Victory’s North Stanmore yttrium uplift: leach design notes for mine planners
Reviewed by Joe Ashwell

First reported on Australian Mining
30 Second Briefing
Victory Metals has reported “exceptional” metallurgical leaching results from its 100 per cent-owned North Stanmore heavy rare earth project in Western Australia, with a particular uplift in yttrium recoveries. The company is advancing column leach tests and optimisation of acid consumption after earlier bottle-roll work, targeting a clay-hosted rare earth system amenable to low-cost in-situ or heap leach-style processing. For geometallurgy and mine design, the results point to potential simplification of beneficiation flowsheets and greater emphasis on leach pad hydrology and solution management rather than complex concentrator circuits.
Technical Brief
- Bottle-roll leach tests were conducted on clay-rich drill samples from Victory’s North Stanmore project.
- Testwork focused on heavy rare earth element deportment within ion-adsorbed clay horizons rather than hard-rock mineralisation.
- Acid leach conditions are being tuned to balance extraction efficiency against reagent consumption and neutralisation requirements.
- Column leach trials are being designed to better simulate vertical percolation, solution residence time and drainage behaviour in-situ.
- Geometallurgical domaining is concentrating on clay thickness, permeability and exchangeable REE content to guide future drilling.
- Victory is assessing whether in-situ leach patterns or stacked heap configurations best suit the near-surface clay geometry.
- Environmental permitting will hinge on containment of acidic raffinate, groundwater protection and clay slope stability under leach conditions.
- Outcomes will influence mine scheduling, haulage fleet sizing and whether any upfront mechanical beneficiation is retained.
Our Take
Across our coverage of Victory Metals’ North Stanmore work since early 2026, the project has progressively added value levers beyond clay-hosted rare earths alone, with hafnium and now yttrium signalling a multi-element revenue stack that can materially improve project economics in WA’s competitive rare earths space.
The earlier partnership with Curtin University’s Western Australian School of Mines positions North Stanmore well to optimise processing routes for heavy rare earth and yttrium recovery, which is critical given the metallurgical complexity typically seen in clay-hosted systems in WA.
Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.
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