The Chief North occurrence is located approximately 20 kilometres south of the Yukon-British Columbia border, near Little Rancheria River, about 150 kilometres north of the community of Dease Lake.

Upper Devonian-Lower Mississippian Earn Group siliceous, black argillite and well foliated graphitic shale contain a horizon of clean, massive to poorly laminated barite up to 6 metres in thickness. Chip samples yielded an average BaSO4 content of 91.16 per cent over 6.0 metres (Assessment Report 10974).

In 1981, the Chief property was staked for Regional Resources Ltd. to protect base metal stream sediment and soil anomalies and the probable source of massive sulphide float boulders located during reconnaissance prospecting. Additional staking of four claims was undertaken in July 1982 to cover a seven kilometre airborne geophysical anomaly and a new showing of stratiform barite. The 1982 program included a combined airborne electromagnetic, resistivity and magnetometer survey, grid preparation (12 kilometre cut baseline), geological mapping, prospecting and soil geochemistry (1757 samples).