The Galore Creek region is underlain by Upper Triassic volcanics and sediments of the Stuhini Group. This area is flanked to the west by Juro-Cretaceous quartz diorite to granodiorite of the Coast Plutonic Complex. Middle Triassic sediments, with Permian sedimentary and metamorphic rocks, form the northern and eastern limit of the area with Permian limestone being the dominant rock. North trending faults define boundaries between Upper and Middle Triassic rocks and between Paleozoic and Triassic rocks. Strata is folded into a series of anticlines and synclines with west or north- west trending axes. Younger folds with north-northwest trending axes transect the earlier formed structures. Syenite (orthoclase porphyry) intrusions of Juro-Triassic Age disrupt the stratigraphy and structural trends. These intrusions form a series of dykes, sheets and two or more stocks. Eocene Age quartz monzonite stocks are the youngest rocks in the area.

The Lot group of claims covers part of the mountain ridges east of Galore Creek where several copper showings have been located. These rocks consist mainly of andesites and basaltic augite porphyry. Thick sequences of Permian limestone with massive argillites outcrop at lower elevations. Many dyke-like intrusions of fine-grained diorite intrude the volcanic pile, as do irregular masses of leuco- cratic granite and syenite porphyry. The major structural feature is the Copper Canyon fault which strikes north and dips steeply to the east. Most of the intrusions are emplaced near the fault.

Several occurrences within a large area are reported: (1)disseminated pyrrhotite and chalcopyrite are identified in volcanic rocks near a diorite plug; (2)pyrite and copper minerals occupy a 130 degree trending shear in granites and (3)chalcopyrite, pyrite and malachite occurs in volcanic rocks cut by orthoclase porphyry sills and dykes. Four kilometres north, chalcopyrite mineralization occurs within faulted volcanic rocks located adjacent to the Copper Canyon fault. At the small lake 9 kilometres north are (1)quartz veins (0.10-1.2 metres wide) containing chalcopyrite and galena with gold and silver values, striking 120 degrees cutting volcanic rocks and (2) a greater than 5 metre zone of pyrite and magnetite with chalcopyrite occurs in a north striking, steeply dipping fault zone. A 4.6 metre sample from this contained 0.38 per cent copper, 10.29 grams per tonne silver, and 1.37 grams per tonne gold.