Connaught, YT


  • 100%-owned 137.3 km2 road accessible property, located 65 km west of Dawson City, in the headwaters of the Sixtymile placer gold camp.
  • 26 distinct silver-lead-zinc-gold-copper veins identified to-date over 13 km strike length and 400 m vertical extent in topography.
    • Only 3.5% or 590 m of the known strike length of veins has been coarsely drilled near surface.
  • Compelling early-stage copper-molybdenum-gold porphyry potential in the eastern portion of the property, underlain by the Prospector Mountain Suite intrusive rocks.
    • Porphyry potential has never been systematically evaluated, and will be a priority in 2021 and future seasons.
  • Rock samples grade up to 4,050 g/t silver, 79.41% lead, 10.90 g/t gold, 7.24% zinc and 1.98% copper.

Highlight Diamond Drill Results

Vein Hole From (m) To (m) Interval (m) Silver (g/t) Lead (%) Gold (g/t)
No. 1 69-1-106* 40.29 41.39 1.10 998 26.50 2.74
No. 3 CN-07-007 28.94 30.37 1.43 535 4.78 0.65
No. 4 CN-07-003 76.05 79.85 3.80 339 6.65 0.26
No. 4 R-88-005* 9.44 10.66 1.22 1,301 2.38 0.72
No. 4 R-88-006* 29.87 33.53 3.66 591 1.56 0.85
No. 9 DDH-03-004* 36.81 37.94 1.131,207 13.24 0.74
Intersected widths are estimated to be 70-90% of true widths. *Historic diamond drill holes have not been independently verified.

Connaught Geology

The Connaught project lies within the northeast-trending 150 km long Sixtymile-Pika fault system which controlled Late Cretaceous magmatism, hydrothermal activity and associated porphyry, skarn and epithermal mineralization in Yukon and Alaska. It is underlain by Yukon-Tanana Terrane, composed of continental margin sediments, island arc volcanics and coeval intrusions, which were metamorphosed and deformed during accretion to the North American continent during Mesozoic times. In the Sixtymile district, the Yukon-Tanana Terrane is subdivided into two stratigraphic elements (the Nasina and Klondike Schist Assemblages) and a metaplutonic package (the South Fiftymile Batholith). The Yukon-Tanana units are intruded by undeformed, Late Cretaceous plugs and stocks, including the Prospector Mountain Suite. The geology in the vicinity of the Connaught project can be divided into two main domains. The southern domain is underlain by the South Fiftymile Batholith while the northern domain contains supracrustal rocks of the Nasina and Klondike Schist Assemblages.

Vein Mineralization

The Connaught project has mostly been explored as a high-grade silver-lead-zinc-copper-gold vein prospect modelled after the highly productive mines in the Keno Hill district, located about 250 km to the east. Known vein zones are hosted by dilatent fault structures up to several metres in thickness. Individual veins have been traced for lengths in excess of 260 m and most are open in both directions along strike and to depth. Typical vein exposures consist of multiphase quartz that is variable mineralized with blebby to massive arsenopyrite+galena ± chalcopyrite ± covellite ± stibnite ± sulphosalts. Massive galena ± anglesite lenses are intermittently exposed in the core of some veins. The galena is usually coarsely cubic and contains scattered blebs of chalcopyrite. Anglesite weathered surfaces often exhibit botryoidal textures and some show shear textures. The veins and their selvages are usually light coloured compared to the surrounding units and are often tinted green, because of oxidization of arsenopyrite to scorodite and sericitization of mafic minerals. Bleached phyllic- and argillic-altered halos extend up to six metres into adjacent wallrocks. Gold is present in all of the veins but much of the historic work did not systematically evaluate it.

Porphyry Mineralization Potential

The Prospector Mountain Suite rocks are locally associated with significant copper and molybdenum soil anomalies and are part of a localized magnetic high. The rocks, soil geochemistry and geophysical signature display remarkable similarities to the nearby Taurus copper-molybdenum-gold porphyry deposit in Alaska. Porphyry potential has been identified by multiple previous operators, however highly fragmented land ownership has hindered systematic exploration. ATAC consolidated the majority of the potential porphyry area in November 2020.