PR 8/15/07, Ayelen, Inez and new Bianca veins.
Silver Standard and Esperanza Update San Luis Exploration
Wednesday August 15, 5:00 am ET
VANCOUVER, BRITISH COLUMBIA--(Marketwire - Aug. 15, 2007) - Silver Standard Resources Inc. (TSX:SSO - News; NASDAQ:SSRI - News) and Esperanza Silver Corporation (TSX VENTURE:EPZ - News; PINK SHEETS:ESPZF - News) are pleased to announce more results of ongoing diamond drilling at the San Luis high-grade gold and silver joint venture property in central Peru.
Bianca Vein
Drilling on the Ayelen vein has identified a previously unknown sub-parallel vein. The Bianca vein, which does not outcrop, is located between the Ayelen and Ines veins. To date, two holes have intersected the new vein with additional drilling planned to further define it. Preliminary indications are that the Bianca vein is a splay off of the Ayelen vein.
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San Luis Project - Selected Diamond Core Drill Results - August 2007
BIANCA VEIN
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Drill From To Interval Gold Silver Interval Gold Silver
Hole (meters) (meters) (meters) (g/t) (g/t) (feet) (oz/ton) (oz/ton)
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A-SL-079 125.8 130.0 4.20 8.1 503.3 13.8 0.24 14.7
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A-SL-084 81.4 84.5 3.1 3.9 220.1 10.2 0.11 6.4
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Intervals refer to core length rather than true thickness which is to be
determined.
Ayelen Vein Extended
Drilling on the Ayelen Vein continues to extend the drill-tested gold and silver mineralization along strike, and to infill prior drilling to better define the mineralization before the commencement of an underground exploration program planned to begin later this year, subject to receipt of permits. Significant drill results include:
- in drill hole A-SL-077, an angled hole drilled north of drill hole A-SL-035, a 15.4-foot interval averaging 0.52 ounces per ton gold and 19.2 ounces per ton silver (4.7 meters averaging 17.9 grams per tonne gold and 657.0 grams per tonne silver).
- in drill hole A-SL-069, an angled hole drilled beneath hole SL-06-025, a 18.6-foot interval averaging 0.18 ounces per ton gold and 7.9 ounces per ton silver (5.7 meters averaging 6.2 grams per tonne gold and 271.4 grams per tonne silver).
The Ayelen vein has been identified over 600 meters of strike length and exploration is continuing to define the structure to the south. High grade mineralization has been found up to 225 meters below the top of the ridge down to the 4,350 meter level. Holes intersecting the Ayelen vein below that level have only intersected anomalous gold and silver mineralization. Recent step out drill results for the Ayelen Vein are summarized below:
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San Luis Project - Selected Diamond Core Drill Results - August 2007
AYELEN VEIN
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Drill From To Interval Gold Silver Interval Gold Silver
Hole (meters) (meters) (meters) (g/t) (g/t) (feet) (oz/ton) (oz/ton)
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A-SL-067 64.0 65.5 1.5 0.9 80.8 4.9 0.03 2.4
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A-SL-069 229.0 234.7 5.7 6.2 271.4 18.6 0.18 7.9
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A-SL-070 254.8 256.0 1.2 0.4 126.0 3.9 0.01 3.7
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A-SL-072 58.6 59.9 1.3 1.8 135.9 4.3 0.05 4.0
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A-SL-073 33.6 36.9 3.3 0.2 33.5 11.1 0.01 1.0
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A-SL-075 210.0 212.1 2.1 2.5 147.5 6.9 0.07 4.3
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A-SL-076 259.3 260.0 0.7 0.7 185.0 2.3 0.02 5.4
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A-SL-077 42.1 46.8 4.7 17.9 657.0 15.4 0.52 19.2
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A-SL-078 46.6 47.7 1.1 3.3 114.0 3.6 0.09 3.3
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A-SL-080 198.6 199.9 1.3 0.7 144.0 4.3 0.02 4.2
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A-SL-081 182.8 184.3 1.5 0.4 25.0 4.8 0.01 0.7
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Intervals refer to core length rather than true thickness which is to be
determined.
Drilling of Other Veins
Drill hole A-SL-082 was spotted to test for deep extensions of the Ayelen vein and collared to the east of the Ines vein. It intersected comparable gold and silver mineralization in the Ines vein as found in nearby trenches.
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San Luis Project - Selected Diamond Core Drill Results - August 2007
INES VEIN
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Drill From To Interval Gold Silver Interval Gold Silver
Hole (meters) (meters) (meters) (g/t) (g/t) (feet) (oz/ton) (oz/ton)
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A-SL-082 15.5 19.0 3.5 10.0 115.4 11.5 0.3 3.4
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Intervals refer to core length rather than true thickness which is to be
determined.
The eastern veins, Regina and Paula, have each been further tested with a single drill hole at depth with neither hole encountering significant mineralization. A second drill hole that tested the Paula vein at depth is currently in the lab for assaying.
Work has commenced on mapping, rock sampling and prospecting new areas of the project to locate the sources of the stream sediment anomalies identified in the reconnaissance work carried out on the joint venture's 250 sq. km (96 sq. mile) block late in 2006.
Joint Venture Interests
Silver Standard holds a 55% interest in the San Luis joint venture and Esperanza 45%. Silver Standard has elected to increase its interest in the joint venture to 70% by funding costs required to complete a feasibility study. Thereafter, Silver Standard has the right to increase its interest to 80% by funding the property through to production.
About Esperanza
Esperanza is an exploration company focused on precious metals and is founded on the experience and success of its management and field teams in discovering ore bodies. Its properties include the San Luis high-grade gold and silver discovery in central Peru and the 100%-owned Cerro Jumil bulk-tonnage gold project in Morelos State, Mexico. It has other exploration interests in Peru, Mexico and Bolivia. The company's objective is to take properties up to the resource definition stage and then find partners to take them into production.
About Silver Standard
Silver Standard is a well-financed silver resource company that continues to seek growth through exploration and development of its own silver projects. Silver Standard also has an approximate 14% equity ownership of Esperanza and participated in this year's equity offering and increased its percentage interest. (SSRI-SL)
QUALIFIED PERSON: Kenneth C McNaughton, M.A.Sc., P.Eng., vice president, exploration, Silver Standard Resources Inc., is the Qualified Person (QP) under NI 43-101 responsible for the San Luis exploration program. He has verified the data disclosed in this news release, including sampling, analytical and test data. Field work has been conducted by joint venture personnel under his supervision. All samples were submitted to ALS Chemex in Lima, Peru for analysis.
For silver, initial analysis was completed using four-acid digestion with an ICP finish. For samples over 200 ppm silver, re-analysis was completed using four-acid digestion with an AA finish. For samples over 1 kg silver, re-analysis was completed using fire assay with a gravimetric finish.
For gold, initial analysis of 30 gram samples was completed using fire assay with an AA finish. For samples over 10 grams gold, re-analysis of 30 gram samples was completed using fire assay with a gravimetric finish. |
