The Seward property is on the southerly slope of Willowbank Mountain, 6 kilometres east of the Columbia River and about 20 kilometres north of Golden. Several mineralized showings occur in the vicinity of Polecabin Creek: the first at creek level, the second at a point about 2.8 kilometres northwest of the creek level showing on a ridge on the southwest side of Polecabin Creek, and a third location at a point opposite the second showing on the northeast side of Polecabin creek.

The area is underlain by Cambrian to Devonian massive blue limestone which overlie thin-bedded shales. The showings comprise intersecting veins and veinlets of quartz-calcite hosted in limestone. Veins vary from 5 centimetres to 1.2 metres wide, are occasionally "copper stained" (malachite?) and are mineralized with galena and minor amounts of tetrahedrite. A sample of quartz with copper stain and some tetrahedrite analysed 342.8 grams per tonne silver, 1.5 per cent lead and 1.5 per cent copper (Minister of Mines Annual Report 1935, page E25).