The West showing lies approximately 1.2 kilometres southwest of the MFJ prospect (104H 001) and 8 kilometres southeast of the village of Iskut. The showing is in the high rolling terrain of the Tanzilla Plateau.

The West showing comprises several mineralized quartz vein systems within a 400 by 10 metre zone along the faulted western margin of a monzonite dike. The dike, possibly related to the Early Jurassic Rose and Edon plutons (Geological Survey of Canada Open File 1080), intrudes Lower Jurassic fragmental feldspar porphyritic andesite of the Lower Jurassic Hazelton Group (Open File 1997-03). The monzonite dike and surrounding volcanics have been intensely brecciated and healed by quartz with minor calcite. Potassic and propylitic alteration comprising potassium-feldspar, chlorite, epidote, and pyrite surround the vein systems. Mineralization consisting of fine-grained disseminations and stringers of chalcopyrite, bornite and pyrite, with associated magnetite, occur within a fine network of grey-blue quartz veins.

Three hand-dug trenches have tested the showing and a grab sample assayed 1.9 per cent copper, 15.6 grams per tonne silver and 0.04 gram per tonne gold (Assessment Report 17316).

In 2005, a helicopter-borne geophysical survey was carried out on behalf of Firesteel Resources Inc. on the Rok property. The survey comprised a new tri-directional magnetic gradiometer system, and a gamma ray spectrometer system. The airborne survey was flown at 200 metre line spacings with a total survey coverage of 611.4 line-kilometres.

In 2011, geochemistry surveys were performed by Lions Gate Metals Inc. on the ROK-Coyote claims (owned by Firesteel Resources Inc.), in the vicinity of the MFJ (104H 001) and West (104H 002) mineral occurrences, in order to extend historic copper in soil anomalies (Assessment Report 33117). A total of 8 rock samples, 885 soil samples and 31 mobile metal ion soil samples were collected. Anomalous copper and gold values were returned from both the soil and mobile metal ion samples, beyond the historic anomalies. A 26.275 line-kilometre ground magnetic survey was performed concurrently with the geochemical surveys.

In 2013, OZ Exploration Pty Ltd carried out an exploration program on the ROK Coyote Project, under a Joint Venture agreement with Firesteel Resources Inc (Assessment Report 35259). OZ drilled 1740 metres in 3 three diamond-drill holes, conducted 26.5 line-kilometres of 3D offset line pole-dipole IP/resistivity surveying and 316 line-kilometres of airborne magnetic and radiometric surveying. Eight MINFILE occurrences were covered by the airborne survey with four of these (MFJ, West, B18 and O.K) also occurring within the IP/Resistivity survey boundaries. The 8 MINFILE occurrences are: MFJ (104H 001), West (104H 002), South (104H 006), Hi (104H 014), Coyote 3 (104H 024), B18 (104H 032), Silver Standard (104H 045) and O.K. (104H 046). A total of 3500 hectares of geological mapping was also completed. A number of chargeability and resistivity anomalies were discovered, some of which were tested during the 2013 drilling. See MINFILE occurrences MFJ (104H 001), O.K. (104H 046) and B18 (104H 032) for drill results.

The West showing is one of seven anomalous areas with greater than 200 parts per million copper plus elevated gold in soils, determined from historic and 2017 soil sampling, that characterize a nine-kilometre-long favourable mineralized trend. The trend extends from the Mabon (North ROK) developed prospect, southeast to Ealue Lake. One rock sample collected in the 2017 sampling program assayed 0.22 gram per tonne gold and 4.03 per cent copper (Colorado Resources News Releases, November 21, 2017 and January 18, 2018).

On Sept 16 of 2020, Colorado Resources announced that it had changed its name to “QuestEx Gold & Copper Ltd.” effective September 28, 2020.

See MFJ (104H 001) for related information on ROK Coyote occurrences.