Welcome to our dedicated page for American Rare Earths news (Ticker: ARRNF), a resource for investors and traders seeking the latest updates and insights on American Rare Earths stock.
American Rare Earths Limited (ARRNF) generates frequent news as it advances the Halleck Creek Rare Earths Project in Wyoming and positions itself within the U.S. critical minerals landscape. Company announcements highlight technical milestones, resource updates, permitting progress and corporate developments that are central to understanding its trajectory as a rare earths developer.
News coverage often focuses on mineral processing breakthroughs, such as impurity removal neutralization tests on allanite-based ore, the selection of magnesium oxide as the preferred neutralizing reagent, and the successful production of mixed rare earth oxalate and mixed rare earth oxide (MREO) from Halleck Creek ore. These updates provide insight into how the company is de-risking its hydrometallurgical flowsheet and moving toward a robust Pre-Feasibility Study.
Investors can also follow resource and exploration news, including updated Mineral Resource Estimates for the Cowboy State Mine area, channel sampling results, and new drilling permits at both the Cowboy State Mine and Bluegrass exploration areas. These releases outline how geological data and modeling are refining the scale and classification of resources within Halleck Creek.
Corporate and strategic news includes board and management changes, expanded relationships with engineering partners such as Tetra Tech, and initiatives to explore U.S. government funding opportunities for critical minerals projects. Quarterly activity reports and AGM addresses summarize progress in test mining, optimization work, permitting and funding, and frame Halleck Creek’s role in the broader U.S. mine-to-magnet strategy.
By tracking ARRNF news, readers can monitor how American Rare Earths is progressing from exploration and test work toward potential development, and how its technical and regulatory milestones may influence the long-term outlook for the Halleck Creek Project.
American Rare Earths (AMRRY) has defined a three-stage pilot plant pathway to accelerate production of pre-production rare earth oxide from the Halleck Creek Project.
Front-end milling and mineral concentration will occur in Wyoming (Western Research Institute, DISA) and final hydrometallurgical refining at SRC in Saskatoon, Canada, using the PFS flowsheet and experienced engineering leadership.
American Rare Earths (ADR: AMRRY) has awarded a Whole of Property Development Assessment (WPDA) for its 8,108-acre Halleck Creek rare earths project, with work starting in Q2 2026 and running through end-2026. The WPDA will integrate geology, metallurgy, mining and permitting to plan multi-phase development across Cowboy State, Red Mountain, Overton Mountain and Bluegrass.
Halleck Creek hosts ~2.63 billion tonnes in-situ and an estimated 8.64 million tonnes contained Total Rare Earth Oxide; Cowboy State shows a ~20-year mine life and a 0.383 strip ratio. The WPDA will use December 2025 processing test results to inform expansion scenarios and permitting pathways.
American Rare Earths (OTCQX:AMRRY) is accelerating a Halleck Creek pilot plant to produce pre-production rare earth concentrate, engaging metallurgical lead Jaye T. Pickarts and ordering key front-end equipment.
Preliminary test work shows ~94% gangue rejection, ~70% TREO recovery and roughly 10x grade enrichment. The company holds a 60,000-tonne exploration permit and has mined ~3,100 tonnes for testing.
American Rare Earths (OTCQX: AMRRY) engaged Tetra Tech on March 30, 2026 to complete an Oxides to Metals study for its heavy rare earths (HREE) stream from the Halleck Creek project in Wyoming.
The study will evaluate technologies (including molten salt electrolysis and calciothermic reduction), target Sm, Gd, Tb and Dy, select a preferred route, and provide process flow, mass balance and preliminary capital and operating cost estimates.
American Rare Earths (ADR: AMRRY) appointed Nick Lissolo as Vice President, Corporate Development and Strategy, effective March 25, 2026. Lissolo joins from Newmont with 17 years in mining finance and will lead corporate development, portfolio strategy, capital markets and advance the Halleck Creek Rare Earths Project in Wyoming.
The company confirmed no additional material employment terms and named the Board authorization.
American Rare Earths (OTCQX: AMRRY) has engaged a US exploration and geoscience consultancy to review historical data and design targeted follow-up work for gold, silver, copper and manganese at its La Paz Project in La Paz County, Arizona.
The La Paz tenure comprises approximately 2,779 ha (6,866 acres) of federal claims plus a 260 ha (640 acres) state mineral lease. The review will consolidate mapping, re-log historic drill material, re-evaluate geochemistry and assess geophysics, producing a ranked inventory of precious and base metal targets and potential focused follow-up in 2026.
American Rare Earths (ADR: AMRRY) was selected to provide feedstock to the U.S. Department of Energy METALLIC consortium for domestic critical minerals and materials supply‑chain research. In December 2025 the company supplied approximately 5 tonnes of allanite ore from the Cowboy State Mine for testing across four METALLIC test centers.
METALLIC brings nine national labs together to validate and commercialize processing methods; ARR’s mineral processing flowsheets will be tested alongside novel methods, offering third‑party technical validation and potential efficiency gains.
American Rare Earths (ADR: AMRRY) consolidated the President and CEO roles, with Mark Wall assuming both positions effective immediately. Management will focus on accelerating the Halleck Creek project and pursuing a US listing. The company plans a Whole of Property Assessment of a 2.63 billion tonne Halleck Creek resource and an Opportunity Assessment of La Paz in Arizona.
The Board says the consolidation aims to sharpen decision-making and speed project execution toward becoming a domestic mine-to-magnet supply source.
American Rare Earths (OTC:AMRRY) CEO Mark Wall outlines progress at the Halleck Creek rare earths project and strategic priorities for 2026. Key items: successful production of mixed rare earth oxalate and oxide from Halleck Creek material, target completion of a Pre‑Feasibility Study in 2026, and planned mining permit submission in 2026.
The company highlights Wyoming jurisdictional strength (Fraser Institute July 2025 ranking #4) and is evaluating U.S. listing and funding pathways to advance scale-up, offtake discussions, and stakeholder engagement.
American Rare Earths (ADR: AMRRY) and its subsidiary Wyoming Rare (USA) Inc. partnered with the University of Wyoming School of Energy Resources to receive a STAR Project award under UW's NSF-funded ART program on Jan 22, 2026.
The award will fund milestone-driven research to assess tailings and byproducts from the Halleck Creek rare earths project, producing a database of material properties, computational evaluations of end-uses, and small-scale lab validation to assess technical viability and potential economic impact.