The Lalinear showing occurs in the contact area of Lower to Middle Jurassic Hazelton Group volcanics in the south, and Eocene Endako Group (formation? (Nechako Group)) in the north, consisting of andesitic volcanic rocks.

A feldspar porphyry is intermittently clay-altered, brecciated and carbonate and/or silica flooded along the west side of the valley wall for approximately 100 metres. Pyrite and chalcopyrite are sporadically present. Locally, quartz veinlets or silica banding occur and occasionally blue quartz was observed. A zone of fine-grained, silicified, pyritic rock was observed approximately 75 metres to the north of Cogema’s 0.82 gram per tonne gold location. An outcrop of monzonite was noted proximal to the pyrite zone, mineralization may be fault related, intrusive related, or both. A white, clay altered, brecciated feldspar phyric andesite, similar to that found to contain gold elsewhere, was found in talus from a recessive zone 50 metres to the west of and above the Lalinear valley, and was thought to possibly represent an extension to the known occurrence. In the Lalinear area is a broad north-easterly trending coincident arsenic-mercury soil anomaly in which there are local spot high gold values.

Five rock samples collected in 1995 by Phelps Dodge in contain anomalous values of gold, silver and copper. All anomalous samples are a grey to light green propylically altered feldspar phyric andesite breccia with quartz-carbonate infilling the breccia voids. The quartz-carbonate contains trace to 1 per cent disseminated fine grained pyrite, trace disseminated arsenopyrite and locally chalcopyrite. Gold values from these samples ranged from 0.076 to 0.3 gram per tonne gold, silver from trace to 2.4 grams per tonne silver and copper from trace to 0.51 per cent copper (Assessment Report 24305).

Refer to Stubb (093F 066) for common work history details.