The Jake North occurrence is located approximately 19 kilometres northwest of Motase Peak and about 162 kilometres north of the town of Smithers.
The regional geology is similar to that of the Tommy Jack occurrence (094D 031) located 21.5 kilometres southwest.
The Jake claims are underlain by interbedded mudstones, siltstones, sandstones, wackes and minor conglomerates of the Upper Jurassic to Lower Cretaceous Bowser Lake Group. These grey to black sediments commonly contain plant fossils, which occur as black wavy laminae. The sediments are intruded by dikes and stocks of biotite-plagioclase porphyry or biotite-hornblende-plagioclase porphyry. The sediments have been hornfelsed around the intrusions. The dikes have a general northeast trend and swarm over a distance of 7 kilometres, pinching to the south and covered by overburden to the north. The dikes are related to, and contemporaneous with, either the Late Cretaceous Bulkley Plutonic Suite, which occur further to the south, or the Eocene Kastberg Intrusions (Assessment Report 16838). The sediments are generally flat lying to gently dipping and are folded. The folds have vertical axial planes and the fold axes plunge gently to the south-southeast.
Sulphide mineralization is controlled by the large porphyry system developed by the dike swarm. The mineralization can be divided into an early, middle and late hypogene stage, and a supergene stage.
The early hypogene stage is characterized by copper-molybdenum sulphides in an intensely pyritized area. The best mineralization appears to be associated with potassic alteration and consists of chalcopyrite, molybdenite, bornite and pyrite disseminated in altered country rocks and in small veins or stockworks.
The middle hypogene stage is predominantly characterized by silver, lead and zinc-bearing veins. The veins are composed of white quartz and/or ankerite and contain dark brown sphalerite and pyrite with lesser galena and chalcopyrite.
The late hypogene stage is characterized by argillic alteration zones with pods and veins of pyritic chalcedony. Five alteration zones are recognized: a core vein zone, a silicified zone, an argillic zone, an argillic-sericite zone and an outer propylitic zone. Sulphide mineralization consists of disseminated sphalerite, galena and pyrite associated with the chalcedonic core vein zone. Minor chalcopyrite is associated with the argillic zone.
The supergene stage is characterized by jarosite gossan and hematite. Mineralization consists of native copper, malachite, azurite and chalcanthite. Chalcocite may be present but was not positively identified (Assessment Report 16838).
One of the best samples analyzed was taken from near an unnamed tributary of the Squingula River. The sample assayed 2.25 grams per tonne gold, 0.16 per cent copper and 8.4 grams per tonne silver (Assessment Report 16838). Another sample from this area assayed 0.3 gram per tonne gold, 33 grams per tonne silver and 1.25 per cent lead (Assessment Report 16838).
The Jake property was first staked by Kennco Exploration in 1965. Initial exploration work consisted of stream sediment and rock chip sampling and two AX diamond-drill holes (55.5 metres).
During 1968-1971, Canadian Superior explored the porphyry potential of the property by conducting rock and soil geochemical surveys, geological mapping, a magnetometer survey and diamond drilling (1205.5 metres). The “Discovery Zone” returned 0.39 per cent copper and 27.43 grams per tonne silver across a surface exposure of 27.5 metres, while diamond drilling intersected grades of 0.2 to 0.4 per cent copper and 13 to 34 grams per tonne silver (Property File Placer Dome - Shevchenko, 1989). In 1977, Cities Services Minerals Corporation conducted additional soil and rock sampling, geological mapping and diamond drilling (437 metres). The best drill intersection assayed 0.19 per cent copper and 3.67 grams per tonne silver over 40 metres (Property File Placer Dome - Shevchenko, 1989).
Placer Development Limited optioned the property in 1986 and performed a reconnaissance soil geochemistry survey. Placer conducted heavy mineral sampling throughout the area. Analytical results indicated a pronounced gold-arsenic anomaly on the north and south ridge, with the south ridge showing especially strong enrichment in arsenic and antimony. Placer proposed the possibility for gold-arsenic mineralization in rocks capping a porphyry system south of the main creek. Accordingly, they recommended that the down-thrown block south of the main creek should be explored for a structurally-controlled, epithermal, precious-metal deposit, characterized by breccia pipes, fault-controlled alteration zones and areas of crackle breccia.
During 1997-99, Teck Corporation conducted geological mapping, geochemical sampling, petrographic studies and diamond drilling on the north ridge, however, the 1999 drilling results were not filed and are not in the public domain.
Electrum Resources Corp. carried out geological and geochemical exploration programs and regional satellite imagery studies, in and around the Jake property, since 2007.
In December 2016-18, United Mineral Services Ltd. acquired the Jake 1, 2 and 3 claims by staking. These claims host a large portion of a strong coincident gold-copper-lead-zinc-silver-antimony soil geochemical anomaly, mainly covering the south ridge. A 2017 exploration program conducted by United Mineral Services consisted of an airborne magnetic geophysical survey, which covered the full extent of its Jake mineral claims by 31 east-west oriented flight lines and 6 orthogonal tie lines. A 3D magnetic vector inversion was also carried out on the data set. The results of the airborne magnetic survey highlighted two areas of interest within the survey block, associated with zones of elevated magnetics. In 2019, on behalf of United Mineral Services Ltd., a review, digitization, modelling and interpretation of the Jake property historical surface geochemistry was undertaken. The purpose of the review was to delineate drill targets for future exploration programs and discovery of porphyry-style copper-gold deposits on the Jake property.
