The playbook — lithium · October 15, 2026
Brunswick logs a 302-metre spodumene hit — assays still pending
A new Anais hole drilled 302 metres of lithium-bearing rock, about 100 metres deeper than the hole that assayed 1.31%. No grade in hand yet.
Brunswick Exploration drilled a 302-metre length of spodumene-bearing pegmatite — spodumene is the hard-rock mineral that carries lithium — in hole AN-26-17 at its Anatacau Main project in Quebec’s James Bay region. The company estimates the rock is roughly 30% spodumene by eye. That is a visual guess, not a lab number: no lithium grade has come back for this hole. When we last covered Brunswick, the assays on a nearby hole, AN-26-15, had just landed at 1.31% Li2O over 202.45 metres — the grade that matters for a lithium deposit. This new hole is about width and depth; the number stays open.
Here is why the geometry is interesting. AN-26-17 steps roughly 100 metres (stated 80–160 metres) below AN-26-15, pushing the dyke to about 500 metres of vertical depth and supporting the idea that the mineralized rock keeps going down. The company applied a disclosed true-width factor of 78% to 80%, implying about 235 to 242 metres of true thickness — large, if the grade confirms. The interval also contains about 3% host-rock xenoliths — stray chunks of surrounding rock mixed in. The company interprets the dyke as flattening and thickening at depth, which would be favourable for scale. The stock has been moving: BRW rose 40% over three months while the lithium benchmark LIT fell 8.9% and base-metals peers fell 3.2% — a step-up in the final weeks that reads as company-specific, not a sector tide. CEO Killian Charles built the company after corporate-development stints at Integra Gold and Osisko Metals; his background is capital markets, not mine-building, and his personal stake is about 0.15%.
Now the honest part. There is no assay grade for AN-26-17 — “30% spodumene” is a visual estimate, and visual counts routinely overstate contained lithium, so the 302-metre width cannot be turned into tonnes until the lab reports. No cut-off grade or compositing interval is stated. This is a single hole: of four holes drilled at Anais, only AN-26-15 has returned assays, so strike and continuity across the sector remain sparsely sampled. The company’s comparisons to other deposits and “largest of the decade” framing are promotional, not peer-verified. From our last entry, the three remaining Anais assays (roughly 1,700 metres) are still pending; the Mirage assays promised in “coming weeks” are still not in; and drilling to confirm the dip change at depth remains open. What to watch: assays for AN-26-17 and the two other unreported summer holes, timing not stated, and further Anatacau results the CEO flags for “the coming months.”