Australian Rare Earths (ASX:AR3) Reports Over 60% Recoveries in Koppamurra Bulk Leach Test

Thu 26 Jun 25, 06:45 AM | Team Kalkine

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Highlights:

Australian Rare Earths Limited (ASX:AR3) has released an update on its metallurgical testwork program for the Koppamurra rare earths project located in South Australia, confirming recoveries exceeding 60% of magnet rare earth elements from a large-scale heap leach trial. The test, which processed approximately three tonnes of ore, was carried out to evaluate scalability and improve the project’s process design ahead of its Pre-Feasibility Study (PFS) expected in 2025.

The bulk heap leach trial was conducted at Brisbane Met Labs (BML) and followed earlier small-scale column testing at the Australian Nuclear Science and Technology Organisation (ANSTO). According to the company, the bulk leach results align with previous column leach findings and reinforce the potential to move forward with a progressive heap leach method.

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