Brunswick Exploration Discovers Significant Lithium Zone at Anatacau

Event summary

  • Brunswick Exploration's 2026 winter drilling campaign at the Anatacau Main Project intersected 90.5 meters grading 1.31% Li2O within a larger 167.9-meter interval at 1.02% Li2O.
  • A new lithium-bearing dyke, measuring 6.8 meters at 1.52% Li2O, was discovered below the Anais Main dyke.
  • The Anais Main dyke has been defined to a vertical depth of 190 meters and remains open in all directions.
  • The mineralization is situated within a structural corridor analogous to Rio Tinto’s Galaxy deposit, suggesting potential for further discoveries.

The big picture

This discovery reinforces the growing interest in Quebec’s James Bay region as a premier lithium exploration jurisdiction. Brunswick’s positioning with two major assets (Anatacau and Mirage) provides a competitive advantage in a market increasingly focused on securing domestic lithium supply chains. The structural analogy to Rio Tinto’s Galaxy deposit suggests a potentially larger, more complex lithium system than previously understood, but also introduces geological risk.

What we're watching

Exploration Pace
The speed at which Brunswick Exploration can delineate additional pegmatites to the east will be critical to expanding the resource base and justifying further investment.
Structural Controls
Whether the observed structural similarities to the Galaxy deposit will translate into comparable mineralization and scale remains to be seen, and will be a key indicator of Anatacau’s overall potential.
Depth Potential
The continued depth extension of the Anais Main dyke, beyond the current 190-meter definition, could significantly increase the project’s overall resource size.

Related topics

Mining Lithium