Core Energy flags up to 2915ppm REE with initial sampling at Tunas in Brazil

The company will immediately begin a systematic auger soil sampling program to define drilling targets. Pic: Getty Images.
- First-pass sampling success for CR3 at Tunas rare earth project in southern Brazil
- Total rare earth oxide assays exceed 2000ppm with a peak value of 2921
- Systematic auger sampling program to begin immediately
Special Report: Core Energy Minerals recorded a high-grade hit of 2,921 parts per million total rare earth oxides (TREO) in initial sampling at its Tunas rare earths project in Brazil.
The first-pass reconnaissance sampling program flagged TREO assay results exceeding 2,000ppm, with a peak of 2,921ppm in residual soils.
The geophysical data shows the results are typically favourable for Brazilian REE deposits, validating radiometric anomalies in uranium, thorium and potassium, which are key pathfinder signals for identifying REE enriched regolith systems.
“These initial results from our Tunas project in Southern Brazil are extremely encouraging,” Core Energy Minerals (ASX:CR3) executive director Tony Greenaway said.
“We are seeing significant TREO results from our first-pass reconnaissance sampling campaign.
“TREO results over 2,000ppm and a peak of 2,915ppm at surface in a deeply weathered soil profile, as we are seeing at Tunas, is a great first result.”

Defining drill targets for testing
While the results are preliminary in nature, CR3 says they highlight the significant exploration potential of the Tunas project, particularly given the small portion of the tenement area tested in this first pass program.

“The team identified an area with good exposure of the soil profile in a roadside cutting on site, enabling CR3 to collect a representative channel sample across the residual profile,” Greenaway said.
“While these results are limited to the one exposure, mapping has revealed an extensive favourable parent basement lithology across much of the tenement, backed up by radiometric data, with well-developed residual regolith cover profile.
“We will be kicking off a systematic auger sampling program across the favourable basement area immediately in order to define drill targets for testing.”
This article was developed in collaboration with Core Energy Minerals, a Stockhead advertiser at the time of publishing.
This article does not constitute financial product advice. You should consider obtaining independent advice before making any financial decisions.
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