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Message: Bolivar: Fourth Quarter Drilling Results
| February 11, 2009 | ||||||
| Dia Bras Exploration Bolivar: Fourth Quarter Drilling Results | ||||||
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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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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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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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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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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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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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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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