Montreal – September 22, 2026 -- PMET Resources Inc. has completed a Phase 2 bench-scale testwork program with Koch Technology Solutions (KTS) that demonstrates a simplified, more selective pathway to convert pollucite concentrate from its Shaakichiuwaanaan Project into high-purity caesium chemical products.
KTS process shows high selectivity, bypassing costly impurity-removal stages
The bench-scale program used approximately 6 kg of pollucite concentrate, assaying 12% Cs2O, produced via X-Ray Transmission ore sorting of drill core from the Vega Caesium Zone at the CV13 Pegmatite. Results confirmed the KTS proprietary flowsheet technology achieves high selectivity for caesium with a much-reduced impurity profile, potentially allowing much of the conventional impurity-removal stages to be skipped and lowering recovery costs into a final high-purity product.
Follow-up bench-scale proof-of-concept targets marketable caesium samples
PMET is now designing a follow-up program to produce gram quantities of marketable caesium products, including caesium formate and caesium carbonate, alongside an initial OPEX-CAPEX assessment. This next phase will draw on a larger volume of pollucite concentrate generated through the ongoing BerryPick Program, which is designed to yield more than 500 kg and potentially over 1 tonne of concentrate to support future downstream testwork.
Shaakichiuwaanaan hosts world's largest pollucite-hosted caesium resource
The project's Mineral Resource comprises 0.69 Mt at 4.40% Cs2O (Indicated) and 1.70 Mt at 2.40% Cs2O (Inferred), alongside one of the world's largest lithium pegmatite Mineral Reserves. The CV13 Pegmatite sits less than 3 km from the CV5 Pegmatite, roughly 13 km south of the Trans-Taiga Road and powerline corridor, with year-round road access.
Caesium carbonate trades near US$250/kg amid tight, opaque global supply
Caesium carbonate (Cs2CO3≥99%) currently carries an indicative spot price of around US$250/kg excluding VAT, according to Shanghai Metal Markets pricing. The market remains niche and largely private, transacted through bilateral and term contracts rather than public exchanges, with global supply constrained to a limited number of sources. Existing uses span oil and gas drilling, medical imaging, atomic clocks and precision GPS navigation, with emerging demand from next-generation solar panels and lithium-ion battery additives.
Caesium and tantalum credits to feature in Q4 2026 economic assessment
PMET anticipates caesium and tantalum as co-products at Shaakichiuwaanaan, with potential revenue credited against lithium production costs. A Preliminary Economic Assessment targeted for Q4 2026 will provide the first economic evaluation of the caesium credit. The Company is deepening discussions with KTS and other strategic downstream caesium players as it advances chemical processing opportunities.