The American Wonder occurrence is located on the north side of Elsul Creek, a tributary of Tranquil Creek, at an elevation of approximately 600 metres.

Diorite to granodiorite of the Early to Middle Jurassic Island Plutonic Suite or the Paleozoic and/or Mesozoic Westcoast Complex intrude calcareous sediments and limestone which are correlative with rocks of the Upper Pennsylvanian to Lower Permian Buttle Lake Group.

The deposit is a garnet-epidote skarn between a limestone and a granodiorite intrusion. The contact trends approximately northwest- southeast with the intrusive to the south and the limestone to the north. Associated with the limestone are thin layers of argillite and/or volcanics.

Lens shaped bodies of disseminated magnetite, chalcopyrite, pyrrhotite and pyrite, with garnet and epidote are reported to occur within limestone. Individual lenses have been exposed for 15 to 23 metres along strike. The width of the lenses and the total length of mineralization are not known.

A grab sample from a dump assayed 8.6 per cent copper, 61.7 grams per tonne silver and 16.2 per cent iron (Minister of Mines Annual Report, 1916-331).

In 1985 and 1987, West-Mar Resources Ltd. completed programs of rock, silt and soil sampling on the area. In 1991, the area was prospected by K.E. Hicks.