The Tri 12-13 (Colledge Creek) occurrence is located north of Colledge Creek and approximately 5.5 kilometres west of Canswick 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, at the main (TRI 12-13) zone, mineralization comprises disseminated galena and sphalerite within a barite-calcite–healed breccia hosted within Dunedin Formation limestone. The 2-metre wide zone can be traced for 9-metres along strike. In 1973, samples from this zone yielded up to 13.6 per cent zinc and 2.2 per cent lead (Assessment Report 4692).

A second zone of mineralization (TRI 14), exposed by a trench approximately 150 metres to the east of the previous zone, comprises 1 metre of disseminated chalcocite and malachite in highly silicified limestone. Minor sphalerite is also reported. In 1973, surface samples from this zone yielded up to 0.40 per cent copper and 0.16 per cent zinc (Assessment Report 4692). In 1974 samples from the trench graded 0.75 and 0.45 per cent copper (Assessment Report 5823).

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.