ECU Silver Mining Inc.
TSX : ECU

ECU Silver Mining Inc.

March 06, 2008 11:26 ET

ECU Silver Confirms Eastern Extension of Terneras Vein

Highlights - Terneras vein in new cross-cut yields 3.4 g/t Gold, 1,095 g/t Silver, 5.66% Pb, 6.06% Zn over 12 metres (39.36 feet) in length and over a total width of 1 metre (3.28 feet); - Vertical extension of eastern portion of the Terneras vein now confirmed over 450 metres (1,476 feet); - Confirmed the extension of the Terneras vein on the east side of the Tres Aguilas fault;

TORONTO, ONTARIO--(Marketwire - March 6, 2008) - ECU Silver Mining (TSX:ECU) ("ECU Silver" or the "Company") is pleased to announce the latest assay results from a cross-cut extending from the San Juanes adit to the Terneras vein in which the extension of the Terneras vein was confirmed on the east side of the Tres Aguilas fault.

In early January of 2008, the Company decided to continue the San Juanes adit and began working on a cross-cut aimed at verifying the continuity of the main east-west trending Terneras vein on the east side of the Tres Aguilas fault which intersects the Terneras vein. This work was based on interpretations from the 3-D geological model of the recent NI 43-101 mineral resource estimate announced on January 24, 2008. The Company is pleased to report the following results from this most recent work at the San Juanes adit.

The Terneras vein was cut 200 metres below surface and has been followed, so far, along strike for 12 metres on the east side of the Tres Aguilas fault. The cut was sampled every three metres with the results shown below in Table 1. The table shows assay results for the three series of chip samples, the average of these chip samples and the average grade diluted over a one metre thickness, using nil values for the diluted host rock. The chip samples averaged 0.17 metres grading 7.11 g/t gold, 1,865 g/t silver, 13.01% lead and 9.04% zinc. Also shown in the table is a metallurgical sample for the entire 12 metre cut taken over a one metre total width which yielded 3.4 g/t Au, 1,095 g/t Ag, 5.66% Pb and 6.06% Zn.

This confirmation of the strike and dip of the Terneras vein is consistent with the drill intercept reported October, 16th 2007, where 0.30 metres grading 2.70 g/t gold, 2,097 g/t silver, 0.55 % copper, 17.95% lead and 11.57% zinc was reported in hole SJ 14-02 approximately 256 metres below this recent cross-cut. As such, this cross-cut provides additional confirmation that we have found the eastern extension of the main Terneras vein. The cross-cut and previously reported drill intercept identify an initial 450 metres (1,476 feet) of vertical extension for the 12 metre lateral portion of the Terneras vein.



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Table 1 - Terneras Vein Eastern Extension - South Branch
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Sample # Width m Au g/t Ag g/t Cu % Pb % Zn %
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47572 0.30 5.8 886 0.14 6.81 8.80
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47599 0.12 4.14 3,949 0.52 30.04 5.76
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48604 0.10 14.60 2,303 0.31 9.98 13.72
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Average 0.17 7.11 1,865 0.26 13.01 9.04
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Diluted 1.0 1.23 323 0.05 2.26 1.57
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Metallurgy 1.0 3.4 1,095 0.15 5.66 6.06
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The calculated assays from the metallurgical test sample clearly demonstrate that the host rock carries significant values in precious and base metals. The metallurgical test sample graded much higher than the diluted average over the same width which used nil in the host rock. The metallurgical sample also gave recoveries of 90.4% for Pb and 86.2% for Ag in the lead concentrate with a further 8.2% of Ag and 82% of Zn in the zinc concentrate, with both concentrates being of very high marketable quality.

This can only be explained by a phenomenon known as mineralized stratigraphical planes and are observed in the drift. Essentially, the mineralization extends along the sedimentary planes on each side of the Terneras vein, whereupon, small veinlets are extending for several centimetres on each side of the Terneras vein providing for good average grades to the whole metre section when including dilution.

Readers are cautioned that until a prefeasibility study is completed, there are no assurances this latest mineralized zone will be economically viable.

A further point of high interest is that the main cross-cut driven to test the eastern extension of the Terneras vein transected what was supposed to be a "barren" section. This section of the cross-cut was in fact not barren and the Company was surprised and pleased to have obtained the following results, shown in Table 2 below.



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Table 2 - Veinlets in X-Cut
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Sample # Width m Au g/t Ag g/t Cu % Pb % Zn %
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47525 0.12 1.40 180 0.03 4.38 6.20
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47576 0.15 2.00 204 0.03 1.07 4.23
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47577 0.12 1.70 2,385 0.41 2.97 3.45
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47526 0.15 1.00 1,016 0.24 2.52 3.20
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In that portion of the cross-cut, thought to be barren, several veinlets were cut that justify more investigation based on the grades shown above in Table 2 (for precious and base metals). The expectation both along strike and vertically is either to define a possible wide low grade stockwork type zone or to find "chimneys" along the same veins.

Readers are cautioned that these veinlets may not extend much further than what is currently visible in our working.

Michel Roy, Chairman and Chief Executive Officer, said that: "As stated in October of 2007, the Company believed that a brand new area of exploration was now available in the eastern sector of the Terneras vein which had never been tested before. We are pleased to have confirmed the extension of the Terneras vein on the east side of the Tres Aguilas fault and the system continues to show tremendous continuity and robust grades which is typical of these extensive-type veins."

Our exploration work will continue on the area surrounding the eastern extension of the Terneras vein. The work will include a continuation of the cross-cut further to the north in search of new veins. We will also continue drifting east along the Terneras vein to provide additional confirmation of the ongoing lateral extension of the Terneras Vein. We plan to also open a new drift to follow certain prominent veinlets where we anticipate that these veinlets are in fact indicators of the depth extensions of numerous old workings, which occur near the surface above our working area.

All widths are true widths. Samples were assayed at the ERSA laboratory in Torreon, Coahuila, Mexico which is currently in the process of being certified. Mr. Michel Roy, P. Geo., a "qualified person" within the meaning of NI 43-101, prepared the technical information disclosed in this news release.

ECU Silver Mining Inc. is focused on the exploration, development and mining of gold, silver and base metals at its Velardena District Properties in Durango, Mexico. The area includes five historical mines - Santa Juana, Terneras, San Mateo, San Juanes, and the San Diego mine. ECU is defining the "Mineralized Corridor" at Santa Juana and also further defining several higher grade narrow veins within the area. ECU's mission is to become a pre-eminent silver producer through the development of existing, and additional potential resources at Velardena.

Statements in the release that are "forward-looking statements" are based on current expectations and assumptions that are subject to risks and uncertainties. Actual results could differ materially. We undertake no duty to update any forward-looking statement to conform the statements to actual results or changes in our expectations.

Contact Information

  • ECU Silver Mining Inc.
    Stephen Altmann
    President
    (416) 644-8640
    (416) 644-8801 (FAX)
    Website: www.ecu.ca