Sixty North Gold Mining Intersects Two Gold-Bearing Quartz Veins During Mining Operation

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Vancouver, British Columbia--(Newsfile Corp. - July 22, 2024) - Sixty North Gold Mining Ltd. (CSE: SXTY) (FSE: 2F40) (OTC Pink: SXNTF) (the "Company" or "Sixty North Gold") Sixty North Gold is pleased to announce that two gold zones have been encountered during development of its wholly-owned Mon Gold Mine. The target of this development, the A-Zone quartz vein has been intersected in the 970E crosscut at elevation 212m AMSL, 16 m below the historic West Stope (shown on the graphic below). Visible gold was noted in a 30 cm wide vein dipping steeply to the west with 3% sulphides, pyrrhotite > sphalerite > galena > chalcopyrite > pyrite (key pathfinder minerals for gold at the Mon Gold Mine) and significant visible gold in a 14 m wide intensely potassic-altered gabbro. The A-Zone is exposed on surface where it extends over 100m in strike. Twenty samples from 10 trenches collected by an independent geologist in this vein averaged 116.34 gpt gold over 1.1 m width (Malahoff, 2017). An estimated 10,000 tonnes of this vein was mined to a depth of 15 m below surface to 228m AMSL and 5,000 tonnes was mined from the east limb of the vein averaging 30 gpt gold (NI 43-101 Technical Report, Mon Gold Property, Northwest Territories, Canada, August 3, 2023, author Dr. D. R. Webb, Ph.D., P.Geol., P.Eng.)

Mon Gold Mine Isometric View - Operations to July 21, 2024

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The newly reported DD-Zone is located 10 m west of the A Zone and is exposed within the Main Ramp. It is defined by five historic drill holes with grades up to 12 gpt gold over 0.30 m within 1.5 metres grading 3.74 gpt gold and is exposed for 7 m along the west-wall and in the back of the ramp. The DD Zone pinches and swells and sub parallels the A-Zone but dips steeply to the east, averaging 0.3 to 1.2 m in width with 5% sulphides, pyrite > pyrrhotite > sphalerite with trace arsenopyrite and visible gold within a 1 to 2 m characteristic pink alteration enveloping the vein.

Mining starting on June 25 and has advanced the Main Ramp 44 m by slash and drift rounds. All services have been installed, all equipment is functioning well with additional equipment on site in case of mechanical issues. There have been no lost-time accidents. Sixty North Gold plans to commence subdrifting north and south on the A-Zone to collect material for stockpiling. We plan to continue the 970 cross cut another 20 m +/- to the east and drive additional crosscuts into the A-Zone quartz vein to expose more of the vein below the historic stopes on the eastern limb. The A-Zone eastern limb was tested by a number of historic drill holes within 20 m of this area including: