Grande Portage Resources Ltd.: Drilling Successfully Intersects Old Sport Horizon-Promising New Zones Discovered
Monday March 26, 7:00 am ET
VANCOUVER, BRITISH COLUMBIA--(CCNMatthews - March 26, 2007) - Grande Portage Resources Ltd. (TSX VENTURE:GPG - News; "Grande Portage" or "the Company") is pleased to announce that it has successfully intersected massive sulphide mineralization at the projected depth on the Old Sport Horizon. The Old Sport Horizon was the host rock for two former producing underground mines-Coast Copper and Benson Lake. The mines produced appreciable amounts of copper, gold, silver, cobalt and iron over almost a decade before closing in late 1972 due largely to the low commodity prices of the day.
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Grande Portage has been exploring the Merry Widow project under the premise that there exists significant remaining tonnage at the old open pits peripheral to the magnetite zones and in the Old Sport Horizon either along strike extensions or within the old workings. The airborne geophysics completed confirmed potential strike extensions over 8 kilometres while a review of former reports suggest a copper cut off grade had been previously used to delineate mineable ore. Substantial amounts of mineralized skarn material remain untested.
The first hole drilled in 35 years into the Old Sport Horizon intersected 3.46 metres, from 584.07m to 587.53m of massive sulphides comprising of 70% magnetite, 2-7% chalcopyrite, 2-5% pyrhhotite, and 1-3% pyrite within a garnet epidot skarn assemblage. Within the rock unit above, a flow volcanic, chalcopyrite and pyrite up to 3% have replaced and infilled vessicles. Below the massive sulphide, from 587.53m to 590.34m was weakly mineralized epidote garnet skarn with 1-2% chalcopyrite before intersecting the Karmutsen Volcanics. The top 1.5 metres of Karmusten also contained 2-3% chalcopyrite as fracture fillings.
Of particular interest were two earlier intersections of garnet-epidote skarn mineralization. From 244.60m to 257.86m up to 5% magnetite as blebs and clusters and less than 1% chalcopyrite in skarn were intersected while from 353.86m to 361.71m it was weakly mineralized but also within garnet-epidote skarn.
This is relevant as it suggests that the skarn related massive sulphide mineralization may be more pervasive than originally conceptualized and following more closely along the margins of and extending from the gabbro intrusive rather than merely permeating along zones of obvious weakness such as the Old Sport and Merry Widow zones. Further drilling stepping in closer to the gabbro core will assist in this determination.
At present, all relevant core has been split and is being readied for transport to ALS Chemex Labs, North Vancouver, B.C. The drill has moved to the second site and has started drilling.
Warren Robb, P. Geo., and George Nicholson, P. Geo., are the qualified persons for this project, and have reviewed and verified the contents of this news release.
ON BEHALF OF THE BOARD OF DIRECTORS
Alistair MacLennan, President/CEO
About Grande Portage Resources Ltd.
Grande Portage Resources Ltd. is a mineral exploration and development company focused on massive sulphide exploration in British Columbia. Grande Portage is operated by experienced managers and professionals who have been effective in discovery, mine development, and mining operations throughout North and South America, Africa, Europe, and Central Asia.
Statements about the Company's future expectations and all other statements in this press release other than historical facts are "forward-looking statements". The Company intends that such forward-looking statements be subject to the safe harbours created thereby. Since these statements involve risks and uncertainties and are subject to change at any time, the Company's actual results may differ materially from the expected results.
The TSX Venture Exchange has not reviewed and does not accept responsibility for the adequacy or accuracy of the content of this news release.
Contact:
Mr. Ian Klassen
Grande Portage Resources Ltd.
(604) 290-5762
Website: www.grandeportage.com
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Source: Grande Portage Resources Ltd.
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