In the fall of 2022, BRW signed an option agreement with Osisko Development Corp. (TSX-V: ODEV) to acquire a 90% interest in the Anatacau Property (the “Property”) located in the James Bay-Eeyou Istchee region of Quebec.

In the summer of 2023, BRW discovered a significant lithium pegmatite outcrop, measuring at least 100m long by 15m known as the Anais showing.  The outcrop is within a larger cluster of pegmatite dykes all of which contain high grade lithium mineralization (See Press Release July 13th 2023).

This discovery is located 22km east of BRW’s Anatacau West and Allkem’s James Bay Project along a large-scale E-W deformation corridor which is host to the known lithium-bearing pegmatite dykes in the region. This structure runs through both the Anatacau West and Anatacau Main properties over a total of 15.5 km, all of which has never been explored for lithium.

The Anais showing consists of several parallel pegmatite dykes with visible spodumene mineralization. The largest dyke found to date is exposed over a 15m wide by 100m long outcrop. The mineralization varies between 5% and 50% spodumene throughout the pegmatite, with quartz, feldspars and accessory muscovite. Spodumene crystals are light grey and up to 20cm long. BRW believes the pegmatite dykes are structurally controlled, dip steeply towards the north-west with gentle folding and stacking.

To date, BRW has collected over 19 surface grab samples across the Anais showing all of which returned high grades values ranging from 1.2 to 3.8% Li2O. The majority of the samples graded above 2% Li2O, among which the highest grades (>3% Li2O) are found within the Main dyke, in massive spodumene-rich bands.

BRW is planning a maiden drill program in 2024 to test the Anais pegmatite as well as a property wide prospecting and geochemical program.

Anatacau - Main geology map
Project map geology - Anatacau