The area of the Wildhorse North showing is underlain by Middle Cambrian to Upper Cambrian limestone, marble and calcareous sedimentary rocks of the Lyell, Sullivan, or Jubilee formations. These sediments are intruded by a Cretaceous stock (and as sills and dikes) consisting of granite, granodiorite, and monzonite.

Chalcopyrite, hematite, and pyrite are disseminated in carbonate-altered syenite. Sample DD07-27 graded 0.08 per cent copper (Assessment Report 29942). Samples of massive veins (Samples DD07-11, 12, 13), taken 300 metres south-southwest of sample DD07-27, were high in copper, zinc, and lead. Sample DD07-11 assayed over 1 per cent copper, over 1 per cent zinc, and 0.7 percent lead (Assessment Report 29942).

In 2007, Ruby Red Resources Inc. collected 364 soil and 72 rock samples about 1.5 kilometres (and further) to the northeast from the April showing (082GNW049), revealing new copper, lead, zinc, and silver mineralization on their Do Drop property (see Wild Horse, 082GNW116 and East Ridge 082GNW117) (Assessment Report 29942). In 2008, Ruby Red completed work on their Do Drop/Wild Horse property on or near the Hot 1 (082GNW050) showing area. Work consisted of the collection of 445 soil samples and was conducted in the area of the new showings previously found in 2007 and over the Hot 1 showing (Assessment Report 30642).

Refer to April (082GNW049) and Hot 1 (082GNW050) for related information.