The JLN occurrence is located on upper ridge sides, north side of Willian Creek, approximately 24 kilometres southeast of Terrace, B.C.
The Midas property, which covers the JLN showing, is underlain by Permian and older Mount Attree volcanics (Zymoetz Group) and Eocene Williams Creek pluton granodiorite. The volcanics consist of submarine volcanic rocks comprising greenstone, andesite-rhyolite tuff, and massive andesite. These are extensively altered and gossanous. The volcanics are weakly to intensely foliated, striking north-northwest and dipping 70 to 80 degrees east. A major fault, trending 010 degrees and dipping 80 to 90 degrees east, cuts the volcanics, and has associated mineralized shear zones and quartz veins. It has only been relatively recently (ca. 2007) established by the British Columbia Geological Survey mapping that Mount Attree rocks are of Paleozoic age and occur as part of the Paleozoic to Mesozoic Stikine assemblage of Stikinia. Stikinia’s Lower Jurassic Telkwa Formation andesites and rhyolites occur extensively east of the property. The property is on Stikinia’s western boundary with the Cretaceous to Tertiary age Coast Plutonic Complex.
In 2007, mapping by the British Columbia Geological Survey discovered mineralization and alteration consistent with a distal, Kuroko-type volcanic-hosted massive sulphide (VHMS) system within a package of highly altered Paleozoic volcanic rocks. Key to this discovery was the recognition of a group of Paleozoic submarine volcanic rocks, named the Mount Attree volcanics, which had previously been mapped as part of the Lower Jurassic Telkwa Formation. The Telkwa volcanic rocks are not considered prospective for VHMS deposits because they formed in a subaerial, compressional environment, whereas the Paleozoic volcanic rocks formed in a submarine setting and an extensional tectonic environment favourable to VHMS formation. Furthermore, the Paleozoic volcanic rocks are correlative with the Stikine assemblage which is host to multiple, significant VHMS deposits within British Columbia (Fieldwork 2007).
The JLN showing area is underlain by three unconformity-bounded formations: volcanic and sedimentary rocks of the Mount Attree volcanics (Zymoetz Group); limestone of the Permian Ambition Formation and a basal conglomerate Early Jurassic Telkwa Formation. These formations are intruded by a small diorite stock of probable Early Jurassic age and are underlain by granites of the Eocene Williams Creek pluton.
Locally, calc-silicate altered and mineralized outcrops occur along the boundary of a Permian limestone unit within garnet, epidote, hematite and magnetite skarns. The thickness of the zone of alteration at the limestone contact ranges from 1 to 10 metres.
The mineralized zone ranges between 0.10 and 2.0 metres thick and consists of a wide variety of irregularly banded sulphides and oxides. Typically mineralized zones consist of massive magnetite or hematite with disseminated chalcopyrite, or massive pods of chalcopyrite or sphalerite, and alteration products. Silver sulphosalts are associated with quartz veins.
In 2007 to 2008, Pembroke Mining completed a program of prospecting, geological mapping and geochemical sampling. The limestone contact was mapped for over a strike length of 800 metres, and was successful in identifying an almost continuous 1 kilometre long zone of copper-zinc-silver mineralization. Chip and grab samples, from the same year, yielded 67,550 parts per million (ppm) copper, 892 ppm zinc and 93.4 ppm silver over 20 metres (Assessment Report 30634).
In 2016, the Midas property was staked by J2 Syndicate Holdings Ltd. following a reconnaissance exploration program. Multiple property visits were conducted during the 2016 field season to follow-up on anomalous rock samples, and a total of 283 rock and 39 silt samples were taken. The Midas property covers the Gazelle (103I 185), Sub (103I 240), VG, Copper Queen (103I 131), JLN (103I 231) and Sleeping Giant showings. In 2017, as part of the start of the 2017 exploration program at the Midas property, a 733 line-kilometre SkyTEM 312M aerial electromagnetic survey was flown on behalf of J2 Syndicate Holdings.
In 2017, as part of the start of the 2017 exploration program at the Midas property, a 733 line-kilometre SkyTEM 312M aerial electromagnetic survey was flown on behalf of J2 Syndicate Holdings (Assessment Report 36907). In 2018, J2 Syndicate Holdings Ltd. and Juggernaut Exploration Ltd. focused exploration efforts on the King Soloman Trend with LiDAR, Induced Polarization and rock sampling surveys followed by 16 holes (1977 metres) of NQ diamond drilling (Assessment Report 38320). In 2019, 9 more NQ holes were drilled in the the King Soloman Trend (Assessment Report 38961).
