The TWINS occurrence is located in the Omineca Mountains, on the east side of Canyon Creek, approximately 13 kilometres northeast of the north end of Thutade Lake, 5 kilometres east of the Finlay River and 112 kilometres west-northwest of Tsay Keh Dene at the north end of Williston Lake.

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 Takla 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).

At Twins, massive to lapilli bearing, feldspar-biotite-hornblende(+/-quartz) phyric andesite-dacite ash flow tuff and local bedded ash fall tuff (Saunders Member, Lower Toodoggone Formation) dip gently the westward and are cut by crowded feldspar-biotite-hornblende porphyry intrusions (Early Jurassic Black Lake Suite). Outcrops in the Twins canyon host potassic alteration associated with quartz-magnetite-sulphide veinlets and disseminations (1-3 per cent total sulphide - pyrite±chalcopyrite – and 1-3 per cent magnetite).

The Twins is a large chargeability anomaly within the Joy Project area that was initially drilled in 2021. Hole JP21004 returned values of 0.09 per cent copper, 0.15 gram per tonne gold and 0.5 gram per tonne silver over 63 metres, including 39 metres of 0.11 per cent copper, 0.19 gram per tonne gold and 0.6 gram per tonne silver (Assessment Report 40024). Drilling in 2022 tested magnetic highs within the Twins chargeability anomaly, intersecting a broad geochemically anomalous area. Hole JP22020 intersected 204 metres grading 0.03 per cent copper, 0.14 gram per tonne gold and 0.4 gram per tonne silver (Assessment Report 40024).

In 2024, drill hole JP24051 intersected 96 metres grading 0.09 per cent copper, 0.27 gram per tonne gold and 0.5 gram per tonne silver and a second 124 metre interval of 0.13 per cent copper, 0.35 gram per tonne gold and 0.6 gram per tonne silver (Press Release-Amarc Resources Ltd., Feb. 28, 2025).

Work History

Amarc Resources Ltd. consolidated the Joy Project mineral tenure through a series of agreements concluded between 2017 and 2019. In 2019, Amarc gained a one-hundred per cent interest in the Pine property under agreements with Gold Fields and previously Cascadero (Press Release, Amarc Resources Ltd., Dec 19. 2019).

From 2016 to 2024, Amarc completed exploration programs of historical core logging at Pine, Mex (094E 057) and Fin (094E 312), induced polarization and airborne magnetic surveys, prospecting, mapping, geochemical soil and rock sampling and diamond drilling. In 2021, 4322 metres of NQ and HQ diamond drilling were completed in 9 holes. Four holes (2,299 metres) were drilled at the Pine deposit, two on the Mex trend (1,111 metres), two at the Canyon zone (620 metres) and one (302 metres) in the Twins area (Assessment Report 40024).

In 2022, drilling at the Joy Project totaled 15,427 metres in 37 drill holes at Pine, Canyon, South Mex, SWT, Wrich, North Finlay, South Finlay and CT geophysical targets (Press Release Amarc Resources Mar. 2, 2023), including drilling of 7 holes totaling 1,656 metres in the Twins target area. The 2023 exploration program had the goal of identifying and refining porphyry copper-gold deposit targets occurring in several previously identified target areas across the JOY project (Assessment Report 41856).

The Twins prospect is within the Joy Project area (2025). See the Pine deposit (094E016) for a more comprehensive documentation of exploration and geology.