Brunswick Exploration Intercepts 202 Metre-Wide Spodumene-Bearing Pegmatite Interval at the Anatacau Main Project
A 202.45-metre spodumene-bearing interval at Anatacau Main enlarges the Anais dyke footprint and depth, but assay results are still pending.
Rhea-AI Summary
Brunswick Exploration (BRWXF) reported a 202.45-metre spodumene-bearing pegmatite intercept in drill hole AN-26-15 at the Anatacau Main Project in Quebec.
The interval, visually estimated to average 25% spodumene, extends the Anais Main dyke to a vertical depth of 300 metres, with true thickness estimated at approximately 75% of the interval. The hole was a 130-metre down-dip step-out and confirms that pegmatite dykes at Anatacau thicken at depth while remaining mineralized, with local visual estimates up to 35% spodumene.
Including AN-26-15, the Anais Main dyke footprint is now traced over roughly 650 by 350 metres and remains open in all directions. Two holes totaling about 800 metres have been drilled in the Anais sector so far, with all assays pending and to be released when available.
Positive
- 202.45 m spodumene-bearing pegmatite interval in AN-26-15, average visual 25% spodumene
- Anais Main dyke confirmed to 300 m vertical depth, thickening at depth
- Dyke footprint now traced over roughly 650 by 350 m, open in all directions
- Two holes totaling about 800 m drilled in Anais sector in 2026 campaign
Negative
- None.
AI-generated analysis. How Rhea-AI works. Not financial advice.
MONTREAL, Sept. 17, 2026 (GLOBE NEWSWIRE) -- Brunswick Exploration Inc. (TSX-V: BRW, OTCQB: BRWXF; FRANKFURT:1XQ; “BRW” or the “Company”) is pleased to report the results of a drill hole that represents an exceptional and material expansion to the Anais dyke at the Anatacau Main Project, located 20 km east of Rio Tinto's Galaxy project, in the Eeyou Istchee James Bay region of Quebec. This hole is part of the 2026 summer drill campaign, which is still ongoing at the Anatacau Main Project.
Significant Highlights of Drill Hole AN-26-15:
- The hole’s intercept of 202 metres of spodumene-bearing pegmatites containing, on average, an estimated
25% spodumene extends the Anais dyke to a vertical depth of 300 metres. - This represents the single largest pegmatitic intercept drilled by Brunswick Exploration across its portfolio and is one of the largest mineralized intercepts reported in the James Bay amongst lithium focused companies.
- The Anais dyke remains open in all directions and is significantly expanded following this drill hole. At this time, BRW believes there is considerable potential to continue expanding this discovery.
- The drill hole also encountered several other spodumene-bearing pegmatite intervals, separate from the 202-metre intercept, with widths of up to 21.3 metres, containing between 20–
35% spodumene. - Assays are pending and will be released as quickly as possible.
The Anatacau Project is strategically located approximately 440km north of Matagami by road, whereas PMET Resources’ Shaakichiuwaanaan project is 840km away, and WhiteRock’s Banana project is 1,060km away.
Mr. Killian Charles, President and CEO of BRW, commented: “While it is atypical for us to release mineralized intervals without assays, we believe the size of this major interval and its implication for the Anatacau Main project is highly material to Brunswick Exploration shareholders as it instantly elevates the Anais dyke to being one of the most exciting discoveries globally. Importantly, this discovery remains open in all directions. We are actively drilling at Anatacau and look forward to expanding this discovery. More details from future work programs at Anatacau will be shared shortly.”
Mr. Charles continued: “Of note, we will be also releasing exciting assays from Mirage in the coming weeks. It is once more an affirmation of our strong exploration focus as we continue to expand our portfolio. Brunswick Exploration has now made two sizeable discoveries, Mirage and Anatacau, and sees more opportunity in Greenland, the Middle East and further abroad."
Figure 1: Surface Map of the Anatacau Main Project and Drill Holes Completed
Figure 2: Cross Section A-A’ (see Figure 1 for Location)
Figure 3: Regional Map of the Anatacau Main and Anatacau West Projects
Figure 4: Representative Core Photo (320 to 382 meters)
Discussion of Results
To date, a total of two holes totaling approximately 800 metres have been drilled in the Anais sector, with all assay results pending.
Hole AN-26-15 targeted the Anais Main dyke in a large, down-dip, 130 meter step-out and returned three major pegmatitic intervals, 8.35 metres, 21.50 metres and 202.45 metres, confirming the Anais Main dyke to a vertical depth of 300 metres. This 202-metre intercept also confirms that the dykes at Anatacau significantly increase in size at depth, where it remains highly mineralized, with up to
Hole AN-26-15 also extends the Anais Main dyke footprint to the west, which is now traced over 650 by 350 metres and remains open in all directions.
The thickening of the pegmatitic intrusions at depth will be tested by hole AN-26-16 (in progress), which is targeting the down-dip extension of the dykes intercepted in AN-26-08 (123 metres at
Table 1: Best LCT Pegmatite Intervals
| Hole ID | From (m) | To (m) | Length (m) |
| AN-26-15 | 171.65 | 180.00 | 8.35 |
| Total length | 8.35 | ||
| 211.40 | 232.90 | 21.50 | |
| Total length | 21.50 | ||
| 274.25 | 282.30 | 8.05 | |
| 284.55 | 292.60 | 8.05 | |
| 298.40 | 395.35 | 96.95 | |
| 397.50 | 402.40 | 4.90 | |
| 408.55 | 421.40 | 12.85 | |
| 424.90 | 427.80 | 2.90 | |
| 433.00 | 450.40 | 17.40 | |
| 454.80 | 463.70 | 8.90 | |
| 470.40 | 476.70 | 6.30 | |
| Total length | 202.45 | ||
*The true thickness of the Anais dyke is estimated to be approximately
**Interval total may contain up to
Table 2: Drill Hole Collars (UTM Nad83, Zone 18N)
| Drill Holes | Azimuth | Dip | Length (m) | UTM X | UTM Y | Elevation (m) |
| AN-26-14 | 100 | 47 | 295 | 380333 | 5784464 | 207 |
| AN-26-15 | 125 | 52 | 498 | 380198 | 5784693 | 198 |
| AN-26-16 | 95 | 58 | In progress | 380394 | 5784538 | 200 |
Note
SEC Technical Report Summary for the James Bay Lithium Project prepared by SLR Consulting (Canada), Wave International Pty and WSP Canada for Arcadium Lithium Plc., dated August 31 2023.
QAQC
All drill core samples were collected under the supervision of BRW employees and services contractor Explo-Logik, applying industry-standard QA/QC procedures to its drilling and prospecting programs. All sample preparation and analytical work will be performed by Agat Laboratories. Samples will be prepared with methods 200075 and 200087 and dissolved in a sodium peroxide solution, prior to multielement analysis by ICP-OES and ICP-MS according to the Agat method 201378.
Qualified Person
The scientific and technical information contained in this press release has been reviewed and approved by Mr. Simon T. Hébert, VP Development. He is a Professional Geologist registered in Quebec and is a Qualified Person as defined by National Instrument 43-101.
About Brunswick Exploration
Brunswick Exploration is a Montreal-based mineral exploration company listed on the TSX-V 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, Greenland and Saudi Arabia underpinned by its Mirage project, one of the largest undeveloped hard-rock lithium Inferred Mineral Resource Estimate in the Americas, with 52.2Mt grading
Investor Relations/information
Mr. Killian Charles, President and CEO (info@BRWexplo.com)
Contact number: 514 861 4441
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FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
What additional spodumene-bearing intervals were intersected in hole AN-26-15 besides the main 202.45-metre interval?
Hole AN-26-15 encountered several separate spodumene-bearing pegmatite intervals apart from the 202.45-metre interval. These additional intervals include lengths of 8.35 m and 21.50 m, along with multiple shorter intervals ranging from about 2.90 m to 17.40 m, with visual spodumene estimates between 20–35%.
Are assay results available for the new Anatacau Main discovery in hole AN-26-15?
Assay results for hole AN-26-15 and the other hole drilled in the Anais sector are not yet available. All assays are pending and will be released as quickly as possible once analytical work at Agat Laboratories is completed.
How does AN-26-15 fit with previous drilling and interpretations at Anatacau Main?
The new interpretation suggests dykes at Anatacau thicken and remain mineralized at depth. This is consistent with relationships observed between earlier holes AN-26-09 (36 m at 1.08% Li₂O) and AN-26-10 (9.9 m at 0.58% Li₂O and 8 m at 0.59% Li₂O). Hole AN-26-16, currently in progress, is testing the down-dip extension of dykes intersected in AN-26-08 (123 m at 0.72% Li₂O).
Where is the Anatacau Main Project located relative to nearby infrastructure and projects?
The Anatacau Main Project is located in the Eeyou Istchee James Bay region of Quebec, approximately 20 km east of Rio Tinto's Galaxy project and about 440 km north of Matagami by road.
What quality assurance and quality control procedures are used for the Anatacau drilling program?
All drill core samples are collected under the supervision of Brunswick Exploration employees and contractor Explo-Logik, using industry-standard QA/QC procedures. Sample preparation and analytical work will be performed by Agat Laboratories, with preparation methods 200075 and 200087, sodium peroxide digestion, and multielement analysis by ICP-OES and ICP-MS using method 201378.