The region of the West Creek occurrence is largely underlain by late Tertiary and younger flows of the Mount Edziza eruptions. These rocks range from basalts to rhyolite in composition. A thick sequence of Upper Triassic Stuhini Group sedimentary and volcanic rock underlies the Cenozoic volcanics. These sediments are up to 900 metres thick and consist of volcanic agglomerate, greywacke, grit and chert breccia interbedded with tuffaceous siltstones. The Triassic volcanics overlie the sediments and consist of about 1200 metres of green, purple and grey andesite and derived volcaniclastics. The volcanics are cut by diorite dykes and sills, and irregular subvolcanic intrusive bodies. Small diorite and granodiorite intrusive bodies of Jurassic-Cretaceous Age cut all the Triassic rocks. The Upper Triassic rocks are warped into open folds with east-west axes. These are cut into blocks by north-south, east-west, northwest and northeast faults.

The West Creek showing is located approximately 3.7 kilometres west-southwest of the Central Zone on the north side of Tennaya Creek and was discovered by Columbia Gold Mines in 1990. Massive andesitic feldspar porphyritic breccia with argillaceous or graphitic groundmass is in fault contact to the south with siltstones and wackes. A 5 to 7 metres wide feldspar porphyritic monzonite intrudes along the east-west oriented, sub-vertical contact and is mineralized with pyrite veining.

Mineralization at the West Creek showing is reported to occur in three main locations:

1) Starting at the south end is a 1.2 metres wide quartz-massive pyrite-chalcopyrite-sphalerite vein oriented east-west and dipping 70 degrees to the north hosted by siltstone and wackes. 2016 chip samples across the vein graded 7.68 grams per tonne gold, 90.6 grams per tonne silver and 3.47 per cent copper over the 1.2 metres width (Assessment Report 36675).

2) 30 metres north of this first vein, a second vein occurs that is comprised of a 25-centimetre quartz vein and a 40-centimetre quartz vein separated by 1.0 metres of soft clay altered sheared sediments. The quartz vein material contains less than 1 to 3 per cent pyrite, less than 1 to 2 per cent chalcopyrite and less than 1 to 2 per cent sphalerite. The average grade for this 1.65-metre-wide intersection is 0.343 gram per tonne gold and 21.12 grams per tonne silver (Assessment Report 36675). In 2015, grab samples of the 40 centimetres wide vein graded 3.2 grams per tonne gold and 470 grams per tonne silver (Assessment Report 36675). A 1991, 0.91 metre wide sample in this area graded 11.65 grams per tonne gold. The veining and shearing are oriented 250 degrees to 275 degrees dipping north at 65 degrees to 78 degrees. This veining is in contact with a northeast trending feldspar porphyry or feldspar porphyritic monzonite.

3) 20 metres north of the second vein occurrence, the main area of surface mineralization is located within a 5 to 7 metres wide feldspar porphyritic monzonite at the contact between the sediments and feldspar porphyritic andesitic breccias. Mineralization consists of irregular coarse pyrite veining/stockwork within the monzonite. A 1990 sample from this area graded 202 grams per tonne gold over 0.76 metre and a resample in 1991 graded 8.54 grams per tonne gold over 0.76 metre (Assessment Report 36675). A second 1991 sample 10 metres to the west within the same structure graded 5.72 grams per tonne gold over 1.07 metres (as reported in Assessment Report 36675). The best 2015 and 2016 samples are:

1.0 metres grading 5.8 grams per tonne gold, 112 grams per tonne silver, 2.34 per cent copper; 2.0 metres grading 7.08 grams per tonne gold, 15.75 grams per tonne silver, 0.08 per cent copper; 3.0 metres grading 3.49 grams per tonne gold, 197 grams per tonne silver, 0.522 per cent copper; 3.0 metres grading 6.9 grams per tonne gold, 23 grams per tonne silver, 0.193 per cent copper (Assessment Report 36675).

A small soil grid comprising 98 samples was completed over the West Creek showing in 2015. The three mineralized locations noted above are within a 100 by 150 metre area of lead-zinc with spotty gold-silver-copper soil enrichment. Fifty metres further to the south, four samples along one of the soil lines are enriched with lead-zinc-gold suggesting a fourth area of quartz-sulphide veining may be present.

In 2016, the West Creek showing was tested by a single diamond drillhole, S16-080, drilled to test the three areas of mineralization noted above. Drilling of the West Creek target intersected gold-silver-copper 45 metres down-dip of surface mineralization and identified previously unknown porphyry style alteration and mineralization. The contact between the feldspar porphyritic volcanics and sediments is marked by faulting and shearing and is occupied by a 7.0 metres wide zone of sericite altered monzonite and silica-calcite breccias. This area is equivalent to mineralization described under point three (3) above and defines a subvertical contact between the feldspar porphyritic volcanics and the sediments. Unlike the surface expression, there is no gold enrichment in this contact zone within the drillhole.

The drillhole did intersect several quartz-pyrite-chalcopyrite-sphalerite veins and vein fragments within fault structures, the best of which returned 6.75 metres of 4.68 grams per tonne gold, 23.4 grams per tonne silver and 0.48 per cent copper starting at 108.25 metres including 1.75 metres of 14.85 grams per tonne gold, 58.5 grams per tonne silver and 0.75 per cent copper (Assessment Report 36675)

The veining is 45 metres down-dip of the most southerly surface expression of quartz-sulphide veining noted above. Immediately downhole of this mineralization the drillhole intersected 93.6 metres of wackes, siltstones and sedimentary breccias showing selective potassium-feldspar alteration of fine siltstone laminations, of feldspar grains within coarser wackes and alteration of feldspar porphyritic fragments. These same units also show fine disseminated chalcopyrite and rare chalcopyrite veinlet mineralization. Overprinting sericite alteration through this interval is cored by thin 2 to 6-centimetre planar quartz-pyrite-chalcopyrite-sphalerite veinlets. Significant porphyry-style copper-gold grades from this area are as follows: 119-148.45 metres, 29.45 metres grading 0.31 gram per tonne gold and 0.10 per cent copper; 168 to 202 metres, 34.0 metres grading 0.06 gram per tonne gold and 0.106 per cent copper (Assessment Report 36675).