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Gold/Mining/Energy : Pacific Rim Mining V.PFG -- Ignore unavailable to you. Want to Upgrade?

To: Nexus who wrote (12381)	12/16/1999 9:55:00 AM
From: Alex Harrington	Read Replies (1) \| Respond to of 14627

Here's some news: NEWS RELEASE TRANSMITTED BY CANADIAN CORPORATE NEWS FOR: PACIFIC RIM MINING CORP. SEC FILE: 029704 TSE SYMBOL: PFG DECEMBER 16, 1999 Pacific Rim Mining Corp. Announces Luicho Target Expanded VANCOUVER, BRITISH COLUMBIA--Pacific Rim Mining Corp.'s on-going surface sampling program is continuing to fill in and expand the Luicho gold prospect on the Company's Luicho project in southern Peru. A total of 2,711 samples have been collected by Pacific Rim to date. The average grade of all of these samples is 1.82 g/t gold. Most of these samples were collected from the 'structural corridor'; a 250 meter wide zone in which a series of north-south and northeast-trending strike slip faults have intensely brecciated the host rock. The latest sampling has extended the outcropping mineralization in the structural corridor a further 350 meters to the south, for a total strike length to date of 1,850 meters and an average width of 250 meters. This gold anomaly remains open for expansion. The structural corridor has been separated into the Northeast, Central and South Zones, based on the intensity of brecciation and the degree of mineralization. The South Zone was doubled in length as a result of the latest sampling and now measures 650 meters long by 250 meters wide. The results of the sampling to date in each zone are summarized in the table below. /T/ Zone No. of samples average grade % of samples average grade of in total of total exceeding samples exceeding samples 0.31 g/t 0.31 g/t gold cutoff gold cutoff ----------------------------------------------------------------------- Northeast 527 1.03 g/t gold 64% 1.52 g/t gold Central 1030 3.48 g/t gold 73% 4.70 g/t gold South 461 1.29 g/t gold 59% 2.08 g/t gold Total for structural corridor 2018 2.34 g/t gold 68% 3.39 g/t gold /T/ Pacific Rim's understanding of the controls for gold mineralization at Luicho continues to grow. Gold mineralization is largely controlled by fracture density within the structural corridor. Mineralization is hosted by a series of sandstone units that underlie a shale unit. The sandstones are 400 meters thick. Pacific Rim has been able to sample the top 200 meters of this horizon and has encountered significant gold mineralization within this section. The highest grades of gold mineralization tend to occur in the sandstones immediately beneath the shales and over significant areas at fault intersections. Sampling of the South Zone is largely confined to the western side of the zone as the shale cap covers the majority of the South Zone area. As higher grades generally tend to be located in the center of the corridor (which is shale covered in the South Zone), the average grade of the South Zone may be understated. "Our confidence in the continuity and grade of the Luicho system has grown as we continue to unravel the details of the geologic controls of mineralization and increase the sample density. The very broad area of the surface gold mineralization puts Luicho in some very select company as a grassroots prospect" says Tom Shrake, CEO. Individual samples collected by Pacific Rim are continuous rock chip samples 2 to 3 meters in length. These samples are most often strung together to produce continuous rock chip channels 10 to 100 (plus) meters in length. Sampling is supervised by Pacific Rim's senior geologists Dave Ernst and Pete Dilles and the Luicho program is ultimately supervised by Tom Shrake, CEO of the Company. Samples are assayed by Bondar Clegg, an ISO9002-registered analytical laboratory in Vancouver, BC, after first being prepared at their facility in Lima. A check assay program is on-going with Chemex Labs. The Luicho program will be shut down for approximately 2 weeks over the Christmas holiday and sampling and mapping will resume in earnest in early January, 2000. A map outlining the new continuous rock chip samples is available at the Company's website (www.pacrim-mining.com) or by fax from the Company. On behalf of the board of directors, Thomas C. Shrake, CEO This news release contains forward-looking statements regarding upcoming programs and expected geological results. Actual results may differ materially from those currently anticipated in such statements.