Brunswick Exploration Begins Maiden Drilling Program at Anatacau Primary

• The invention of an extra three new main dykes positioned between 200 and 500 meters northeast of MR-6, which returned 33.2 meters at 1.1% Li ₂ O in drill gap MR-25-110, 20 meters at 1.3% Li ₂ O and 11 meters at 1.2% Li ₂ O in drill gap MR-25-112.
• The “Stacked Dyke” zone was prolonged 150 meters to the north, with gap MR-25-106 intersecting 17.4 meters at 1.01% Li ₂ O .
• Over the course of the Winter 2025 program, BRW has found a complete of 4 new main dykes measuring between 10 meters and 35 meters, all positioned close to floor and within the core of the venture all of which stay open in all instructions.
• Elevated tantalum concentrations proceed to be strongly related to lithium mineralization with values constantly starting from 150 to 350ppm. Additional metallurgical work will likely be accomplished to find out the viability of manufacturing a tantalum byproduct.

Mr. Killian Charles, President and CEO of BRW, commented: “Brunswick Exploration stays one of the compelling tales within the mining sector as we leverage the atypical mixture of superior exploration work at Mirage alongside an aggressive international lithium grassroot program which has no comparable friends. Because the lithium market regains energy over the approaching quarters and years, we’re uniquely positioned to profit from new discoveries and the continued improvement of Mirage.

“At this time’s outcomes serve as soon as extra to spotlight the exploration potential of Mirage. Even after greater than 20,000 meters of drilling during the last 18 months, we’ve repeatedly and proceed to intercept new dykes of considerable width and grade. As we transfer towards a maiden useful resource estimate in late 2025, I’m extraordinarily pleased with the work the BRW exploration group has achieved throughout its nonetheless rising pipeline of tasks.”

Mirage Venture Drilling Overview

The Mirage Venture includes 427 claims positioned roughly 40 kilometers south of the Trans-Taiga Freeway in Quebec’s James Bay area and 34 kilometers northeast of Winsome Sources’ Adina Venture.

The drilling marketing campaign was primarily aimed toward extending the mineralized “Stacked Dyke” zone to the northeast. The highlights introduced on this press launch are proven in Desk 1 and Figures 1 and a pair of. Collar areas are supplied in Desk 2.

Determine 1 : Zone Location at Mirage Venture

Determine 2 : Central Zone of the Mirage Venture

Drill gap MR-25-110 led to the invention of a brand new spodumene-bearing pegmatite dyke, grading 1.1% Li₂O over 33.2 meters from 217 to 251 meters (vertical depth of 180 meters), whereas drill gap MR-25-112 returned 1.3% Li₂O over 20 meters from 367.9 to 387 meters (vertical depth of 290 meters). These two new dykes are interpreted to be sub-parallel, oriented roughly N130/30. Drill gap MR-25-112 additionally intersected one other dyke grading 1.2% Li₂O over 11 meters from 328 to 339 meters (vertical depth of 250 meters), which is believed to be additionally parallel to the others. These new intersections spotlight the stacking of sub-horizontal mineralized dykes on this space. The dykes stay open in all instructions.

Determine 3 : Part A-A’

Drill gap MR-25-117 additionally intersected a 27-meter-wide pegmatite from 329 to 356 meters. This pegmatite is interpreted to be the identical one intersected in drill gap MR-25-112 (which returned 1.3% Li₂O over 20 meters from 367.9 to 387 meters). Nevertheless, because of the proximity of the Lac Orion fault, in MR-25-117, the pegmatite reveals vital alteration and the spodumene has been largely changed by cookeite. In consequence, decrease values of lithium have been reported and solely a smaller subinterval returned vital lithium with 1.8% Li₂O over 3.2 meters. Nonetheless, the presence of the dyke over sizeable widths is extraordinarily encouraging and stays a wonderful follow-up goal for additional drilling marketing campaign.

Drill gap MR-25-109 prolonged the “Stacked Dyke” zone by greater than 100 meters to the North, with a number of spodumene-bearing pegmatite intersections. The widest interval returned 1.3% Li₂O over 13.3 meters, from 21.4 to 34.7 meters. The dykes on this gap are sub-horizontal and display a change in orientation in comparison with the central zone, the place dykes sometimes dip 60 to 70 levels to the southeast.

Drill gap MR-25-116 intersected over forty reasonably mineralized pegmatite dykes, usually of restricted thickness. Whereas the lithium grades have been modest, this gap highlights the robust potential for the mineralized system to proceed towards the Northeast. The intersected dykes stay open in all instructions.

Drill gap MR-25-113, positioned roughly 4.5 km northeast of the central zone, was accomplished as a reconnaissance exploration gap. Sadly, no spodumene-bearing pegmatite was intersected on this gap.

Desk 1: 2025 Winter Drilling Program Mentioned on this Launch

True thickness is estimated to fluctuate between 80% and 90% throughout all reported holes within the 2025 Winter marketing campaign.

Desk 2 : Drill Gap Collars

3D mannequin replace

Following the completion of the 2025 Winter drill marketing campaign, Brunswick Exploration, in collaboration with PLR Sources (https://www.plr-resources.com/), up to date its 3D mannequin in preparation for a primary useful resource estimate deliberate for late 2025. Determine 3 reveals the placement of the sections introduced in Figures 5 and 6.

Determine 4: Location of Part B-B’ and C-C’

Determine 5 : Part B-B”

Determine 6 : Part C-C’

Observations from area work and drilling point out that the geometry of the pegmatite dykes within the core of the venture (overlaying North, Central and South Zone) is intently linked to a regional antiformal folding sample. Though the dykes domestically seem like folded, proof strongly helps that their emplacement was primarily managed by the hinges of those antiformal folds, relatively than the dykes being merely passively deformed post-emplacement.

The emplacement of the pegmatites is interpreted as syn- to post-tectonic, probably occurring in the direction of the ultimate levels of the second deformation occasion within the area. This timing corresponds with a lower in regional stress situations, permitting pegmatitic melts to be targeted and emplaced in structurally favorable zones resembling fold hinges and lithological contacts.

Hydrothermal alteration noticed in particular segments of sure pegmatite dykes, notably at MR-3 and MR-6, signifies post-emplacement metasomatic fluid exercise. These fluids are believed to be related to reactivation alongside close by constructions, notably the Orion Lake Fault, which probably acted as a fluid conduit throughout late-stage tectonism.

Of be aware, the function of gabbroic models within the space stays to be absolutely decided; nonetheless, their constant spatial affiliation with pegmatite dykes suggests they might even have influenced pegmatite emplacement. Some pegmatite dykes may very well be guided by contacts between metagabbro and metavolcanic rocks, doubtlessly performing as rheological boundaries favorable to dyke propagation.

QAQC

All drill core samples have been collected below the supervision of BRW workers 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. Every core was then logged, photographed, tagged, and break up by diamond noticed earlier than being sampled. All pegmatite intervals have been sampled at roughly 1-meter intervals to make sure representativity. Samples have been bagged; duplicated on reject, blanks and authorized reference supplies for lithium have been inserted each 20 samples. Samples have been bagged and teams of samples have been positioned in bigger luggage, sealed with numbered tags, with a view to preserve a sequence of custody. The pattern luggage have been transported from the BRW contractor facility to the AGAT laboratory in Val-d’Or. All pattern preparation and analytical work was carried out by AGAT by sodium peroxide fusion with ICP-OES and ICP-MS end. All outcomes handed the QA/QC screening on the lab and all inserted customary and blanks returned outcomes that have been inside acceptable limits. All reported drill intersections are calculated primarily based on a decrease cutoff grade of 0.3% Li2O, with most inner dilution of 5 meters. Host basalts adjoining to the dykes could grade as much as 0.3% Li2O however have been excluded from the reported intersections.

Certified Individual

The scientific and technical data contained on this press launch has been reviewed and authorised by Mr. Simon T. Hébert, VP Improvement. He’s a Skilled Geologist registered in Quebec and is a Certified Individual as outlined by Nationwide Instrument 43-101.

About Brunswick Exploration

Brunswick Exploration is a Montreal-based mineral exploration firm listed on the TSX-V below image BRW. The Firm is concentrated on grassroots exploration for lithium in Canada, a vital steel essential to international decarbonization and vitality transition. The corporate is quickly advancing probably the most intensive grassroots lithium property portfolio in Canada and Greenland.

Investor Relations/data

Mr. Killian Charles, President and CEO ( data@brwexplo.ca )

Cautionary Assertion on Ahead-Trying Data

This information launch incorporates “forward-looking data” inside the that means of relevant Canadian securities laws primarily based on expectations, estimates and projections as on the date of this information launch. Ahead-looking data includes dangers, uncertainties and different elements that would trigger precise occasions, outcomes, efficiency, prospects and alternatives to vary materially from these expressed or implied by such forward-looking data. Components that would trigger precise outcomes to vary materially from such forward-looking data embrace, however are usually not restricted to, delays in acquiring or failures to acquire required governmental, environmental or different venture approvals; uncertainties referring to the provision and prices of financing wanted sooner or later; modifications in fairness markets; inflation; fluctuations in commodity costs; delays within the improvement of tasks; the opposite dangers concerned within the mineral exploration and improvement trade; and people dangers set out within the Company’s public paperwork filed on SEDAR at www.sedar.com. Though the Company believes that the assumptions and elements utilized in making ready the forward-looking data on this information launch are cheap, undue reliance shouldn’t be positioned on such data, which solely applies as of the date of this information launch, and no assurance might be on condition that such occasions will happen within the disclosed time frames or in any respect. The Company disclaims any intention or obligation to replace or revise any forward-looking data, whether or not on account of new data, future occasions or in any other case, aside from as required by regulation. Neither the TSX Enterprise Alternate nor its Regulation Providers Supplier (as that time period is outlined within the insurance policies of the TSX Enterprise Alternate) accepts duty for the adequacy or accuracy of this information launch.

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