Ausmon’s South Australian REE Results Signal Exploration Challenges Ahead

• Aircore drilling assays reveal Total Rare Earth Oxides (TREO) up to 2,192 ppm
• Exploration covers 2,316 km² across Parrakie, Wilkawatt, and Peake tenements
• Three target zones (LC01, LC02, LC03) identified with elevated REE mineralisation
• Next drilling phase planned with landholder engagement and environmental approvals
• Results support and extend previous 2024 drilling successes in the region

Exploration Progress in the Limestone Coast

Ausmon Resources Limited has released encouraging assay results from its recent Aircore drilling campaign targeting rare earth elements (REEs) within its Limestone Coast Project in South Australia. The drilling, conducted in May 2025 across three tenements, Parrakie, Wilkawatt, and Peake, has returned Total Rare Earth Oxides (TREO) grades reaching as high as 2,192 parts per million (ppm), a significant indicator of mineralisation potential in the region.

These tenements collectively cover an expansive 2,316 square kilometres within the Murray Basin, an area known for hosting the Loxton/Parilla sands, which are prospective for REE mineralisation. The recent assays complement and extend the promising results from Ausmon’s 2024 drilling programs, reinforcing the presence of a mineralised trend across the project area.

Target Zones and Drilling Strategy

The company has delineated three key target areas, LC01, LC02, and LC03, spanning a total of 122 square kilometres where elevated TREO grades have been identified. These zones emerged from broadly spaced road verge drilling designed to maximise coverage cost-effectively. Future drilling will adopt a tighter spacing of 200 to 400 metres to better define the mineralisation and focus on the highest-grade zones.

With 57 holes drilled for a total of 1,001 metres, the 2025 program concentrated on Wilkawatt and Peake, adjacent to Parrakie where earlier encouraging results were obtained. The shallow nature of the drilling, averaging 18 metres in depth, targets the flat-lying Loxton/Parilla sands, which are known hosts for ionic clay rare earth deposits.

Next Steps and Community Engagement

Looking ahead, Ausmon plans to transition from road verge drilling to more detailed exploration on freehold land. This will involve assembling cadastral data, engaging with landholders, and conducting community consultations to secure access agreements. The company is preparing for the next phase of Aircore drilling, which will require environmental approvals and budgeting considerations.

These steps are critical to advancing the project from early-stage exploration towards resource definition. The involvement of experienced geologists and adherence to rigorous sampling and assay protocols, including independent laboratory analysis by ALS in Adelaide, underpin the credibility of the results.

Regional Context and Market Implications

The Limestone Coast Project sits in a region where Australian Rare Earths has reported a substantial JORC-compliant resource at its nearby Koppamurra REEs Project, highlighting the broader potential of the Murray Basin for rare earth mineralisation. Ausmon’s results contribute to growing investor interest in Australian rare earths, a sector gaining strategic importance amid global supply chain considerations.

While the assay results are promising, they represent an early stage of exploration. The true economic viability, including resource size, grade continuity, and metallurgical characteristics, remains to be established through further drilling and studies.

Bottom Line?

Ausmon’s latest assays mark a pivotal step in unlocking rare earth potential in South Australia, with the next drilling phase poised to sharpen the project’s resource picture.

Questions in the middle?

• How will Ausmon manage land access and community relations for drilling on freehold land?
• What are the timelines and funding plans for the next phase of exploration?
• How do these assay results compare with nearby projects in terms of economic potential?