Independent Studies Further Validate the American Rare Earths’ (ARR) Halleck Creek Project

Through the Collaboration with U.S. Department of Energy and Virginia Tech, ARR presents positive results from a metallurgical leaching study on extraction of Rare Earth Elements from Halleck Creek

Highlights
Two independent, peer reviewed, technical studies were recently published that further illustrate the economic potential of Halleck Creek:

• Minerals Engineering – (Liu, et. al., 2024)
  • 80% of Rare Earth Elements (“REE”s) extracted with low temperature, direct acid leaching.
  • Fast leaching kinetics are attributable to Halleck Creek metamict allanite structure, with 65% of REEs extracted in the first 10 minutes of leaching.
  • Halleck Creek ore is less refractory than monazite or bastnaesite, which cannot be leached using low-temperature acid tank leaching.
• Green and Smart Mining Engineering - (Xiao and Zhang, 2024)
  • High-grade rare-earth enriched Halleck Creek ore highlights its economic potential.
  • Density and magnetic separation techniques have demonstrated effectiveness in separation.
    

DENVER, May 06, 2024 (GLOBE NEWSWIRE) -- American Rare Earths (ASX: ARR | OTCQX: ARRNF and AMRRY) (“ARR” or the “Company”) is pleased to announce results from a metallurgical study on leaching extraction of REE from Halleck Creek ore by low temperature, direct acid leaching. The U.S. Department of Energy’s Office of Energy Efficiency and Renewable Energy (“EERE”) awarded a three-year (2022-2025) research contract to Phinix, LLC with American Rare Earth and Virginia Tech as team members. This metallurgical study was carried out by researchers at the Department of Mining and Minerals Engineering at Virginia Tech. These positive results further confirm the findings of the metallurgical testwork carried out by Wood PLC¹ which were previously announced by ARR.

Donald Swartz, Chief Executive Officer of American Rare Earths commented:
“We’re extremely pleased with the leaching results which further validate the recent scoping study assumptions and our optimism around the project. High REE recovery at low temperatures with short duration indicate low(er) operating costs and effective extraction of rare earths. ARR is pleased that we have been able to work with the Department of Energy, Phinix and Virginia Tech on this project and look forward to continuing the relationship in the next phases of the EERE project.”