American Rare Earths (ASX:ARR) Advances Halleck Creek PFS Amid Sampling Results | asx 200 Mining Sector Update

Highlights

• American Rare Earths (ASX:ARR) updates geological model at Halleck Creek Rare Earths Project in Wyoming

• Channel sampling from Cowboy State Mine area shows consistent presence of magnet and heavy rare earth oxides

• Project timeline and development bolstered by streamlined regulatory framework on state lands

American Rare Earths, (ASX:ARR), operates within the rare earths sector and is listed on the asx 200. The company continues to focus on expanding its presence in the United States, specifically through its Halleck Creek Rare Earths Project located in Wyoming. As part of the broader minerals index, (ASX:ARR) contributes to the mining and critical materials segment of the market.

Geological Model Strengthened by New Channel Sampling

Recent updates from American Rare Earths include the integration of new channel sampling results into its geological model. These samples were collected from the Cowboy State Mine area, part of the Halleck Creek Project. The sampling campaign was designed to improve resource definition and support the upcoming Prefeasibility Study.

The data revealed notable grades of total rare earth oxide across multiple samples. A significant number of samples recorded elevated magnet rare earth oxide content. These materials, which include elements used in clean energy and defense technologies, are central to the project's development strategy.

Magnet and Heavy Rare Earths Identified Across Key Zones

American Rare Earths reported the presence of the core magnet rare earths—neodymium, praseodymium, dysprosium, and terbium—throughout the sampling area. These specific oxides are essential in permanent magnet manufacturing. In addition to these, heavy rare earth oxides were also found, supporting the broader material mix essential for various high-tech and energy applications.

The mineralogical data obtained is being incorporated into a revised resource model, which forms the foundation for mine planning activities. This refined model is expected to inform the framework of the upcoming Prefeasibility Study.

Streamlined Path to Development Without Federal Permitting

The Halleck Creek Rare Earths Project benefits from its location on state-managed lands in Wyoming. This geographical advantage allows American Rare Earths to proceed without the complexities of federal permitting. The company has highlighted this regulatory clarity as an enabling factor for advancing toward future production phases.

American Rare Earths has previously outlined a staged development approach for Halleck Creek. Preliminary assessments have indicated a scalable project model, supported by infrastructure and logistics present in the region.

Additional Exploration Underway at Bluegrass and Countryline Zones

In addition to work at the Cowboy State Mine, American Rare Earths is undertaking further exploration across the Bluegrass and Countryline areas, which are also part of the Halleck Creek Project. Sampling programs in these zones are ongoing, and updates regarding new findings are expected in due course.

These exploration efforts aim to expand the understanding of the project’s geological footprint and reinforce the long-term development vision for rare earth supply within the United States.

Project Positioned Amid Global Supply Developments

With global supply chains experiencing shifts due to export restrictions from major rare earth-producing nations, the strategic significance of domestic sources in the United States has gained increased attention. The presence of critical magnet materials at Halleck Creek positions (ASX:ARR)’s project within this broader context of resource security.

The company’s focus remains on executing its technical programs while aligning its project timelines with evolving sector dynamics. Future milestones are expected to be informed by ongoing technical assessments and resource updates across the project area.