Business & Finance
Wed, May 12, 2010Tue, May 11, 2010Mon, May 10, 2010Sun, May 9, 2010Sat, May 8, 2010Fri, May 7, 2010Thu, May 6, 2010Mon, January 11, 2010Dia Bras Confirms High Gold Grades at the Minerva Vein of its Cusi Property
Published in Business and Finance on Monday, May 10th 2010 at 11:41 GMT by Market Wire
MONTREAL, QUEBEC--(Marketwire - May 10, 2010) - Dia Bras Exploration Inc. (TSX VENTURE:DIB) is pleased to announce results of underground sampling of the Minerva vein, which is part of the Promontorio mine area of Dia Bras' Cusi property in Chihuahua State, Mexico. Gold grades up to 32 g/t occur in the sampled drift. Earlier surface sampling of the Minerva vein returned grades up to 5.5 g/t gold (see press release of November 15, 2007), and these new results confirm that the Minerva vein is a gold-rich vein. The vein also exhibits geochemical characteristics of veins in the Promontorio area compared to the Santa Eduwiges area, wherein Promontorio samples are generally much lower in base metals (0.00X-0.0X %) whereas Santa Eduwiges samples are higher (0.X-X.0%). These data indicate that the Promontorio veins are higher in the precious metals system than those at Santa Eduwiges, which is also consistent with the higher gold values in the Promontorio area.
"These results are very encouraging for us," stated Daniel Tellechea, President and CEO of Dia Bras. "As we develop the Promontorio veins for pilot-mining during 2011, we can forecast a higher gold production than we previously considered, in addition to our silver production."
Samples were collected in the drift at the 2085 m elevation of the Minerva vein (see Minerva Underground Sampling long section [ http://www.diabras.com/en/newscenter/2010/Minerva.pdf ]). Little is known of the history of the Minerva workings, only that development of a shallow shaft and some drifting were done, possibly 20-30 years ago or perhaps even earlier.
Dia Bras intends to conduct additional mapping and sampling of the Minerva vein and its immediate area. This work will be followed by surface diamond drilling as part of the long-range development and pilot-mining of the Promontorio project.
Table 1. Assay Results from Minerva Vein, Promontorio Mine, Cusi Project
| Sample Number | Width (m) | Au g/t | Ag g/t | Pb % | Zn % |
| 815647 | 1.10 | 0.94 | 117 | 0.106 | .055 |
| 815648 | 0.85 | 1.40 | 122 | 0.107 | .042 |
| 815649 | 0.85 | 4.43 | 568 | 0.343 | .113 |
| 815650 | 0.60 | 0.84 | 204 | 0.099 | .047 |
| 815651 | 1.45 | 0.27 | 17 | 0.017 | .018 |
| 815652 | 1.35 | 0.03 | 4 | 0.003 | .010 |
| 815653 | 1.10 | 0.05 | 3 | 0.003 | .027 |
| 815654 | 0.25 | 1.19 | 195 | 0.062 | .033 |
| 815655 | 0.65 | 0.21 | 56 | 0.014 | .015 |
| 815656 | 0.40 | 4.55 | 1,060 | 0.272 | .068 |
| 815657 | 0.60 | 0.35 | 41 | 0.063 | .019 |
| 815658 | 0.75 | 4.31 | 312 | 0.084 | .042 |
| 815659 | 0.80 | 0.51 | 47 | 0.016 | .011 |
| 815660 | 0.65 | 2.12 | 773 | 0.059 | .057 |
| 815661 | 0.45 | 2.04 | 369 | 0.072 | .041 |
| 815662 | 0.70 | 2.35 | 432 | 0.110 | .043 |
| 815663 | 0.70 | 1.11 | 226 | 0.032 | .032 |
| 815664 | 0.35 | 32.70 | 2,530 | 0.380 | .453 |
| 815665 | 0.50 | 3.51 | 657 | 0.128 | .057 |
| 815666 | 0.40 | 1.12 | 287 | 0.054 | .035 |
| 815667 | 0.40 | 2.25 | 246 | 0.074 | .033 |
| 815668 | 0.50 | 0.99 | 142 | 0.034 | .029 |
| 815669 | 0.25 | 2.79 | 489 | 0.072 | .070 |
| 815670 | 0.60 | 1.52 | 99 | 0.065 | .046 |
| 815671 | 0.35 | 7.79 | 546 | 0.343 | .141 |
| 815672 | 0.30 | 30.00 | 980 | 0.855 | .151 |
| 815673 | 1.00 | 0.22 | 32 | 0.031 | .043 |
All assays by Chemex
Method of Analysis
Samples sent for analysis are 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 ALS Chemex.
Quality Control
The quality assurance-quality control (QA-QC) of Dia Bras has been described in detail in both of 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., RPG, CPG and Director of Dia Bras, a Qualified Person as defined in NI 43-101.
About Dia Bras
Dia Bras Exploration Inc. is a Canadian exploration mining company focused on precious and base metals in the State of Chihuahua and other areas of northern Mexico. The Company is committed to developing and adding value to its most advanced assets – the Bolivar copper-zinc project and the Cusi silver mining camp. The Company's shares trade on the TSX Venture Exchange under the symbol "DIB".
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.
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.
