Brazilian Rare Earths Unveils Record 45.7% TREO Grades at Monte Alto

Monte Alto Delivers World-Class Rare Earths Grades

Brazilian Rare Earths Limited (ASX: BRE) has announced a landmark set of assay results from its Monte Alto Rare Earths Project in Bahia, Brazil. The latest diamond drilling campaign has yielded record ultra-high-grade rare earth oxide (TREO) grades reaching an exceptional 45.7%, positioning Monte Alto among the highest-grade rare earths deposits globally.

The Monte Alto deposit, hosted within the Volta do Rio Plutonic Suite, continues to reveal thick, continuous horizons of REE-Nb-Sc-Ta-U mineralisation. Notably, drill hole MADD0101 returned a standout intercept of 37 metres at 16.1% TREO starting from just 10 metres depth, including a remarkable 7.1 metres at 35% TREO. These results underscore the deposit's shallow, stacked mineralisation zones, which could translate into favourable mining conditions with low strip ratios.

Exceptional Critical Mineral Grades and Continuity

Beyond the headline TREO figures, the drilling assays reveal extraordinary concentrations of critical rare earth elements. Neodymium and praseodymium (NdPr) grades peaked at 69,558 ppm (6.96%), while dysprosium and terbium (DyTb) reached up to 11,696 ppm (1.17%). The project also set new records for associated critical minerals, including niobium oxide (up to 1.7% Nb2O5), scandium oxide (382 ppm), tantalum oxide (962 ppm), and uranium oxide (5,781 ppm).

These ultra-high-grade zones extend both along strike and at depth, with the mineralised envelope remaining open for expansion. The continuity of mineralisation was further confirmed by infill drilling that bridged previous exploration gaps, enhancing confidence in the geological model and underpinning the forthcoming updated JORC resource estimate slated for release in the second quarter of 2025.

Monazite Sands and District-Scale Exploration Potential

Complementing the hard-rock mineralisation, the Monte Alto Project features extensive high-grade monazite sand deposits near surface. Intercepts such as 18 metres at 6.8% TREO from surface highlight the potential for low-cost extraction of free-dig mineral sands. Preliminary metallurgical testing indicates these sands are amenable to gravity and magnetic separation, offering a promising processing pathway.

In addition, Brazilian Rare Earths is actively exploring a district-scale corridor extending approximately 4 kilometres from the main deposit. Magnetic and geophysical surveys have identified multiple prospective zones, with recent discoveries including high-grade rare earth outcrops and grab samples exceeding 10% TREO. This broad exploration footprint suggests significant upside potential beyond the current resource boundaries.

Strategic Outlook and Next Steps

CEO Bernardo da Veiga emphasised the transformative nature of these results, stating that Monte Alto now stands as one of the world’s premier rare earth and critical minerals projects. The company plans to conduct a comprehensive drone-based magnetic survey and commence step-out diamond drilling to test down-plunge extensions in early 2025. Pending assay results from over 3,000 metres of drilling are expected in Q2, coinciding with the updated JORC resource publication.

With a dominant land position in the Volta do Rio Plutonic Suite and a growing portfolio of high-grade discoveries, Brazilian Rare Earths is well positioned to advance Monte Alto towards development. The combination of shallow, ultra-high-grade mineralisation, critical element diversity, and district-scale exploration upside offers a compelling narrative for investors and industry stakeholders alike.