Resources are now 186 million tonnes grading 712 parts per million total rare earth oxides, with contained TREO 60% larger at 132,000t.

It is one of the largest and most advanced resources in Australia, and includes a measured and indicted 99Mt.

The company says in a rapid period it has defined a world-class ionic clay-hosted rare earth province, and considering it has drilled just 2% of its tenure, and the system remains open to the north and south the potential is enormous.

It has also upscaled its exploration target between 340Mt and 3.1Bt at average grades between 510-780ppm, more than double the upper end of the previous target.

The growth isn’t over yet, with a further 30,000m drilling program set to start in October, extending into previous undrilled areas.

AR3 CEO Travis Beinke said each campaign was progressively building confidence in the scale of the opportunity and the consistent nature of the mineralisation. 

Metallurgical test work continues.

The company says all the signs suggest Koppamurra is the heart of a globally significant rare earth mineral province with “multigenerational” potential within a tier one mining jurisdiction that offers the potential for rapid, low-cost growth and rehabilitation.

First production is targeted in 2025-26.