The Len (P1) occurrence is located at an elevation of approximately 1780 metres on a steep south-facing slope, northwest of Poutang Creek and approximately 3.5 kilometres southwest of the creek's junction with Guilbault Creek.

Regionally, the area is underlain by dolomitic carbonate rocks of the lower Silurian Nonda Formation, upper Silurian to Middle Devonian Muncho-McConnell Formation, Lower to Middle Devonian Stone Formation and Dunedin Formation, overlain by shales of the Upper Devonian to Mississippian Besa River Formation. These units lie on the northeast flank and core of the Bernard anticline, a prominent north-trending structure. The north end of the Bernard anticline terminates in a small dome overlain by upper Silurian and Lower Devonian strata.

Locally, minor lead-zinc mineralization in the form of galena, oxidized sphalerite and limonite occurring within a brecciated reefoid dolostone of the upper Silurian to Middle Devonian Muncho-McConnell Formation. The mineralized zone, referred to as the P1 zone, is exposed over a width of approximately 2.4 metres and for a length of 12 metres. Another zone of minor mineralization, referred to as the P2 zone, is reported upslope of the previous zone and comprises scattered oxidized sphalerite occurring over an area of approximately 12 by 12 metres.

Work History

In 1972, Bow River Resources and Northair Mines completed a program of geological mapping and geochemical sampling on the area as the Len and Oak claims. A sample from the P1 zone yielded 1.82 per cent lead and 2.48 per cent zinc (Property File - L.W. Saleken [1972-11-01]: Report on the Len-Oak Claims).