The showings are located 1.2 kilometres north of North Creek, on the east shore of Duncan Lake, in the Slocan Mining Division.

Regionally, the area lies within the Kootenay Arc near the margins of the Ancestral North American Terrane. The Kootenay Arc is a curving belt of highly deformed metasedimentary and metavolcanic rocks which includes the Upper Proterozoic Horsethief Creek Group, the Eocambrian Hamill Group, the Lower Cambrian Badshot Formation and the lower Paleozoic Lardeau Group. The volcano-sedimentary sequence is intruded by numerous Ordovician, Devonian and Mississippian granitoid plutons. The rocks have undergone regional metamorphism to middle or upper greenschist facies (Paper 1993-1).

The talc occurs on the eastern limb of the Howser syncline, within the Index Formation of the Lardeau Group. The rocks are mostly schists (chlorite-muscovite, biotite-muscovite, chlorite-feldspar), and micaceous quartzite. A band of northwest trending Badshot-Mohican Formation marble, phyllite and muscovite quartz schist separates the Lardeau Group from Lower Cambrian Hamill Group slates, phyllites and quartzite (Open File 1988-19).

On the Duncan Lake property, two talc zones exposed on the logging road, both approximately 5.0 metres wide, occur in a mica schist striking northwest and dipping 65 to 70 degrees east. The talc is reported to be hydrothermally leached and contaminated with 5.0 per cent iron and quartz? fragments.

A magnetometer survey identified three talc zones just above the road showings in an open clearing. The zones are approximately 10 metres thick and range from 20 to 70 metres in length. The length of the zones has not been determined. The talc bodies are found both crosscutting and parallel to bedding.

The talc has been collected by locals for carving, but apparently it is of inferior quality and has not been worked for several years (G. Addie, personal communication, 1987).

Work in 1993 outlined an area of 3 kilometres strike length where industrial quality talc occurs in vertically dipping bands 6 to 45 metres wide. Within the talcose bands, talc content ranges from 52 to 75 per cent. Preliminary metallurgical flotation tests confirmed that a 95 per cent talc concentrate can be produced with a simple process on the talcose material. Recovery was 59.24 per cent and a byproduct grading 67 per cent magnesite and 32 per cent talc was also produced (Assessment Report 23285).