Mr. Killian Charles reports

BRUNSWICK EXPLORATION DRILLS 69.3 METERS AT 1.64% LI2O AT MR-6

Brunswick Exploration Inc. has released the final results from the Mirage winter drilling campaign. The Mirage project is located in the Eeyou Istchee-James Bay region of Quebec, approximately 40 kilometres south of the Trans-Taiga Road. The winter drill campaign focused on the Central zone and has continued to intersect wide and well-mineralized intervals within the MR-6 dike.

Highlights include:

• New interval at the MR-6 dike with 1.64 per cent lithium oxide over 69.3 metres in drill hole MR-24-61 and 1.17 per cent Li2O over 28.3 metres in drill hole MR-24-50, both starting from surface.
• New MR-9 dike, located approximately 600 metres northeast of MR-6, with 1.07 per cent Li2O over 14.4 metres in drill hole MR-24-45 and 2 per cent Li2O over four metres in drill hole MR-24-51, now drill traced over 400 metres.
• Further evidence of significant dike stacking located 350 metres southeast of MR-6 where drill hole in MR-24-59 intersected several mineralized pegmatite dikes and all remain open in every direction.
• Brunswick Exploration to announce its 2024 summer exploration program in the coming weeks, including its program for Mirage, Northern Quebec, Labrador and Greenland.

Killian Charles, president and chief executive officer of Brunswick Exploration, commented: "Drilling once more confirms the scale and high-grade nature of the MR-6 dike at surface. The dike remains open in several direction and will be the focus of a future drilling campaign to better define its extent.

"After two small drill campaigns and approximately 12,000 metres drilled, we have already identified over nine major dikes, all near surface, within an initial 2.5 km by 2.5 km area. There exists significant potential to expand all of these dikes both along strike and down dip. Our work also highlighted several new pegmatite discoveries that were previously unknown and which only have a single intercept indicating strong opportunities for continued exploration success beyond the nine major dikes.

"I look forward to announcing our plans for the summer where Brunswick Exploration is, once again, expected to be one of the largest grassroot explorer globally."

Mirage project drilling overview

The Mirage project comprises 427 claims located roughly 40 kilometres south of the Trans-Taiga Highway in Quebec's James Bay region and 34 kilometres northeast of Winsome Resources' Adina project. At Mirage, a spodumene-bearing pegmatite boulder field extends over three kilometres in a northeast direction and several dozen well-mineralized pegmatite outcrops have been observed along a 2.5-kilometre-long trend farther to the northeast. Both the extent of the outcrops and boulder train remain open in all directions (see Aug. 21, 2023, press release).

The Central zone sits on a synformal fold hinge axis, oriented east-northeast, where multiple wide high-grade pegmatite dikes were intercepted by drilling, including the major dikes MR-3 and MR-6. MR-6 is interpreted to be a large, thick, subhorizontal dike with a higher-grade core with potential evidence of zonation to the northwest. Latest results confirm a thickening of the MR-6 dike to the southwest in MR-24-62 where drilling intercepted 93.45 metres at 1.55 per cent Li2O (see May 8, 2023, press release).

This new release confirmed the MR-6 dike further 40 metres to the southwest with 1.64 per cent Li2O over 69.3 metres, starting from surface, in drill hole MR-24-61. The dike remains open to the northeast and to the southwest where it presents coarser and more prevalent spodumene mineralization and is thicker than other portions of the dike. MR-6 dike extends to the northwest for more than 400 metres with 19 metres at 0.62 per cent Li2O intersected in drill hole MR-24-66. In this region, the MR-6 dike appears to be more heterogenous with changing mineralogy and highly variable spodumene concentration.

Farther to the southeast, drill hole MR-24-50 extends the MR-6 dike 40 metres with 28.3 metres at 1.17 per cent Li2O. The dike is open to the southeast where it maintains its very shallow dip. It is believed the dike becomes sheeted toward drill holes MR-24-31 and 32; however, further drilling will be required to confirm this interpretation.

There is potential to extend MR-6 350 metres to the west where it remains open toward the MR-3 dike. The MR-3 dike demonstrates significant apparent thicknesses of up to 50.6 metres at 1.06 per cent Li2O (see Dec. 4, 2023, press release) in core with a moderate dip of 50 degrees toward the south with true thickness estimated at 95 per cent in all reported holes. MR-3 is oriented northeast and reaches the surface where it can be traced continuously for more than 400 metres of strike with consistent thickness of 40 metres.

Drill hole MR-24-59, located 350 metres east of MR-6, shows evidence of significant dike staking. At least seven dikes were intersected in the hole with varying thickness and spodumene concentration with the largest zone measuring 26.7 metres of semi-continuous pegmatite mineralization. This new sheeted dike system is believed to be associated to the high-grade, near-surface dikes intersected in MR-24-60, located 250 metres to the northwest (see April 25, 2023, press release).

Quality assurance/quality control

All drill core samples were collected under the supervision of BRW employees and contractors. The drill core was transported by helicopter and by truck from the drill platform to the core logging facility in Val d'Or. Each core was then logged, photographed, tagged and split by diamond saw before being sampled. All pegmatite intervals were sampled at approximately one-metre intervals to ensure representativity. Samples were bagged; duplicated on one-quarter core splits, blanks and certified reference materials for lithium were inserted every 20 samples. Samples were bagged and groups of samples were placed in larger bags, sealed with numbered tags, in order to maintain a chain of custody. The sample bags were transported from the Brunswick Exploration contractor facility to the ALS laboratory in Val d'Or. All sample preparation and analytical work was performed by ALS by inductively coupled plasma atomic emission spectroscopy according to the ALS method ME-MS89L. All results passed the QA/QC screening at the lab and all inserted standard and blanks returned results that were within acceptable limits. All reported drill intersections are calculated based on a lower cut-off grade of 0.3 per cent Li2O, with maximum internal dilution of five metres. Host basalts adjacent to the dikes may grade up to 0.3 per cent Li2O but were excluded from the reported intersections.

Qualified person

The scientific and technical information contained in this press release has been reviewed and approved by Simon T. Hebert, vice-president, development. He is a professional geologist registered in Quebec and is a qualified person as defined by National Instrument 43-101.

About Brunswick Exploration Inc.

Brunswick Exploration is a Montreal-based mineral exploration company listed on the TSX Venture Exchange under symbol BRW. The company is focused on grassroots exploration for lithium in Canada, a critical metal necessary to global decarbonization and energy transition. The company is rapidly advancing the most extensive grassroots lithium property portfolio in Canada and Greenland.

We seek Safe Harbor.