The JC 7-8 occurrence is located on a south-southeast–facing slope, northwest of Jock Creek and approximately 2 kilometres north-northeast of The Pillar.
Regionally, the area is situated within a Mesozoic volcanic arc assemblage, which lies along the eastern margin of the Intermontane Belt, a northwest-trending belt of Paleozoic to Paleogene 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 Stuhini Group andesite flows and pyroclastic rocks, and marine sedimentary and volcanic rocks of the Lower to Middle Jurassic Hazelton Group. These 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.
Locally, a silicified andesite near its contact with a monzonite hosts quartz veins with pyrite and malachite staining.
In 2004, two grab samples of outcrop (148281 and 185798) yielded up to 1.86 grams per tonne gold, 6.1 grams per tonne silver, 0.221 per cent copper, 0.516 per cent lead and 0.347 per cent zinc (Assessment Report 27790).
Work History
During 2003 through 2006, Stealth Minerals Ltd. completed programs of prospecting; geological mapping and rock, silt and soil sampling on the area as the JC claims of the Sickle-Sophia, Nub and Bee Gee properties.
In 2015, Serengeti Resources Inc. completed a historical review of geophysical and geochemical data on the area as the Nub N1 claim. In 2017, Serengeti Resources conducted a 95.0 line-kilometre airborne magnetic survey on the Nub Mountain property.
During 2016 through 2018, Amarc Resources Ltd. completed programs of soil and rock sampling, geological mapping, 115.0 line-kilometres of ground induced polarization surveying and 1940.0 line-kilometres of airborne magnetic surveying on the area as part of the Joy property.