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American Rare Earths Limited (ASX:ARR)

ALERT: Price-sensitive ASX Announcement for ARR
Current share price for ARR : $0.380 -0.005 (-1.30%)+
Announcement
Release
16 Dec 2025 9:10AM
Price at Release
$0.385
Full Release
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Summary
American Rare Earths Limited (ARR) has achieved a major technical breakthrough in the production of rare earth oxides from Halleck Creek ore. Using a preliminary Pre-Feasibility Study (PFS) mineral processing flowsheet, ARR produced a mixed rare earths oxide (MREO) by precipitating a mixed rare earth oxalate from a purified leachate solution. This milestone confirms the capability to extract rare earth metals into metallic oxides from Halleck Creek ore. The process, conducted by SGS in Ontario, Canada, involved a two-step procedure using oxalic acid to precipitate the metals and calcining at 1,000°C to oxidize the material into MREO. This production is a critical precursor for the separation of rare earth products such as Neodymium-Praseodymium, Terbium, and Dysprosium, which are essential for advanced technologies. The successful completion of this stage of mineral processing signifies a significant advancement towards U.S. rare earth supply chain independence.
Key Points
  • ARR produced mixed rare earth oxides from Halleck Creek ore.
  • Achieved using a preliminary Pre-Feasibility Study mineral processing flowsheet.
  • SGS conducted the process involving oxalic acid precipitation and calcining.
  • This production is a major milestone for Halleck Creek project.
  • MREO is crucial for producing separated rare earth products.
  • This advancement supports U.S. rare earth supply chain independence.
IMPORTANT NOTE: This information is autogenerated and has not been reviewed for accuracy or completeness. You should refer to the full announcement here for further information.