PMET Resources (TSX:PMET) Produces High-Grade Caesium Concentrates from Shaakichiuwaanaan CV13 Pegmatite

3 min read | October 09, 2025 01:56 AM EDT | By Sonal Goyal

PMET Resources (TSX:PMET) Produces High-Grade Caesium Concentrates from Shaakichiuwaanaan CV13 Pegmatite — Image source: © 2025 Krish Capital Pty. Ltd.

Recovery Methodology

XRT ore sorting, a dry mechanical process commonly used in the mining industry, was applied to coarsely crushed material without requiring water or chemical reagents. The process separates high-density pollucite for the concentrate fraction while leaving lower-density material in the reject fraction. Importantly, the rejects retain significant lithium (spodumene) and tantalum (tantalite) content, which can be recovered downstream through conventional dense media separation (DMS) and gravity/magnetic methods.

Mineral Resource Context

The Rigel and Vega Zones at the CV13 Deposit form the largest known pollucite-hosted caesium pegmatite Mineral Resource globally. Current estimates include 693,000 t Indicated at 4.40% Cs2O, 2.12% Li2O, and 283 ppm Ta2O5, and 1,698,000 t Inferred at 2.40% Cs2O, 1.81% Li2O, and 245 ppm Ta2O5. The combined Shaakichiuwaanaan MRE (CV5 + CV13) totals 108.0 Mt at 1.40% Li2O, 0.11% Cs2O, 166 ppm Ta2O5 (Indicated), and 33.4 Mt at 1.33% Li2O, 0.21% Cs2O, 155 ppm Ta2O5 (Inferred).

Next Steps

The company plans to collect larger diameter drill core samples for further optimization of the XRT ore sorting process. Software used to direct the ore sorter will be refined for improved separation efficiency. Concurrent programs will recover spodumene and tantalite from the ore sorter reject fractions using gravity and magnetic methods.

Management Comments

Darren L. Smith, EVP Exploration, stated:
"These initial testwork results confirm that Shaakichiuwaanaan's CV13 Deposit has the potential to deliver highly marketable commercial grade pollucite concentrates using a relatively simple and cost-effective recovery method – XRT ore sorting. This is an encouraging outcome for this stage of testwork, with strong recoveries and upgrading. Importantly, the reject material from the XRT circuit remains well sized for subsequent spodumene recovery via conventional DMS and tantalite recovery using gravity and magnetic methods, creating a clear pathway to potentially unlocking multiple value streams from the Project."

Project Overview

The Shaakichiuwaanaan Property hosts lithium-caesium-tantalum (LCT) pegmatites within the CV Trend and is accessible year-round via all-season road. The property contains multiple pegmatites, including CV5, CV9, and CV13, with spodumene as the dominant lithium-bearing mineral alongside pollucite and tantalite.

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