    122.0     4.0   1.84   20.24   16.33    0.03
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DB08BM183  Guadalupe  168.4    169.0     0.6   1.63    0.08    17.6    0.27
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DB08BM189  Guadalupe  116.7   120.17    3.00   5.98   43.49   74.74    0.13
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DB08BM190  Guadalupe  63.07    64.85    1.50   2.94   20.40   34.48    0.05
                      75.85     80.3    4.00   2.74   38.16   40.46    0.08
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DB08BM193  Guadalupe  70.24    70.64     0.4   0.23    5.81    24.6    0.06
                       74.1     75.8     1.7    .06   11.75    6.76    0.03
                     106.44   113.24     6.8   0.16    5.72    5.38    0.03
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La Herradura Area

The La Herradura area is east-southeast of the Titanic stope on the strike of the Titanic copper-zinc Run. The area lies east of the north trending felsic porphyry dike and fault zone that bisect the Bolivar district. Secondary felsic porphyry dikes intersect the main north-south dike and extend west-northwest and east-southeast occupying the Titanic structure.

Four holes were drilled out of Selena to explore the area. Mineralization, encountered previously from surface, lies to the east across the felsic dike and fault zone. New mineralization occurs over 100 meters above Titanic-type mineralization to the west suggesting that the fault offsets either the Titanic Copper-Zinc Run or favorable host rocks up and to the west. Holes were drilled at the maximum inclinations of Dia Bras' drilling machines and failed to intercept the Herradura mineralization to the west across the dike. A new hole was collared on surface and drilled down into the Herradura target. It is still in progress and will be reported separately once completed.

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Drill                                   True      %       %      Ag      Au
 Hole      Workplace   From       To   Width     Cu      Zn     g/t     g/t
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DB08BM196  Selena II   7.55    13.87    6.32   4.63   26.03   68.26    0.07
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DB08BM199  La
           Herradura  91.70    92.40     0.7   0.72    2.99   73.10    1.70
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DB08BM202  Selena II    0.0     0.83    0.70   0.64   27.90   34.10    0.04
                        6.8     17.0    10.0   3.71   31.18   43.11    0.07
                       72.0    72.95     0.8   0.74    7.71   67.10    0.65
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DB08BM203  La
           Herradura   5.20    11.50    6.30   5.59   39.40   84.10    0.11
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Although this test of the Herradura zone was limited by drill inclination, high-grade mineralization was encountered near the collar of DB08BM199 and DB08BM203 where the holes penetrated the western extent of the Fernandez-Selena Run. Here DB08BM203 encountered 10 metres of 5.59% Cu, 39.4% Zn, 0.11 g/t Au and 84.1 g/t Ag. Additional holes are planned from surface to continue exploration of this target.

San Francisco

Three holes were drilled in San Francisco to close off the area of mineralization as follows:

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Drill                                True     %      %     Ag     Au      %
 Hole     Workplace   From      To  Width    Cu     Zn    g/t    g/t     Fe
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DB08BM192 San
          Francisco 169.17  170.80    0.6  0.27   1.44  41.63   0.17   4.83
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DB08BM197 San
          Francisco 156.20  163.20    7.0  0.71   3.34  32.11   0.21   5.10
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DB08BM200 San
          Francisco 151.60  152.07    0.4  0.14   2.97   1.60   0.00   2.88
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Method of analysis

Samples were prepared at the 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 done by Induction Coupled Plasma (ICP) at Chemex.

Quality control

The quality assurance-quality control (QA-QC) of Dia Bras has been described in detail in both RPA's 43-101 reports of December 2006 at Cusi and October 2005 for Bolivar.

The technical content of this news release has been approved by Eugene Schmidt, RPG and Vice President of Exploration and Geology for 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 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 map is available at the following address : http://media3.marketwire.com/docs/DI...
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