Brunswick Exploration (TSX-V:BRW) has received additional results from a 2026 winter drilling campaign, which indicates a “well-formed system” at the Anatacau Main Project in Canada.
The latest results show the company is continuing to intersect multiple new, large, and well mineralised pegmatites to the east of the main Anais pegmatite.
Some of the latest results include 17.7m @ 1.10% lithium oxide within a larger package of continuous lithium mineralisation of 123m @ 0.72% lithium oxide; and 11.8m @ 1.84% caesium oxide – representing among the ‘highest grade and longest caesium intercepts’ reported in the James Bay region.
CEO Killian Charles says this combination of large pegmatites enriched in lithium and caesium compares “very favourably” to neighbouring projects.
Brunswick intends to initiate metallurgical testwork promptly to evaluate the recoverability of the caesium.
Charles adds that the company is beginning to define a “major” system at the project.
“After demonstrating significant mineralisation at Anais, our exploration holes to the east have provided us a first glimpse of the potential of the project as we continue to intercept multiple lithium-rich pegmatites,” Charles says.
“What is most striking at Anatacau is the strength of the mineralised fluids which formed these pegmatites.”
Anatacau Main
The mineralised pegmatite zone hosted within the structural corridor, which includes the Anais pegmatite, now extends over 500m to the east and remains open. All new pegmatites remain open in all directions.
As previously reported, the drilling campaign was designed to confirm the down-dip and lateral extensions of the Anais Main dyke at depth, as well as extend the pegmatite trend to the east.
In mid-April 2026, Brunswick received initial results which included 90.5m @ 1.31% lithium oxide, within a large package of continuous lithium mineralisation of 167.9m @ 1.02% lithium oxide.
Further, the company completed all required work expenditures and share payments to fully exercise an option agreement for the Anatacau Main and West projects earlier this month.
Brunswick now owns a 90% interest in both projects and retains a right of first refusal on the remaining free carried 10% held by privately held Electric Elements Mining.
Anatacau Main is located along a east-west trending deformation corridor which is known to control lithium-bearing pegmatite emplacement and extends across the main and west properties over a combined 15.5km strike length.
Brunswick Exploration is a Montreal-based explorer focused on grassroots exploration for lithium in Canada.
Write to Aaliyah Rogan at Mining.com.au
Images: Brunswick Exploration
