The Imperial Kahntah barite showing is located 225 kilometres due north of Fort St. John and 120 kilometres east-southeast of Fort Nelson. It is located on the Kahntah 3 First Nations Reserve, approximately 2 kilometres west of the Kahntah River.

The Imperial Kahntah showing is situated on dominantly Cretaceous continental and marine affinity rocks of the Fort St. John Group (KF), which consists of mudstones, siltstones, shales, and other fine clastic sedimentary rocks.

At the Imperial Kahntah showing, barite occurs in brecciated dolomite of Mississippian age, 2.5 to 4 metres below the base of the Triassic at a depth of 596 metres. Fractures up to 2.5 centimetres wide are filled with barite. Some barite is also present in pores and fractures in the dolomite to a depth of 597 metres. The barite has a specific gravity of 4.5 (Pugh, 1959).