American Rare Earths achieves MREO milestone at Halleck Creek

American Rare Earths reported production of Mixed Rare Earths Oxide (MREO) from Halleck Creek ore using an updated hydrometallurgical flowsheet during the December 2025 quarter.

The company generated oxide from purified pregnant leach solution by precipitating a mixed rare earth oxalate and calcining to MREO, linking the result to impurity‑removal neutralisation testwork that addressed historical challenges with allanite‑hosted mineralisation.

Beneficiation optimisation advanced alongside a preliminary updated mineral processing flowsheet that integrates recent testwork, with further optimisation and evaluation planned.

An updated Mineral Resource Estimate for the Cowboy State Mine area reclassified indicated resources by 68.4 Mt, underpinning ongoing technical studies and planned infill drilling across 27 permitted holes to raise geological confidence.

Corporate moves included the appointment of Mark Wall as CEO and an expanded engagement with Tetra Tech to pursue US government funding for mine‑to‑magnet capabilities. Separately, a University of Wyoming STAR project will evaluate potential benign byproducts, material properties and laboratory validation for industrial uses.

Near‑term priorities are integrating metallurgical and beneficiation results into the prefeasibility study, planning demonstration plant options, continuing environmental baseline and hydrological work for Wyoming permitting, and preparing for drilling.

Cash at quarter end was A$23.98 million, with A$2.4 million in listed financial assets; ARR also completed post‑quarter asset sales totalling A$2.89 million.