The Tri Lakes property was found to be underlain mainly by argillite/siltstone and greywacke/sandstone with minor lenses of conglomerate. All of these units were believed by explorations in 1990 to belong to the Middle Jurassic Salmon River Formation (Hazelton Group) but the most recent compilation shows the area to be (in general) underlain by the Middle to Upper Jurassic Bowser Lake Group (Open File 2005-5).

The 1990 exploration program by Canadian Eagle Exploration Ltd on the Tri Lakes project consisted of reconnaissance geological mapping and prospecting in conjunction with the collection of 23 rock, 334 soil, and 20 stream sediment samples for geochemical analysis.

Areas of blow-out quartz veining were found throughout the property. The veins are milky white coloured bull quartz, ranging in width from a few millimetres to 3 metres. This system occurs in a zone that is 25 to 75 metres wide and 400 metres long. Very minor limonite staining with rare specks of pyrite and one small speck of malachite were observed.

Gold results from the initial samples are low with the exception of soil samples on one contour line. Assays ranged from 20 to 85 parts per billion over a 300 metres distance along the line (Assessment Report 21175). Limited follow up consisting of mapping and additional contour soil sampling in the area of the anomalous soils was carried out. The mapping did not reveal any obvious source for the anomalies and results from the additional contour soil lines above and below the anomalous area were low.