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On September 25, 2008 Goldcorp acquired Gold Eagle Mines Ltd. Gold Eagle's principal asset is the Bruce Channel gold discovery which is situated along the prolifice Red Lake Trend, adjacent to Goldcorp's Red Lake Gold mine and immediately southwest of Goldcorp's past-producing Cochenour-Willan Mine.
The Bruce Channel Discovery (BCD) is located approximately 800 metres beneath the shallow Bruce Channel waterway that separates McKenzie Island from the Mainland.
SUMMARY
- Significant new zone of mineralization announced in August 2005 named, the Bruce Channel Discovery
- +85,000 metres of diamond drilling in 98 drill holes completed to date
- Current "footprint" of the BCD mineralized envelope are 1.45 kilometres in a vertical direction and horizantally, approximately 800 metres in a NE-SW direction and 450 metres in a NW-SE direction
- The BCD mineralized envelope remains open in all directions
Drilling is continuing along the Bruce Channel with the use of oriented wedges where an initial “mother” hole is drilled to intersect the targeted zone and a subsequent series of secondary holes are “wedged” off the mother hole to provide secondary intersections along the trend of the mineralized area.
SIMILARITIES to the RED LAKE, CAMPBELL and COCHENOUR-WILLANS MINES
- Geologically similar to Goldcorp Inc,’s adjacent Cochenour-Willans, Campbell and Red Lake Mines, where the mineralization is calssified as Archean greenstone-hosted quartz carbonate vein deposits.
- BCD is currently interpreted to be the significant extension of the mineralized system found at the past producing Cochenour-Willians Mine (approx. 1.24 million ounces of gold was mined at an average grae of 0.53 oz/t between 1939 and 1971).
- BCD is hosted within the Balmer Assemblage.
GEOLOGY
- Balmer Assembalge – The BCD mineralization is hosted within the Balmer Assemblage, a volcano-sdeimentary sequence dominated by mafic rocks with subordinate ultramafic rocks and associated metasediments.
- Meta sedimentary associated with the BCD comprise a range of lithotypes.
- Clastic sediments, typically siltstone/argillite and greywacke are the dominant type
- Chemical sediments comprised of “cherty” sections varying from chery siltstones to iron rich cherts which are locally termed “lean iron formations”.
- Bruce Channel Assemblage – the Balmer Assemblage consists of micro pebble and cobble polymictic conglomerates.
- The exact location and and nature of contact between the Bruce Channel Assemblage and the Balmer Assemblage is masked by shearing and intense alteration. (see “Schematic Model”)
- Biotitic alteration is the most common and pervasive metasomatic modification noted in the lithologies of the BCD (which often defines the outer limits of the perspective zone.
- Within the alteration more localized zones of carbonate alteration commonly associated with coincident silicification are significant in terms of gold mineralzation.
- Intense carbonate alteration appears to be a defining parameter for much of the gold mineralization. (see “Schematic Model”)
- Sulphide mineralization characterized by pyrrhotite and pyrite is commonly found throughout and is invariably present in sections containing or surrounding gold mineralization.
- Arsenopyrite mineralization occurs frequently within and around the gold zones and a strong association has been documented between extensive zones of fine grained acicular (felted) aresnopyrite and gold mineralization.
- Less common sulphides also indicative of the presence of gold include chalcopyrite, galena and sphalerite.
- Gold mineralization is primarily subject to structural as opposed to lithological controls and the mineralization is not restricted to any one lithotype but occurs in several lithologies once favorable structural conditions exist.
Visible Gold
- Coarse visible gold has been documented at numerous locations throughout the BCD.
- Two variations of visible gold mineralization has been documented to date
- Gold mineralization with juxtaposing veinlets of quartz and or quartz-carbonate.
- Gold mineralization in extensive brecciated zones in associated with extensive fine grained acicular aresnopyrite.
STEP-OUT DRILING PROGRAM
- 2008 drill program budgeted for up to 34,000 m of surface drilling
- Two deep rigs, each capable of drilling to depths of 2.5 km have been set up on either side of the channel, one on the mainland and one on the Island.
- Each rig will systematically step-out down the channel in a southwesterly direction towards the Finn Zone located some 500 m away.
- Step-out program expected to take up to 24 months to complete
- Smaller rig(s) will continue to work behind the step-out rigs to further delineate several of the high grade structures already identified within the BCD mineralized envelope.
- The information from the infill drilling will prove to be invaluable as Gold Eagle transitions from surface exploration to underground definition drilling.
Schematic Model
Photo Gallery
Maps
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