The area of the Nok occurrence is underlain by andesitic pyroxene porphyry flows and andesitic lapilli tuff, breccia and agglomerate of the Upper Triassic Stuhini Group. The east half of the Nok claims were underlain by Stuhini rock while the west were underlain by an Early Jurassic monzodioritic to gabbroic pluton of the Texas Creek Plutonic Suite. Monzonite and syenite of the Upper Triassic to Early Jurassic Copper Mountain Plutonic Suite (Galore Creek intrusions) intrudes the country rock to the east.
Numerous quartz and quartz-carbonate veins up to 5 centimetres were found in the vicinity of the grid, where the Nok occurrence is found. These veins contained bornite, hematite, pyrite, chalcopyrite and/or pyrolusite. In 1990, at the end of line 9400S, Wirlwind Resources found a calcite-quartz-epidote breccia, hosting sphalerite, within a steeply dipping north- northwest trending structure. This sample (W42) resulted in assays of up to 1.32 per cent zinc, 0.34 per cent lead, 0.04 per cent copper, 4.9 grams per tonne silver and 13 parts per billion gold (Assessment Report 21073). Grab sample K27 was collected about 200 metres south-southwest of sample W42. This sample consisted of andesitic(?) rock with pyrite and assayed 1.25 grams per tonne gold and 1 gram per tonne silver; no base metal values were detected (Assessment Report 21073). Sample C82, consisting of andesite with finely disseminated pyrite, graded 0.42 per cent lead and 0.21 per cent zinc over 0.75 metres (Assessment Report 21073). It was located just over 200 metres southeast of sample W42.
In 1990, Consolidated Golden Trump Resources Ltd. and Acorn Resources Ltd. conducted an exploration program that consisted of stream sediment silt sampling, prospecting, geological mapping, soil sampling, rock geochemistry and minor hand trenching. A total of 44 man-days were spent on the claims during which 529 soil samples, 40 stream sediment silt samples and 129 rock samples were collected. Approximately 11.8 kilometres of flagged grid lines were run while soil sampling, including 0.9 kilometres of base line. Soil samples were collected at 25 metre intervals.
Some Nok property work was located just north of the Anuk RB showings that were located from 1989 to 1991 on the Anuk property. See the Anuk RB 14 showing (104G 047) for related information.
