It is not possible to be sure of the location of the Sarah showing; it is described as being "situated on the west side of Prospect Creek, which flows into the Goat River about 5 kilometres north of Duck Creek Station; the property is reached by a trail about 1.6 kilometres in length from the Canadian Pacific Railway tracks at an elevation of 1000 metres, or 400 metres above the tracks" (Minister of Mines Annual Report 1924). Neither Prospect Creek nor Duck Creek Station occur on the existing topographic maps near the location shown on the NTS map sheet 82F/SE. The plotted location of this showing (if correct, which does not seem likely) is in the same area as a lead-zinc geochemical anomaly on the Elk claims (Assessment Report 20060 on work done in 1989, which found the anomalous values to be associated with an area of altered sediments).

The Sarah showing is hosted in sedimentary rocks of the Aldridge Formation, part of the Purcell Supergroup of Middle Proterozoic age. In the property area, the hostrocks consist of quartzites, limestones, and siliceous and calcareous schists which have a northeasterly trend up the steep mountainside, with dips varying from 80 degrees to the east to nearly vertical. A wide band (about 20 metres wide) of shattered limestone contains replacement lenses, stringers and disseminations of sphalerite, pyrite and galena. This band has been traced for about 100 metres southwesterly from the Sarah tunnel. Assays range up to 32 per cent zinc and 100 grams per tonne silver (Minister of Mines Annual Report 1924).

During 2004 through 2012, Eagle Plains Resources Ltd. completed programs of geological mapping, geochemical (soil and rock) sampling and airborne geophysical surveys on the area as apart of the Iron Range property. A completed property exploration history can be found at the O-Ray (MINFILE 082FSE017) occurrence.