The Galore Creek property is interpreted to be an example of an alkalic porphyry copper–gold–silver system.
The Project is situated within the Stikine Terrane, an exotic terrane accreted to the ancestral North American craton. A sequence of Permian, Mississippian and Devonian age calc-alkaline and bimodal flows and volcaniclastic rocks, interbedded carbonate and minor shale and chert, termed the Stikine assemblage, form the basement of the terrane. Unconformably overlying the Stikine assemblage is a succession of Lower to Middle Triassic sedimentary and upper Triassic volcanic rocks.
The Galore Creek Syenite Complex, of Tertiary age, is centered in the west fork of Galore Creek and is 5 km in length and 2 km in width. The deposits are hosted by potassium-enriched volcanic rocks and pipe-like breccias adjacent to syenite stocks and dykes. They are manto-shaped, and trend north to northeast, following either, or both, syenite contacts and structural breaks. To date, 14 deposits and prospects have been identified, five of which, the Central Zone, Southwest Zone, Junction Zone West Fork Zone and Middle Creek Zone are of economic interest.
Disseminated pyrite is the most abundant sulphide mineral. Chalcopyrite and bornite in the ratio 10:1 are the main copper minerals. Sphalerite and galena are associated with garnet-rich areas and trace amounts of molybdenite, native silver, native gold and tetrahedrite have been noted (Allen, 1966). Magnetite oc ........
