The Jay prospect is located 5 kilometres south-southwest of the summit of Mount Wallace and 5.75 kilometres south of Beaverdell, British Columbia (Assessment Report 16772).

Initial prospecting began in the Beaverdell area in the late 1880s. The first ore was shipped in 1896. The major producing mines in the Beaverdell silver-lead-zinc vein camp, from west to east, were the Wellington (082ESW072), Sally and Rob Roy (082ESW073), Beaver (082ESW040), and Bell (082ESW030), with numerous other small workings throughout the area. The Jay prospect was discovered in 1982 during an exploration program by Canstat Petroleum Corp. Follow-up exploration was carried out in 1983.

Granodiorite of the Westkettle batholith underlies most of the area. It has been intruded by small quartz monzonite porphyry stocks including the Eocene Beaverdell, Tuzo Creek, Eugene Creek and Carmi stocks. Other granitic porphyry stocks that intrude the Westkettle batholith are the Eocene Beaverdell porphyry. The Westkettle batholith has been correlated with the Nelson intrusions that have been dated by potassium-argon and uranium-lead methods as Middle Jurassic. The Westkettle batholith contains remnants of pendants and/or screens of metamorphosed Wallace Formation. The Wallace Formation is believed to be correlative with the upper (Permian) section of the Carboniferous to Permian Anarchist Group. Lithologies include metamorphosed andesitic tuffs and lavas, hornblende diorite porphyries, olivine gabbro and hornblendite, hornfels and minor limestone. The contact between the Wallace Formation and the Westkettle batholith is sinuous, trending north with gentle east dips. These are unconformably overlain by Oligocene tuffs and conglomerates and Miocene plateau basalts. Westkettle granodiorite or Beaverdell quartz monzonite are the dominant hostrocks. Mineralization rarely extends into the Wallace Formation to the east. A series of dikes, ranging in composition from quartz latite and quartz monzonite porphyries to hornblende andesite porphyries, are found throughout the area. In the Beaverdell camp, fine-grained, brown andesite dikes, referred to as Wellington-type dikes, are believed to be pre-mineralization. Quartz latite dikes are referred to as Idaho-type dikes and thought to be syn or post-mineralization.

Beaverdell silver-rich veins are found in a 3.0 by 0.8 kilometre belt, referred to as the Beaverdell silver-lead-zinc vein camp. The mineralized veins are fissure-hosted, formed along east-trending faults in the west portion of the Beaverdell camp, and northeast- trending faults in the east portion of the camp. Faults have been classified into five types based on their orientation, with each type having common orientation, kind of movement and age relationship. The northeast-striking, high-angle normal faults pose the greatest obstacle to systematic exploration and mining, as these faults are commonly spaced a few metres apart dividing veins into short segments in a northwest-downward direction.

Vein-type mineralization of the Beaverdell camp is characterized by a high silver content. Mineralization is composed of galena, sphalerite and pyrite with lesser amounts of arsenopyrite, tetrahedrite, pyrargyrite, chalcopyrite, polybasite, acanthite, native silver and pyrrhotite. The gangue minerals in veins are mainly quartz with lesser amounts of calcite, fluorite and sericite with rare barite.

The Jay is located 1 kilometre south of the Fran occurrence (082ESW071) and is underlain by Westkettle granodiorite close to the contact with Permian Wallace Formation metamorphosed volcanic rocks. A gradational zone where the granodiorite assimilated some of the Wallace Formation rocks has resulted in a microdiorite unit. Some hornfels and younger hornblende porphyry dikes also occur. Chloritic, propylitic (epidote) and siliceous alteration is common throughout the granodiorite with potassic (potassium feldspar) alteration weakly distributed. Predominant calcite stringers with minor quartz occur throughout the microdiorite unit.

In 1983, three diamond-drill holes were drilled to test a shear zone thought to be controlling disseminated pyrite and chalcopyrite mineralization discovered in Trench 12. Trench 12 cut the eastern edge of the Wombat-Babe copper soil geochemical anomaly. The trench exposed a malachite stained quartz pod grading into a siliceous zone trending east. Blebs of pyrite and chalcopyrite comprise mineralization. Drillholes 5 and 6 intersected a few narrow zones of microdiorite with chlorite, epidote alteration and silicification throughout. Chalcopyrite and pyrite occur as disseminations and hairline stringers throughout the granodiorite and increases slightly in the microdiorite. Some pyritic siliceous zones with calcite stringers and epidote are also evident. Hematite occurs as an oxidation product along fractures in faults. One of the better silver intersections was from the 0.61-metre interval between 6.84 and 7.45 metres in drillhole DM83-5. This sample (95277) yielded 5.5 grams per tonne silver and 0.03 per cent copper (Assessment Report 12734). Sample 83418 yielded 2.1 grams per tonne silver and 0.31 per cent copper over the 1-metre interval between 31.5 and 32.5 metres in drillhole DM83-5 (Assessment Report 12734).