The Chief East occurrence is located approximately 23 kilometres south of the Yukon-British Columbia border, near Alec Chief Creek, about 101 kilometres north of the community of Dease Lake.

An extensive (0.5 by 3.5 kilometres) northwest trending gossanous zone of strong pervasive quartz-sericite-pyrite alteration contains numerous, irregular, narrow quartz veins with malachite staining and oxidized pyrite and chalcopyrite. The zone is hosted in Tournaisian (lower Early Mississippian) to Permian(?) Sylvester allochthon chert and argillite. The alteration superficially resembles that associated with Late Cretaceous fluorine-rich intrusions southeast of the Midway deposit (104O 038; Fieldwork 1987). The zone is coincident with a smaller and weak lead-zinc-silver soil anomaly (ca. 1982, Assessment Report 10974).

In 1981, Regional Resources Ltd. staked the Chief property to protect base metal stream sediment and soil anomalies and the probable source of massive sulphide float boulders located during reconnaissance prospecting. Additional staking was undertaken in July 1982 to cover a 7 kilometre airborne geophysical anomaly and a new showing of stratiform barite. Work completed to date (1982) includes geological mapping, geochemical soil sampling (2369 samples), prospecting, line cutting (12 kilometres) and a combined airborne electromagnetic, resistivity and magnetometer survey (Dighem II system). During the 1984 field season, work included grid preparation, geochemical soil sampling, hand trenching and a proton magnetometer survey.