Located on the lower slopes of Mount McLeod above Tenquille Lake, the Seneca showing occurs within a region underlain by a northwesterly trending roof pendant of the Upper Triassic Cadwallader Group. The pendant is contained within intrusive rock, ranging from granite to granodiorite to quartz diorite, of the Jurassic to Tertiary Coast Plutonic Complex. In the vicinity of the showing, the Cadwallader Group is represented by a sequence of volcanic flows and pyroclastics, probably of andesitic composition, intruded by fine-grained mafic dykes and younger porphyry dykes.
Magnetite-garnet skarns in the volcanic rocks containing chalcopyrite, galena and sphalerite strike east and dip moderately to the north. Calcite-chlorite veins, up to 1.5 metres wide, are also east trending. Mineralization in the veins consists of chalcopyrite, pyrite, sphalerite and galena.
A samples taken in 1987, apparently of skarn mineralization, assayed 0.33 per cent copper and 6.4 grams per tonne silver; another sample grading 2.04 grams per tonne gold appears to have been collected from a vein (Assessment Report 17261).
The area has been explored since the 1920s. In 1952, National Consolidated Base Metals Company examined the area. In 1961, Phelps Dodge completed a program of geological mapping on the area as the Tenquille claims. In 1969, the area was examined as the D group. Some drilling and blasting were performed at this time. In 1982 and 1983, Tenquille Resources completed programs of ground geophysical surveys, prospecting, trenching and sampling on the area as HIAG claims. In 1987, Ajax Resources completed a program of rock and soil sampling, geological mapping and ground geophysical surveys on the area. In 1989 and 1990, New Camp Resources completed programs of rock, silt and soil sampling and ground geophysical surveys on the area as the Zul property. In 1990, Teck Corp. staked the Apollo, Sun and God claims of the Sungod property. In 2003, the area was staked as the Gold King property by J.T. Shearer. During 2004 through 2006, Goldking Mining Ltd. (later Wolverine Minerals Corp.) completed programs of rock and soil sampling, geological mapping and an induced polarization survey on the area.
