American Rare Earths Channel Sampling Program Highlights TREO Grades up to 13,651 ppm

HIGHLIGHTS

• Channel sampling throughout Cowboy State Mine returned TREO grades up to 13,651 ppm (1.37%)
• 15 of 106 samples exceeded 4,500 ppm TREO
• Magnet uncommon earth oxides (MREO) averaged 1,023 ppm, roughly 28% of whole TREO composition
• Heavy Rare Earth Oxides (HREO) averaged 464 ppm, representing ~13% of TREO composition
• Outcomes can be integrated into the useful resource mannequin in help of Pre-Feasibility Examine, which stays on observe for completion in late 2025

DENVER, Could 08, 2025 (GLOBE NEWSWIRE) — American Rare Earths Restricted (ASX: ARR | OTCQX: ARRNF | ADR: AMRRY) (ARR or the Firm) is happy to report the outcomes from a mapping and channel sampling program throughout the Cowboy State Mine (CSM) space, a part of the Halleck Creek Rare Earths Venture in Wyoming. A complete of 106 channel samples had been collected throughout Pink Mountain by geologists from Wyoming Rare (USA) Inc (WRI), ARR’s wholly owned U.S. subsidiary, in collaboration with technical help from Geosyntec.

Assay outcomes confirmed elevated uncommon earth mineralization throughout the Pink Mountain space, together with a standout pattern grading 1.37% (13,651ppm) Whole Rare Earth Oxide (TREO). TREO grades of Pink Mountain Pluton (RMP), the uncommon earth bearing rock kind, ranged from 711 ppm to 13,651 ppm with a median of three,661 ppm. On common, magnet uncommon earth oxides¹ (MREO) account for about 28% of the entire uncommon earth content material (1,023 ppm), whereas heavy uncommon earth oxides² (HREO) symbolize round 13% (464 ppm). A complete of 15 samples exceeded 4,500 ppm TREO, indicating areas of elevated-grade materials throughout the system.

These outcomes additional spotlight the southern portion of Pink Mountain as internet hosting a few of the highest-grade materials noticed to date for the CSM space. The channel sampling information is at present being integrated into an up to date geological mannequin and mineral useful resource estimate for the CSM space. This mannequin will help mine planning and help the Pre-Feasibility Examine, which stays on observe for completion in late 2025.

Chris Gibbs, Chief Govt Officer, stated:
“Halleck Creek is shaping up to be the following main uncommon earths challenge in the US. With the high-value core 4 magnet uncommon earths together with neodymium, praseodymium, dysprosium and terbium persistently current throughout the Cowboy State Mine, we’re advancing one of many few U.S. tasks able to supplying these vital supplies at scale.

What’s particularly encouraging is the continued affirmation of those core 4 uncommon earths throughout the sampled space. Specifically, terbium and dysprosium are important for high-temperature magnet efficiency and stay in extraordinarily restricted provide outdoors of China. Primarily based on our Scoping Examine, they’re anticipated to contribute over 25 % of challenge revenues, regardless of representing a small proportion of total tonnage.

Importantly, we don’t want federal allowing reform to transfer ahead. Being situated on state lands in Wyoming offers us a transparent and streamlined path to growth. With China’s current export bans on terbium and dysprosium, the nationwide significance of Halleck Creek as a safe home supply has by no means been clearer.

As outlined in our Up to date Scoping Examine³, a staged growth may see first manufacturing as early as 2029. With its scale, simplicity and multi-generational useful resource potential, Halleck Creek has the attributes to turn out to be one among America’s most important uncommon earths tasks.”

Detailed announcement with JORC Desk and technical report might be discovered right here.

This launch was approved by the Chairman of American Rare Earths.

About American Rare Earths Restricted:

American Rare Earths (ASX: ARR | OTCQX: ARRNF | ADR: AMRRY) is a vital minerals firm on the forefront of reshaping the U.S. uncommon earths business. By way of its wholly owned subsidiary, Wyoming Rare (USA) Inc. (“WRI”), the corporate is advancing the Halleck Creek Venture in Wyoming—a world-class uncommon earth deposit with the potential to safe America’s vital mineral independence for generations. Positioned on Wyoming State land, the Cowboy State Mine inside Halleck Creek affords cost-efficient open-pit mining strategies and advantages from streamlined allowing processes on this mining-friendly state.

With plans for onsite mineral processing and separation amenities, Halleck Creek is strategically positioned to scale back U.S. reliance on imports—predominantly from China—whereas assembly the rising demand for uncommon earth components important to protection, superior applied sciences, and financial safety. As exploration progresses, the challenge’s untapped potential on each State and Federal lands additional reinforces its significance as a cornerstone of U.S. provide chain safety. As well as to its useful resource potential, American Rare Earths is dedicated to environmentally accountable mining practices and continues to collaborate with U.S. Authorities-supported R&D packages to develop progressive extraction and processing applied sciences for uncommon earth components.

Buyers can observe the Firm’s progress at www.americanree.com

For additional data contact:

A photograph accompanying this announcement is offered at https://www.globenewswire.com/NewsRoom/AttachmentNg/09dbcb71-a182-4729-9412-882b9afa9fdc

¹ MREO = Pr6O11, Nd2O3, Tb4O7, and Dy2O3
² HREO = Y2O3, Eu2O3, Gd2O3, Tb4O7, Dy2O3, Ho2O3, Er2O3, Tm2O3, Yb2O3, and Lu2O3
³ ASX Announcement 7 March 2025