The area is underlain by Devonian rocks of the Eagle Bay Formation comprised of metavolcanics and arenaceous sediments. The units are metamorphosed to greenschist facies, forming quartz- chlorite-sericite schists and quartzites.

Two semi-massive sulphide horizons, 35 metres apart are composed of granular pyrite in a matrix of chlorite and quartz with minor sphalerite, galena, chalcopyrite and pyrrhotite. The upper horizon, about 900 metres long and 3 to 10 metres wide, trends 50 degrees and dips about 30 degrees to the west. A drill hole intersected the zone and assayed 0.03 per cent copper, 0.02 per cent lead, 0.10 per cent zinc and 2.38 grams per tonne silver over 24.8 metres. A drill hole 220 metres to the southwest assayed 0.13 per cent copper, 0.015 per cent lead, 0.086 per cent zinc and 5.00 grams per tonne silver over 16.1 metres (Assessment Report 12904).

New Global Resources mapped and sampled the Birch property from 1988 to 1990; they drilled 9 holes (309.5 metres) in 1991. Gemstar Resources optioned the claims in 1991; ownership was Foundation Resources Ltd. in 1995. In 1997, Homegold Resources Ltd. prospected on the Birch property.