The area of the Unuk (Zone 2) occurrence is underlain by rocks of the Upper Triassic Stuhini Group. Lower Jurassic Unuk River Formation of the Hazelton Group are mapped to the immediate west. A large gossanous area was located at an elevation of between 1370 and 1525 metres, immediately west of a large icefield.

In 1987 four rock samples were taken; one chip and three float samples, the latter apparently derived from the gossan. The samples were generally described as silicified volcanic rocks containing up to 30 per cent pyrite plus/minus chalcopyrite. The highest assay result was reported to be 0.995 gram per tonne gold. An average of the 4 samples was 0.296 grams per tonne gold (Assessment Report 17087).

In 1991, Granges defined the area as a roughly 50 metre wide by 300 metre long northeast-trending zone with sporadic carbonate alteration (orange weathering) and discontinuous north to northwest-trending quartz stringers and gash veins, east of Tarn Lake. These stringers are sporadically mineralized with pyrite, arsenopyrite, sphalerite and galena. The zone is hosted in a 5-7-metre-wide argillite to siltstone unit.

This area has subsequently been mapped, covered by magnetic and IP surveys, and tested by one drill hole. Chip sampling of the structure showed it to contain highly anomalous amounts of several metals with gold values up to 12.8 grams per tonne tonne across 1.0 metre (2.85 g/tonne across 5.3 metre). Drill hole T91-1 was drilled to test this structure (Assessment Report 22113). A quartz vein fault zone was intersected between 19.57 m and 20.40 metre and is probably the Tarn Creek showing. The structure contained traces of chalcopyrite, but was otherwise barren. Its gold content was not anomalous.

See AP (104B 083) for details of a common work history on the Unuk property.