The EB prospect is located approximately 5.5 kilometres east-southeast of the Shasta mine (094E 050), some 280 kilometres north of Smithers. There are 4 mineralized zones on the Brenda property: the EB zone, the Creek zone (094E 107), the White Pass area/Brenda zone (094E 147) and the Takla zone (094E 146).
The occurrence lies within the Omineca-Cassiar mountains at the southern end of the Toodoggone gold camp. The prospect occurs within a Mesozoic volcanic arc assemblage which lies along the eastern margin of the Intermontane Belt, a northwest- trending belt of Paleozoic to Tertiary sediments, volcanics and intrusions bounded to the east by the Omineca Belt and to the west and southwest by the Sustut and Bowser basins.
Permian Asitka Group crystalline limestones are the oldest rocks exposed in the region. They are commonly in thrust contact with Upper Triassic Takla Group andesite flows and pyroclastic rocks. These Takla rocks have been intruded by plutons and other bodies of the mainly granodiorite to quartz monzonite Early Jurassic Black Lake Suite and are in turn unconformably overlain by or faulted against Lower Jurassic calcalkaline volcanics of the Toodoggone Formation, Hazelton Group.
The dominant structures in the area are steeply dipping faults which define a prominent regional northwest structural fabric trending 140 to 170 degrees. In turn, high angle northeast-striking faults (approximately 060 degrees) appear to truncate and displace northwest-striking faults. Collectively these faults form a boundary for variably rotated and tilted blocks underlain by monoclinal strata.
The EB prospect is underlain by the Toodoggone Formation. Regional mapping has identified hornblende-plagioclase and plagioclase phyric andesite flows, tuffs and breccias with lesser lahar, conglomerate, greywacke and siltstone (Bulletin 86). Immediately to the north of the prospect a subcircular quartz diorite to granodiorite stock, 1.75 kilometres in diameter, is exposed. This stock is probably related to the Black Lake stock (part of the Black Lake Suite) situated 3.7 kilometres to the southwest.
Locally, a large, silicified breccia/stockwork zone, trending 008 degrees and dipping 68 to 82 degrees east. The zone has and exposed length of approximately 24 metres with a 2 to 4 metres width.
Work History
The area was first staked by Emil Bronlund in 1950 with the discovery of gold-bearing quartz veins along the banks of Jock and Red creeks.
In 1968 and 1969, Kennco Explorations Ltd. completed programs or rock and soil sampling on the area as the Pillar No. 1 and 2 groups.
The Brenda claims were staked in 1980 for Canmine Development Company Inc. In 1981, Canmine carried out a program of geology and geophysics. In 1982 and 1983, Golden Rule Resources Ltd. completed programs of prospecting, geological mapping, geochemical (rock, silt and soil) sampling and airborne geophysical surveys on the area as the Jock 1-5 claims. In 1984, hand trenching and prospecting was conducted. In 1985, Canmine optioned the property to Canasil Resources. Detailed mapping, geophysical surveys and soil sampling was conducted along Jock Creek. In 1987, trenching and geochemical surveys were completed in a joint venture with Cyprus Gold Canada Inc. A drill program in 1988 consisted of 4 holes for 426.22 metres on the Creek zone. In 1989, trenching and geophysical and geochemical surveys were completed on the Brenda property.
A program of follow-up trenching was conducted at the Brenda prospect in 1990 on the Creek zone, the White Pass east zone and the EB zone. A total of 45.5 metres of backhoe trenching was conducted on the EB zone with assay results from 25 samples of trench material indicated anomalous gold and silver. The highest silver and gold values came from samples 12117 and 12130, taken from the centre, lengthwise, along the trench. Assay values from sample 12117 were 4.920 grams per tonne gold and 138.2 grams per tonne silver; and from sample 12130, 3.360 grams per tonne gold and 162.9 grams per tonne silver (Assessment Report 20963).
In 1991, hand trenching and rock sampling were completed on the White Pass East zone, the EB zone and the Creek zone. A geochemical survey was completed on the White Pass East zone. Fifteen samples from a trench on the EB zone yielded values varying from 0.12 to 68.00 grams per tonne gold and 1.0 to 317.1 grams per tonne silver (Assessment Report 22272).
In 1992, two drillholes were completed on the Creek zone, four drillholes on the White Pass East zone and seven holes on the EB zone. None of the 7 holes drilled intersected ore grade mineralization with the highest assay value from drilling yielding 0.675 grams per tonne gold and 6.5 grams per tonne silver in hole EB 92-04 (Assessment Report 22820).
In 1993, Romulus Resources drilled 4 deep holes in the White Pass area on the Brenda zone. During 1994 through 1997, further programs of diamond drilling were performed on the Brenda property, primarily on the Brenda - White Pass (MINFILE 094E 147) zone.
In 2002, Northgate Minerals Corporation optioned the Brenda property from Canasil Resources Inc. A high-resolution airborne magnetic, radiometric and satellite imaging surveys followed by 1650 metres of diamond drilling in four holes on the Brenda - White Pass (MINFILE 094E 147) zone. In 2003, a program of rock and soil sampling and five diamond drill holes, totalling 1481.1 metres, were completed on the Brenda property. Three outcrop samples (24862 to 24864) from the EB zone area yielded values from 0.125 to 0.545 gram per tonne gold and 1.9 to 9.3 grams per tonne silver (Assessment Report 27422).
In 2004, a further five diamond drill holes, totalling 1445.7 metres were completed were completed on the property. After review of the 2004 data, Northgate returned the property to the vendor.
In 2007, Canasil Resources conducted a 32.2 line-kilometer 3-D Induced Polarization survey and five bore holes, totalling 1708 metres, centered over the White Pass (MINFILE 094E 147) zone area. In 2013, Canasil Resources Inc. completed a program of rock sampling and a lone drill hole, totalling 962.6 metres, on the Brenda property.
