Terrain Minerals Targets High-Grade Rare Earths in Western Australia's Clay Basin
Terrain Minerals has resumed drilling operations at its fully owned Lort River rare earths project, located in the Albany Fraser belt approximately 50 kilometres northwest of Esperance in Western Australia. The company has launched a critical follow-up aircore program aimed at evaluating whether a standout drill hit from a year ago could indicate a much larger rare earths deposit.
Drilling Program Details and Objectives
The new drilling blitz will cover 1500 metres of step-out drilling across a shallow clay basin, initially identified through an airborne electromagnetic geophysical survey. This campaign specifically targets ground around a previous scout hole that reported impressive results, including 8 metres at 4037 parts per million (ppm) total rare earth oxides (TREO) from 23 metres downhole. Notably, this interval included two high-grade 1-metre sections: one grading 9842ppm TREO from 25 metres and another assaying 9022ppm TREO from 27 metres depth.
These high-grade TREO hits also delivered encouraging magnet rare earths responses, which are particularly valued for their use in manufacturing high-performance permanent magnets essential for electric vehicles, wind turbines, and modern electronic devices. The first 1-metre slice reported significant magnet rare earths, including 2362ppm neodymium, 647ppm praseodymium, and 291ppm dysprosium from 25 metres. The second hit came in with 1645ppm neodymium, 437ppm praseodymium, and 215ppm dysprosium from 27 metres.
Potential Scale and Strategic Timing
Terrain Minerals believes the conductive clay basin holds serious potential for both grade and volume, with the interpreted system stretching over 12 kilometres long and 5.5 kilometres wide within a 66 km² regolith zone. Executive director Justin Virgin stated that this step-out program is designed to test priority zones near the high-grade intersection, assessing the broader area for scale and consistency of grade. Initially, samples will be taken in three-metre composite batches and submitted for testing.
With the cropping season approaching, management has identified March as the last practical window to access the broadacre paddocks before the land becomes unavailable. Terrain has seized this opportunity to conduct rare earths reconnaissance drilling after completing campaigns at its Smokebush gold-silver projects near Yalgoo in WA's Mid West region, where assay results are still pending.
Future Prospects and Exploration Significance
If the latest drilling demonstrates good grade repeatability and continuity across the basin, Terrain says Lort River could quickly emerge as an intriguing clay-hosted critical minerals play in a region that has only been lightly explored for this style of mineralisation. Using a relatively low-cost aircore drill rig to probe the shallow ground, the company is poised to determine whether a larger rare earths target exists beneath the surface, potentially matching the early excitement generated by initial findings.
