The Metarg 4 showing, located 3 kilometres west of Tatsamene Lake, occurs near the contact of a Lower Permian package, consisting of limestone, marble and calcareous sedimentary rock, with a Mississippian volcanic package; these Upper Paleozoic rocks are all part of the Stikine Assemblage. These rocks are intruded by plutons related to several separate igneous events including Middle to Late Triassic quartz diorite intrusions (unnamed), Jurassic diorite intrusions (unnamed) and Paleocene to Eocene granite and alkali feldspar granite intrusions of the Sloko-Hyder Plutonic Suite.

Several rocks samples were collected by Brixton Metals Corp in 2020 at this location with the highest copper value being 3.3 per cent copper (Figure 6-15, Press Release, Brixton Metals Corp., Dec.15, 2020). Other samples at or near same location ranged between 0.1 and 1 per cent copper. A sample taken 1 kilometre to the southwest graded 2.9 per cent copper.

In 2020 Brixton Metals Corporation completed 3,025 metres of drilling in 16 core holes on the new Central Outlaw and West Outlaw zones on their Thorn property. A total of 1473 rock samples and 5588 soil samples were also collected throughout their expanded Thorn property including from the Metla Target area that contains the new Metarg showings.

Refer to Thorn (104K 031), Chivas (104K 180), East Outlaw (104K 083) and Oban (104K 168) for details of the work history of the greater Thorn property. Also see Metarg 1, 2 and 3 for related information.