The Mac 3 skarn occurrence is located at an elevation of approximately 1800 metres on a northwest-facing slope, approximately 2.5 kilometres west-northwest of Mount McNamara.

The area is situated within a Mesozoic volcanic arc assemblage that lies along the eastern margin of the Intermontane Belt, a northwest-trending belt of Paleozoic to Neogene sediments, volcanics and intrusions bounded to the east by the Omineca Belt and to the west and southwest by the Sustut and Bowser basins.

Devonian-Permian Asitka Group crystalline limestones are the oldest rocks exposed in the region. They are commonly in thrust contact with Upper Triassic Takla (Stuhini) Group andesite flows and pyroclastic rocks. Takla volcanics have been intruded by the Early Jurrasic granodiorite to quartz monzonite of the 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 4- to 5-metre wide garnet-diopside-magnetite-chalcopyrite skarn zone hosted in calcareous rocks near the contact of marine sediments and volcanics. The skarn zone has been traced for over 400 metres along strike.

In 2004, numerous float samples (192644 through 192649) of amethyst-quartz vein stockworks hosting pyrite-chalcopyrite-pyrrhotite from an occurrence area yielded values of up to 2.30 grams per tonne gold, 10.4 grams per tonne silver and greater than 1.00 per cent copper (Assessment Report 27633).

In 2005, channel samples (64603 to 64605) from the skarn zone averaged 0.76 per cent copper and 23.6 grams per tonne silver over 4.0 metres, including 1.22 per cent copper and 40.2 grams per tonne silver over 1.5 metres, whereas a chip sample (64601) over 0.70 metre of a chalcopyrite-rich vein/replacement, located approximately 400 metres to the southwest and in the same stratigraphic level as the previous samples, yielded 12.9 grams per tonne silver and 0.870 per cent copper (Assessment Report 28041). A grab sample (64606) of quartz-veined andesite from the skarn zone assayed 0.220 gram per tonne gold and 39.1 grams per tonne silver (Assessment Report 28041).

Also at this time, a grab sample (64607) of sedimentary rock with chalcopyrite-pyrite, located approximately 450 metres to the northeast, yielded 1.02 grams per tonne gold, whereas a sample (64234) from a 6-centimetre wide quartz vein with disseminated pyrite and magnetite, located approximately 700 metres to the west, assayed 0.475 gram per tonne gold, 4.7 grams per tonne silver and 0.413 per cent copper (Assessment Report 28041).

Work History

In 1981 and 1982, Golden Rule Resources Ltd. completed programs of geological mapping and geochemical (rock, silt and soil) sampling on the area as the QBX 1-12 claims.

In 1984, Newmont Exploration of Canada Ltd. completed a program of geological mapping, geochemical (rock, silt and soil) sampling and ground magnetic and electromagnetic surveys on the area as the Lynx 1-7 claims.

In 1986, Toodoggone Gold Inc. completed a 278 line-kilometre airborne electromagnetic and magnetic survey on the area as the Fisher 1-2 and Wolverine 1-2 claims.

During 2004 through 2006, Stealth Minerals Limited completed exploration programs of soil and rock geochemical sampling, prospecting and geological mapping on the Mac 1-9 claims as a part of its Toodoggone project.

In 2017, Sable Resources Ltd. completed a helicopter-borne geophysical survey over the Bot property thatincluded radiometric, magnetic and ZTEM data.

In 2018, Talisker Resources Ltd. conducted prospecting of geophysical anomalies (identified in the 2017 survey) located on the northern half of the Bot property. A total of 148 rock, silt and talus samples were collected and submitted for assay.