The Tat occurrence is located on Tatuk Hill, approximately 4 kilometres west of the southernmost point of Tatuk Lake, 61 kilometres south-southwest of the community Vanderhoof and 100 kilometres southwest of Prince George.

The region in which the showing occurs is within the Intermontane Belt, underlain dominantly by Lower to Middle Jurassic volcanic and sedimentary rocks of the Hazelton Group. These assemblages are overlain by the Upper Cretaceous to Lower Paleogene Ootsa Lake Group and Miocene plateau basalt. Intruding Lower Jurassic rocks of the Hazelton Group in the northeastern part of the map sheet is a belt of granodiorite, diorite and quartz diorite plutons of the Lower Jurassic Topley Intrusive Suite. Felsic plutons, probably Cretaceous, intrude both Lower and Middle Jurassic Hazelton strata.

The Tat showing is underlain by volcanic and sedimentary rocks of the lower part of the Hazelton Group, which has been intruded by a small granite stock of the Topley Intrusive Suite. Chalcopyrite and rare bornite occur as disseminations and fracture plane coatings in Hazelton mafic volcanic rocks. Often associated with the mineralization are blebs and discontinuous stringers of magnetite, garnet and epidote.

Work History

In 1970, geological mapping and a geochemical survey, consisting of 266 soil samples, was conducted by the American Smelting and Refining Company. Samples from the main copper anomaly assayed up to 360 parts per million (Assessment Report 2886).