The Patsy No. 2 prospect is situated on the east bank of Whistle (Sterling Creek), 6.8 kilometres west-southwest of Hedley.

The Whistle Creek area is underlain by andesite ash tuff, tuffaceous siltstone, argillite and minor limestone of the Late Triassic Whistle Creek Formation (Nicola Group). These beds strike 000 to 040 degrees, dip moderately to steeply to the east and are intruded by dykes, stocks and small irregular masses of diorite of the Early Jurassic Hedley Intrusions. A band of light-coloured calcareous and cherty sediments at least 60 metres thick, containing impure to pure limestone, chert and tuff, occurs within dark-coloured argillite at the Patsy No. 2 prospect.

Five subparallel shear zones occur conformably within Whistle Creek sediments over a stratigraphic thickness of 110 metres. The four lower zones are contained within the calcareous and cherty sediments, while a fifth zone is in overlying argillite along the footwall of a diorite sill. The zones strike north and dip 38 to 70 degrees east, generally following bedding of the hostrocks. Individual shear zones pinch and swell to widths of up to 3 metres and have been traced on surface along the east slope of Whistle Creek and in underground drifts for up to 100 metres. Trenching and underground development has traced the shear zones downdip for distances of up to 90 metres.

The five zones are variably mineralized with arsenopyrite, as bands, lenses and disseminations, and lesser amounts of pyrite as stringers and disseminations, in a gangue of quartz or calcite. Four samples of selected arsenopyrite from the Number 1 shear zone taken in the No. 1 drift assayed from 1.4 to 30.9 grams per tonne gold, while a 1.73-metre channel sample across the Number 2 shear zone assayed 5.5 grams per tonne gold (Minister of Mines Annual Report 1937, pages D6, D7). A 0.6-metre drill hole intersection of the Number 2 zone assayed 31.2 grams per tonne gold and 17 grams per tonne silver (Minister of Mines Annual Report 1934, pages D20, D21, Hole 5). Twenty-eight channel samples across the number 5 shear zone in the No. 5 drift gave a maximum value of 1.71 grams per tonne gold (Minister of Mines Annual Report 1937, page D7).

Siltstone and sandstone outcrops containing disseminated pyrite and local chalcopyrite occur just south of the old workings, in the vicinity of the confluence of Whistle and Pettigrew creeks (Assessment Report 11901).

This prospect has been explored as early as 1901. Between 1933 and 1935, the deposit was assessed by Canada Lode Gold Mines and Hedley Sterling Gold Mines with the development of four levels of underground workings between elevations of 762 and 826 metres above seal level, and 415 metres of underground diamond drilling in ten holes.