Enova Mining Extends High-Grade Rare Earth Mineralisation at East Salinas

Enova Mining’s latest auger drilling results at East Salinas confirm significant near-surface rare earth element mineralisation, reinforcing the project’s potential as a large saprolite-hosted REE system in Brazil.

  • 14 auger holes drilled across East Salinas, Curioso, and River Trend
  • High-grade TREO intercepts up to 2,218ppm with strong NdPr ratios
  • Metallurgical tests show up to 30% NdPr and HREO recovery
  • Results support intrusive-derived REE mineralisation model
  • Further assay results pending, guiding next exploration phase
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Significant Rare Earth Grades Confirmed Near Surface

Enova Mining Limited (ASX:ENV) has bolstered its East Salinas Project in Brazil with new assay results from 14 auger drill holes targeting regional East Salinas, Curioso, and River Trend zones. The latest data, covering 11 holes with assays received so far, reveal multiple high-grade rare earth element (REE) intercepts within saprolite overlying the Medina Intrusive Granite Complex. Notably, intercepts include 15 metres at 766ppm total rare earth oxides (TREO) with 17% neodymium-praseodymium (NdPr) from surface, and 8 metres at 1,085ppm TREO with 16% NdPr starting from 2 metres depth.

These results extend Enova’s footprint of saprolite-hosted REE mineralisation, complementing earlier June intercepts that hit peaks of 2,218ppm TREO at 16% NdPr and 1,998ppm TREO at 27% NdPr. The grades and continuity observed reinforce the potential for a large, continuous saprolite REE system, consistent with Enova’s geological model of intrusive-derived mineralisation associated with the Medina Intrusive Granite Complex.

Auger Drilling Shapes Future Exploration Strategy

The regional auger drilling campaign, totalling 142.5 metres across 14 holes, provides critical first-pass coverage of the East Salinas target area. By delineating REE enrichment zones within weathered saprolite, the program helps distinguish mineralised from barren ground, enabling Enova to focus exploration efforts and capital on the most prospective zones. Assays from three holes remain outstanding, expected in late August, which will complete the initial dataset from these regional targets.

Enova’s CEO Eric Vesel highlighted the value of these results in refining the company’s understanding of REE distribution and continuity. The data will underpin follow-up resource delineation drilling, with further auger drilling planned after the ongoing Naked Hill exploration phase to test unassessed saprolite zones.

Metallurgical Testing Indicates Promising Recovery Rates

Complementing the assay data, metallurgical leach tests conducted by SGS Geosol Laboratory on saprolite samples from East Salinas show NdPr and heavy rare earth oxide (HREO) recoveries reaching up to 30%. These initial ionic adsorption clay (IAC) leach results suggest viable processing pathways for extracting critical rare earths from the saprolitic clays, a key factor for economic viability.

While these recovery rates are preliminary and require further validation, they align with Enova’s broader strategy to develop low-cost, scalable extraction techniques for saprolite-hosted REE deposits.

Brazilian Tenements in a Supportive Mining Jurisdiction

East Salinas’ tenements, fully granted and held by Enova Brasil Ltda, cover nearly 23,000 hectares in Minas Gerais, a tier-one mining jurisdiction. Brazil’s stable regulatory environment, skilled workforce, and robust infrastructure underpin the project’s long-term development potential. Enova’s local geological team has been instrumental in advancing exploration through detailed mapping, sampling, and validation.

Portfolio Advances Beyond East Salinas

Enova continues to progress other projects in its portfolio, including the Naked Hill REE project where a major auger drilling campaign is underway, the Coda project focusing on metallurgical studies for titanium and scandium, and the Charley Creek Project with ongoing process optimisation trials. Exploration at Lithium Valley projects also continues, with results pending.

These diverse assets position Enova to leverage multiple critical mineral opportunities aligned with global clean energy demand.

Bottom Line?

East Salinas assays confirm a robust saprolite-hosted REE system, but further drilling and metallurgical validation remain critical to define resource scale and economic potential.

Questions in the middle?

  • Will the pending assays from the remaining holes sustain the current grade and continuity trends?
  • How will metallurgical recovery rates evolve with expanded testing and pilot-scale trials?
  • What are the timelines and capital requirements for transitioning from exploration to resource delineation?