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Midland resumes drilling at Mythril on new copper-gold targets

May 27, 2021

Midland Exploration Inc. is reporting that drilling will resume on its Mythril Cu-Mo-Au-Ag project, wholly owned by Midland and located in Eeyou Istchee James Bay, Quebec. In late 2018, Midland discovered Mythril by prospecting and concluded a strategic investment with BHP Billiton Canada Inc. during the spring of 2019 totalling $5.85 million for copper exploration in Quebec. A minimum 2,000-metre campaign will test new targets generated by a new 3D Leapfrog Geo model and is starting early June 2021.

Mythril: A significant Cu-Mo-Au-Ag surface discovery in James Bay

The Mythril copper-molybdenum-gold-silver (Cu-Mo-Au-Ag) zone consists of a series of mineralized subcropping boulder fields and Cu-Mo-Au-Ag showings occurring now over a distance of more than 3 kilometres. Located about 7 kilometres south of the Trans-Taïga road and hosted in Archean rocks of the Superior Province, a first nine days of prospecting in 2018 highlighted the discovery of 11 new surface Cu-Mo-Au-Ag and 2 molybdenum-only showings, yielding values such as 2.74% Cu, 0.44 g/t Au, 0.06% Mo and 24.3 g/t Ag over 2.7 metres in a channel on the Celeborn showing. Fifty-seven (57) grab samples from mineralized outcrops along 2 km strike length returned an average of 2.03% Cu, 0.48 g/t Au, 0.18% Mo and 18.3 g/t Ag. One hundred and sixteen (116) mineralized boulders were found, yielding an average of 1.92% Cu, 0.87 g/t Au, 0.11% Mo and 20.7 g/t Ag.

A dipole-dipole induced polarization (IP) geophysical survey performed during the winter of 2019 indicated a large zone (more than 2 kilometres long by hundreds of metres wide) of anomalously high chargeability coupled with decreases of resistivity that is remarkably coincident with known Cu-Au-Mo-Ag mineralized showings and boulder fields, as well as Cu-Mo soil anomalies (see press release by Midland dated February 28, 2019).

Several new mineralized boulder fields were found in 2019 by further prospecting, located several kilometres north and northeast of the previously known Mythril showings (see press releases by Midland dated November 7, 2019 and September 5, 2019). A first occurrence of predominantly gold mineralization on Mythril was found in one of these boulder fields, to the northeast of the main trend. The gold-bearing boulders (2.84 g/t Au; 2.83 g/t Au; 0.59 g/t Au; grab samples) contain low copper (<0.15% Cu) and molybdenum (<0.01% Mo) values and consist of pyrite (up to 1%), magnetite and trace chalcopyrite in a biotite-altered granodiorite. These new 2019 boulder fields made it possible to observe a systematic increase of gold versus copper content to the east and north of the project. This type of multi-kilometre-scale variation is typical of large-scale hydrothermal systems. These new highly prospective areas were covered by an extensive IP geophysical survey in the winter of 2020 (see press release by Midland dated August 11, 2020).

Three diamond drilling campaigns were conducted in 2019 following the IP survey, which yielded grades up to 1.07% Cu, 0.37 g/t Au and 8.87 g/t Ag (1.41% CuEq.*) over 12.55 metres intersected in drill hole MYT-19-06 (see press release by Midland dated May 16, 2019). The drilling phases successfully identified an anomalous Cu-Mo-Au-Ag halo on the project and permitted the creation of a 3D Leapfrog Geo model. The best drilling results are summarized below. Note that the true thickness of reported drill intervals cannot be determined with the information currently available.

Tags: Quebec / Exploration / Copper / All Articles