The Peggy showing is located on the abandoned grade of the Great Northern Railway about 3.2 kilometres south of Wynndel in the Purcell Trench. Two opencuts in 1929 exposed a quartz vein striking 010 degrees and dipping 80 degrees west, hosted in mica schist that is mapped as part of the Middle Aldridge Formation (Purcell Supergroup of Middle Proterozoic age: Brown et al., Fieldwork 1994).

The vein varies in width from 0.3 to 1.2 metres and contains minor amounts of galena and sphalerite with associated silver and gold values. A sample of selected sulphides from the north opencut assayed 3.25 per cent lead, 0.4 per cent zinc, 10.3 grams per tonne silver and 0.7 gram per tonne gold (Minister of Mines Annual Report 1930).