The TRI 15 occurrence is located on an east-west–trending ridge separating Colledge and Nordling creeks, approximately 1.6 kilometres north-northeast of the east end of Colledge Lake.

Regionally, the area is underlain by a conformable package of Silurian Nonda Formation, Lower Devonian Muncho-McConnell Formation and Lower to Middle Devonian Stone Formation strata. To the east, this package is thrust over Middle Devonian Dunedin Formation carbonates and Stone Formation dolostone. These, in turn, are overthrust onto Devonian to Carboniferous Besa River shales.

Locally, a subconformable vein or horizon of massive barite, 0.3 to 0.6 metre in width, in crystalline limestone hosts sphalerite and galena concentrated at the bottom of the vein and impregnated along the footwall.

In 1973, a sample from this zone is reported to have assayed 1.4 per cent lead and 1.2 per cent zinc (Assessment Report 4692).

In 1974, six grab (float/talus?) samples (F-171 through F-175 and U-15) from the occurrence area yielded values from 0.50 to 13.13 per cent zinc and 0.50 to 0.80 per cent lead, whereas another sample (U-18) yielded 1.90 per cent copper (Assessment Report 5407).

Work History

During 1973 through 1975, Aquitane Company of Canada Ltd. completed programs of prospecting, geological mapping, geochemical (silt and soil) sampling and minor trenching on the area as the TRI, IRA, KEY, MEG and QYR claims.