The Sam gold-anomaly is located on the south side of Downton Creek, at approximately 1400 metres in elevation.

The region is underlain by the Mississippian to Jurassic Bridge River Complex (Group), which are exposed along a broad, complex antiformal structure that plunges northwest. The group consists mainly of a thick sequence of bedded chert, chert argillite and argillite intercalated with altered basaltic flows (greenstone) and minor limestone. The greenstone is altered to listwanite (quartz-carbonate alteration) and flooded by pyrite. Most of the Bridge River Group exhibits pumpellyite-prehnite metamorphic grade.

Locally, areas of quartz veining, varying in widths from 1 to 3 metres across, with carbonate-hematite-sericite alteration and pyrite mineralization are hosted by listwanite altered greenstones. In 2000, soil sampling yielded values up to 2.14 grams per tonne gold (Sample S99+2; Assessment Report 26087).

Approximately 400 metres to the east, areas of quartz veining with carbonate alteration, varying in widths from 1 to 3 metres across, are hosted by a listwanite altered greenstones dike. The dike is approximately 20 metre wide and strikes 120 degrees with a vertical dip. Pyrite, pyrrhotite and chalcopyrite mineralization occurs in cross fractures up to 15 centimetres wide.

Another area of mineralization, located approximately 100 metres down slope and to the north west of the previous area, hosts a banded quartz vein, 0.25 metre wide and striking 340 degrees with a dip of 65 degrees. Mineralization consists of pyrite with sericite-hematite alteration.

Rhodonite float is also noted to occur in Downton Creek to the northeast. The rhodonite varies from a light pink to a redish colour with yellow, brown to black oxidation in a dark brown altered greenstone (Assessment Report 26087).

In 2000, the area was staked and prospected by R. Polischuk. Previous exploration in the area has been centered on the nearby Raven (MINFILE 092JNE056) occurrence to the north of Downton Creek.