The Pil occurrence is located on the east side of Jock Creek, 5.5 kilometres west of The Pillar and south of the Toodoggone River. Smithers is 280 kilometres to the south.

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, an elliptical, granite to quartz monzonite stock approximately 2.5 kilometres long (north-south) by 1.25 kilometres wide intrudes andesite flows and pyroclastics, mainly tuffs, and minor argillite of the Hazelton Group. The Hazelton Group is also intruded by quartz feldspar porphyry dikes and is undifferentiated on a regional scale at this location.

The volcanic rocks are highly fractured, altered and impregnated with pyrite near the contacts of the intrusion. Alteration of the granite consists of chlorite and sericite developed locally, and intense fracturing is generally absent. Mineralization consists of local disseminations of chalcopyrite within altered portions of the granite intrusion.

In 1969, the grade of mineralization was visually estimated to be less than 0.1 per cent copper, and a grab sample of similarly mineralized quartz feldspar porphyry assayed 0.03 per cent copper (Assessment Report 1888).

In 2004, two grab samples (151848 and 151850) of siliceous, chlorite-epidote–altered diorite, taken a short distance east, assayed 200.0 grams per tonne silver each (Assessment Report 27634).

Work History

In 1969, Cominco Ltd. completed a program of prospecting, sampling and geological mapping on the area as the Pil 1-12 claims.

In 2003 and 2004, Stealth Minerals Ltd. completed programs of prospecting; geological mapping and rock, silt and soil sampling on the area as the Nub claims.

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 the Joy property.