The area of the Fog showing is underlain by the contact of Upper Triassic volcanics of the Stuhini Group and volcanic rocks of the Tertiary to Quaternary Mount Edziza Complex. The Fog showing is located approximately 1200 metres west of the Central Zone (104G 036), both part of the Spectrum property. The showing is exposed on a series of steep, strongly gossanous, quartz-sericite pyrite altered outcrops which are situated in the hangingwall of a west-northwest-trending normal fault.

The Fog Showing was identified in 1984. One drillhole was completed at the Fog showing by Cominco in 1989. Lithological logs for S89-38 indicate that bedrock is composed of a mixed package of ash and crystal tuffs intruded by narrow monzonite dikes. One major fault zone with associated alteration and vein mineralization was intersected at a depth of about 89 metres. The drillhole intersected a broad zone of elevated gold.

In 1990 Columbia Gold Mines excavated several trenches (T35 to T40) over zones of narrow quartz-sulphide veins in limonitic, siliceous, andesitic tuffs and flows. Native gold was seen in one vein at the southwest end of Trench 35. Six continuous chip traverses were sampled. The vein with native gold (at the southwest end of Trench 35), assayed 7.5 grams per tonne gold over 0.76 metre (Assessment Report 20861). With one exception, the remainder of the samples yielded less than 1 gram per tonne gold (Assessment Report 20861).

One drillhole was completed at the Fog showing by Cominco in 1989. Lithological logs for S89-38 indicate that bedrock is composed of a mixed package of ash and crystal tuffs intruded by narrow monzonite dikes. One major fault zone with associated alteration and vein mineralization was intersected at a depth of about 89 metres. The drillhole intersected a broad zone of elevated gold that assayed 0.596 gram per tonne gold over 96.3 metres starting at a depth of 62.9 metres. This includes a zone of higher assays proximal to the fault zone at 89 metres of 40.8 metres grading 1.03 grams per tonne gold including 2.0 metres at 9.18 grams per tonne gold (Assessment Report 36675). Higher gold values are associated with disseminated and veinlet sphalerite plus chalcopyrite. Alteration is characterized by increased silica and potassium-feldspar. Drill logs show an increase in biotite hornfels alteration away from the mineralized interval.

The 2015 soil sampling program on the Spectrum property by Skeena Resources outlined a relatively small (350 metres by 200 metres), but strong gold-arsenic-lead-antimony-zinc soil anomaly that extends south under the Mount Edziza basalt cap. A total of 6 rocks samples were collected at the Fog in 2015 and 2016. The maximum values were 0.30 gram per tonne gold, 2.3 grams per tonne silver and 0.02 per cent copper (Assessment Report 36675). The showing lies just beyond the northwest margin of 2016 IP coverage. Surface maps of inverted chargeability indicate a northwest trending high chargeability feature may extend towards the showing and is open north and west of the survey area.

Refer to Spectrum (MINFILE 104G 036) for details of a common property work history.