Yorbeau Resources Inc.
TSX : YRB.A

Yorbeau Resources Inc.

August 18, 2005 16:51 ET

Yorbeau Correlates the Newly Outlined Gold Zones Identified on the Cinderella Block with Zones on the Astoria Block

MONTREAL, QUEBEC--(CCNMatthews - Aug. 18, 2005) - Further to its recently-completed surface diamond drilling program carried out on the Cinderella Block of its Rouyn property, Yorbeau Resources Inc. (TSX:YRB.A)("Yorbeau" or the "Company") has undertaken a review of past work records to trace along strike the newly-outlined gold-bearing horizons called zones no. 3 and 4 (press release of June 15, 2005). These gold-bearing zones are located in the south half of the Larder Lake Break, south of the upper half containing carbonate rocks. They consist of gold directly associated with sulfide mineralization, commonly called 'flow' mineralization.

This review of past work records, in the light of information on the newly outlined gold zones identified on the Cinderella Block, has resulted in the Company being able to correlate the newly outlined zones with zones on the Astoria Block to the east. This is regarded as extremely significant as it provides evidence that the gold grade in zones no 3 and no 4 increases at depth and confirms that the zones in question have a very considerable strike length.

Yorbeau's Rouyn property straddles the Larder Lake Break along a distance of 12 kilometers and is located just a few kilometers south of the Town of Rouyn-Noranda, Quebec. Formerly referred to the Astoria I and II, the property comprises several contiguous blocks. Starting at the western boundary of the property and going east, these blocks are called the Augmitto, Cinderella, Lake Gamble and Astoria Blocks which together account for approximately 8 kilometers of the total distance of 12 kilometers covered by the whole property. In January of this year the Company published a resource calculation relating to a portion of the Astoria Block in the vicinity of the existing shaft which indicated a gold resource of 410,000 oz.

After extensive analysis, zones no. 3 and 4 identified in the recently completed drilling program on the Cinderella Block have been found to extend eastward from the west boundary of the Augmitto Block along a distance of 6 kilometers to the Astoria Block where it would correlate with zone AW in the vicinity of the Astoria shaft. During the 1990's 163,465 metric tonnes having a recovered grade of 5.25 g of gold per tonne were mined and milled from the AW zone from the 7th level (300 meters below surface) to the 10th level (450 meters below surface). Below this level, the zone was tested by underground diamond drilling along a strike length of 150 meters to a further depth of 200 meters. The zone was intersected in all 13 holes which returned an average grade of 6.18 g of gold per tonne over an average true width of 3.28 meters.

At the western limit of the mined out area, the zone is cut off by a northeast-striking diabase dike having a width of about 100 meters. West of this dike, six underground diamond drill holes were drilled from the 10th level. On section 7 540 E (Astoria mine grid), three holes testing from -525 to -700 meters below surface returned an average grade of 4.97 g/t over a core length of 6.93 meters representing a true width of 4.33 meters. The zone was also tested on section 7 480 m E with three holes where the best values were 3.0 g/t over a true width of 1.0 meter.

Both west and east of the dike, zone no 4 is open along strike and at depth. Moreover, it appears that gold values increase at depth.

Closer to surface, within the above section area, a fan of 6 holes was drilled from surface, the deepest hole reaching a depth of 200 meters below surface. Half of the holes intersected the diabase dike prematurely and missed the zone. Low values were intersected in two holes, the best being two parallel intersections grading 5.32 g/t and 4.29 g/t of gold over a true width of 1.0 meter.

Westward, on the Lake Gamble block, seven shallow holes were drilled in 1984 by Yorbeau. These returned several discreet gold values now interpreted to represent the tops of zones no 3 and 4. In addition, one short vertical hole drilled just north of Lake Gamble by a former operator returned 4.47 g/t over a core length of 0.60 meters. This appears to be an intersection of zone no. 4.

West of the Cinderella block, systematic drilling was done by Augmitto Explorations Ltd. during the 80's prior to initiating underground development. The no. 3 and 4 horizons appear to have been largely overlooked - the majority of the drilling having been stopped at the base of the upper half of the Larder Lake Break. Of the approximately 200 drill holes which have been checked, only 10 holes appear to have been drilled long enough at shallow depths to have intersected the no. 4 gold horizon and only 2 were long enough to have cut across the no. 3 horizon. In spite of this, however, significant intersections have been identified which are believed to be intersections of either zone no. 3 or no. 4. On section 9 900 ft E (Augmitto mine grid), hole S-41 returned a grade of 9.94 g/t along a core length of 0.91 meter. Hole S-39, drilled on the same section, returned 6.52 g/t over a core length of 0.52 meters. On section 9 580 ft E, hole S-40 returned 1.37 g/t over a core length of 0.91 meters. Further to the west, hole 85-S-231, drilled on section 7 450 ft E, returned 2.74g/t over a core length of 0.91 meters while hole 82-4 drilled on section 7 270 ft E returned 1.10 g/t over a core length of 6.10 meters.

West of Yorbeau's property, the same stratigraphic horizon that contains zone 4 has been associated with some of the largest and most profitable mines in the region, including the Kerr Addison. Furthermore, gold zones tend to occur in clusters, often being stacked one on top of the other in the stratigraphic column. The presence, confirmed by bulk sampling, of significant amounts of gold found in the carbonate rocks on the Augmitto and Cinderella Blocks suggest that the south portion of the Larder Lake Break located below the carbonate rocks which have yielded good values would constitute an excellent drilling target which remains largely untested. A program of diamond drilling is planned for later this year. This program would include initially 5 000 meters to be followed by, at a later date, by an additional 15 000 meters.

The above review was carried out by one of the Company's directors, Guy Hinse, P. Eng. a qualified person under National Instrument 43-101. The drilling results mentioned in this press release are all historical results which do not comply with National Instrument 43-101.

Contact Information

  • Yorbeau Resources Inc.
    G. Bodnar Jr.
    President
    (514) 384-2202
    (514) 384-6399 (FAX)
    or
    Yorbeau Resources Inc.
    David Crevier
    Chairman
    (514) 284-3663
    (514) 284-1961 (FAX)