The Jan 5 occurrence is located on a northeast-trending ridge at an elevation of approximately 1600 metres and approximately 5.8 kilometres northeast of Drybrough Peak.
The area is at the southern end of the Toodoggone gold camp, which lies within the eastern margin of the Intermontane Belt and is underlain by a northwest-trending belt of Paleozoic to Neogene sediments, volcanics and intrusions. The area is situated within a Mesozoic volcanic arc assemblage 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 calc-alkaline volcanics of the Toodoggone Formation (Hazelton Group).
The dominant structures in the area are steeply dipping faults that 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 occurrence area is underlain by volcanics of the Toodoggone Formation consisting of predominantly hornblende-plagioclase and plagioclase phyric andesite porphyry flows, tuffs and breccias with lesser lahar, conglomerate, greywacke, siltstone and rare rhyolite. A major fault structure is associated with the occurrence. Outcrops along this fault structure consist of quartz breccia and veining with hematite-coated fractures, silicification and up to 1 per cent disseminated pyrite.
In 1986, a sample (1370) assayed 332.0 grams per tonne silver, 0.129 per cent copper, 2.233 per cent lead and 4.331 per cent zinc, whereas another sample, taken approximately 500 metres along strike to the southeast, yielded 1.95 grams per tonne gold and 9.9 grams per tonne silver (Assessment Report 15555).
Another zone of quartz breccia, up to 30 metres in width, is reported approximately 900 metres to the southwest of the previous zone.
Work History
In 1982 and 1983, Golden Rule Resources Ltd. completed programs of prospecting, geological mapping, geochemical (rock, silt and soil) sampling and airborne geophysical surveying on the area as the Jock 1-5 claims. In 1985, a further program of prospecting, geological mapping and rock sampling was completed on the Jock claims.
In 1986, Canasil Resources Inc. completed a program of geological mapping, geochemical (rock, silt and soil) sampling and a ground resistivity survey on the area as the Brenda and Jan claims. In 1988, a further program of rock and soil sampling, geological mapping and ground geophysical surveys were completed on the area. During 1989 through 1993, programs of trenching and soil and rock sampling were completed on the area. 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. High-resolution airborne magnetic, radiometric and satellite imaging surveys were completed 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. In 2004, a further five diamond drill holes, totalling 1445.7 metres, were completed. After review of the 2004 data, Northgate returned the property to the vendor.
In 2007, Canasil Resources conducted a 32.2 line-kilometre 3-D induced polarization survey and five boreholes, totalling 1708 metres, centred over the White Pass (MINFILE 094E 147) zone area.
In 2013, Canasil Resources Inc. completed a program of rock sampling and a lone drillhole, totalling 962.6 metres, on the Brenda property.
