Mount Ridley bolsters Grass Patch rare earths project with strong historical metallurgical results

Mount Ridley Mines Limited ( (AU:MRD) ) just unveiled an announcement.

Mount Ridley Mines has reported that a review of historical metallurgical testwork shows strong leach responses for heavy rare earth elements across the Grass Patch Complex, underpinning its recently defined heavy rare earth mineral resource at Keith’s and Winston’s. The work, managed by Independent Metallurgical Operations and conducted by several specialist laboratories, confirms that key heavy rare earths such as dysprosium and terbium can be effectively recovered using conventional hydrochloric acid leaching and hydrometallurgical techniques.

The historical tests, which were not originally designed with the current HREE focus in mind, achieved heavy rare earth recoveries of up to 86.5% and light magnetic rare earth (NdPr) recoveries of up to 85.2%, alongside beneficiation upgrades of up to 202% in feed grade. These results provide a robust technical baseline for further metallurgical optimisation, flowsheet development and potential scandium and gallium by-product recovery, strengthening the project’s critical mineral credentials and supporting Mount Ridley’s efforts to advance a scalable processing pathway for its Grass Patch mineralisation.

The most recent analyst rating on (AU:MRD) stock is a Sell with a A$0.03 price target. To see the full list of analyst forecasts on Mount Ridley Mines Limited stock, see the AU:MRD Stock Forecast page.

More about Mount Ridley Mines Limited

Mount Ridley Mines Limited is an Australian exploration company focused on developing critical minerals, particularly heavy rare earth elements, at its Grass Patch Complex in Western Australia. The company targets regolith-hosted rare earth mineralisation enriched in high-value elements such as dysprosium, terbium, yttrium and NdPr, aiming to support emerging Australian and allied supply chains for strategic metals.

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Current Market Cap: A$39.83M

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