The Shore zone area is underlain by rocks of the Lower-Middle Jurassic Unuk River Formation, Hazelton Group. These rocks consist of sandstone, wackes and shale overlain by lapilli tuff of andesitic composition. The Brucejack fault and associated splay faults cut the country rock in a north to northwest direction. North of Brucejack Lake the fault system is bounded on the east by rocks of the Betty Creek Formation, Hazelton Group. A variety of Jurassic hornblende syenites and alkali feldspar syenites occur in the area.

The Shore (Sulphurets) zone is an epithermal-type quartz vein system occurring along the north shore of Brucejack Lake (onshore and offshore). Rocks associated with the zone include arkose, hornblende syenite, andesitic tuff and tuff breccia. Mineralization appears to occur within trachyandesite near a volcanic/sedimentary contact (as in the nearby West zone, 104B 193). The zone, characterized by intense quartz-carbonate-sericite-pyrite alteration, occurs along a fault zone that marks the axis of an anticlinal structure. The Shore zone is a 500 metre long, 50 metre wide zone of quartz stockwork and stacked, subparallel quartz veins trending northwest and dipping steeply to the northeast. The veins dip underneath Brucejack Lake and remain open at depth in some areas.

The vein system varies from a quartz vein to a quartz stockwork, to a single 1 to 2 centimetre thick quartz-electrum vein. Pyrite, sphalerite, tetrahedrite, galena and chalcopyrite occur as traces or combined may form up to 20 per cent of the vein. Large masses of calcite occur as later fracture fillings. Pearceite, acanthite, proustite and barite are also reported.

Several discrete quartz vein and stockwork structures were mapped along strike (Camino Real zone) to the northwest of the Shore zone. The continuity of these structures indicates the Camino Real zone is really the northwest strike extension of the Shore zone. The new structures are hosted within an envelope of phyllic alteration that also encompasses the Shore and Camino Real zones. The structures are characterized by quartz +/- carbonate +/- barite veins and stockworks hosting podiform sulphide mineralization consisting of variable amounts of pyrite, tetrahedrite, sphalerite, galena and arsenopyrite. The veins form 'stacked', en echelon, sigmoidal lenses up to 100 metres in length and up to 1.5 metres wide, but are typically between 20 and 40 metres long. Hostrocks are sericite altered, but not strongly quartz or K-feldspar altered as at the Shore zone to the southeast. The structures seem to be feathering out to the northwest, and probably mark the northern limit of the Shore zone mineralizing event.

Exploration to date has outlined proven and probable reserves of 83,703 tonnes grading 12.7 grams per tonne gold and 158.7 grams per tonne silver at the Shore zone (Assessment Report 24610).

Historical drilling was concentrated on the southern end of the zone. Drilling in 2011 tested the northwest extension of the zone yielding modest results.

In 2010, drilling highlights included 1.69 grams per tonne gold and 42.12 grams per tonne silver over 61.73 metres in hole SU-45 (Armstrong, T.A. (2011-04-04): Technical Report and Updated Resource Estimate on the Snowfield-Brucejack Property).

In 2011, drilling highlights included 1.27 grams per tonne gold and 30.4 grams per tonne silver over 30.0 metres in hole SU-173 (Ghaffari, H. (2012-02-20): Technical Report and Updated Preliminary Economic Assessment of the Brucejack Project).

Refer to West (104B 193) for details of related mineralization and work history.