Sulista Rare Earth District Grows to 17 km Strike

Rhea-AI Summary

Brazilian Rare Earths (ASX: BRE / OTCQX: BRELY) reports exploration success at Sulista, expanding the district to a >17 km strike and confirming Sulista East as a >1 km, >230 m vertical anchor deposit. Over 4,000 m diamond drilling plus geophysics and auger work support a maiden JORC MRE expected mid-2026.

Key assay highlights include up to 16.7% TREO, 28,295 ppm NdPr, and significant Nb, Sc, Ta and U grades; a new +10,000 m drill program is underway across multiple growth corridors.

Positive

• District strike expanded to 17 km, increasing exploration scale
• Sulista East defined over >1,000 m strike and >230 m depth
• High-grade assays up to 16.7% TREO and 28,295 ppm NdPr
• Multiple mineralised centres (Sulista East, Outcrop Ridge, Sulista West) supporting hub-and-spoke strategy
• Maiden JORC Mineral Resource Estimate targeted mid-2026

Negative

• Exploration results are early-stage; maiden JORC MRE not yet published
• Large upcoming +10,000 m drilling program implies higher near-term capital expenditure
• Mineralisation remains open; economic extraction and metallurgical performance unproven
• No production timeline or economic study provided yet to demonstrate project viability

SYDNEY, March 11, 2026 (GLOBE NEWSWIRE) -- Brazilian Rare Earths Limited (ASX: BRE / OTCQX: BRELY) (‘BRE’) announces new exploration results at the Sulista Project, located approximately 80 km southwest of Monte Alto in Bahia, Brazil.

The latest exploration campaign has delivered excellent results across multiple targets, materially expanding the Sulista mineralised footprint and reinforcing Sulista East as the anchor deposit within a rapidly growing district-scale rare earth development opportunity.

Sulista East extends beyond 1 km strike, district growth corridors expand to 17 km

• BRE’s prior release on 17 September 2025 established Sulista as a +10 km strike high-grade rare earth district with multiple mineralised corridors
• Since that announcement, BRE has completed over 4,000 m of exploration diamond drilling at Sulista East, together with airborne geophysics, auger drilling, geological mapping and regional prospecting across the large-scale district
• The latest exploration results materially enhance the high-grade district architecture, extending Sulista’s target exploration strike to more than 17-kilometres, and further underpin a maiden JORC-compliant Mineral Resource Estimate anticipated in mid-2026
  
  

Sulista East: Strike doubles and mineralised horizons expand

• Sulista East has now been defined over more than 1,000 metres of drill-tested strike and to depths exceeding 230 metres below surface, with multiple stacked mineralised horizons and true thicknesses of up to 40 metres. Mineralisation remains open in both directions along strike and at depth
• Step-out drilling has materially extended the high-grade bedrock system, with JITDD0059 intersecting multiple broad parallel mineralised zones totalling more than 40 metres of cumulative true thickness
• Highlights for step-out drilling include grades of up to 11.8% TREO, with elevated magnet rare earth and critical mineral values up to 26,846 ppm NdPr, 1,911 ppm DyTb and 7,839 ppm Y₂O₃
• Shallow rare earth mineralisation in both regolith and bedrock continues to return strong results, including 10.4 m at 5.5% TREO from 18.7 m (JITDD0051), 14.0 m at 4.2% TREO from 37.0 m (JITDD0053), and 24.0 m at 3.7% TREO from 14.0 m (JITDD0057)
• Sulista South has emerged as a major southern extension to the ~7.5 km Sulista East trend, supported by large-scale magnetic and radiometric anomalies and pathfinder auger results, with a new +10,000 metre diamond drilling program now underway
  
  

Outcrop Ridge: Drilling confirms a second high-grade centre within the Sulista district

• Drilling at Outcrop Ridge has confirmed a second high-grade centre within the Sulista district, with high-grade mineralisation extending from surface outcrops into underlying bedrock
• Outcrop Ridge lies along strike from previously reported Sulista West high-grade REE-Nb-Sc-Ta-U mineralisation. Together, Sulista West and Outcrop Ridge now define a second high-grade centre advancing in parallel with Sulista East
• Drilling highlights include ultra-high-grade rare earth grades of up to 16.7% TREO with 28,295 ppm NdPr, 1,910 ppm DyTb and 14,599 ppm Y₂O₃
• Drill hole VR3DD0004 returned 34 m at 3.6% TREO from 2 m, including 7 m at 11.0% TREO and 3 m at 15.7% TREO, demonstrating vertical continuity from surface and highlighting the fertility of the broader Sulista West trend
• Significant critical mineral grades: Assays up to 4,927 ppm niobium oxide (Nb₂O₅), 197 ppm scandium oxide (Sc₂O₃), 217 ppm tantalum oxide (Ta₂O₅), and 2,262 ppm uranium oxide (U₃O₈)

Figure 1: Sulista District - Sulista East, Outcrop Ridge + Sulista West
plus 7 km North Expansion Corridor and Southern +10,000 m Drilling Corridor¹

* Denotes previously reported exploration result

Sulista North: A new large-scale exploration growth corridor 

• Sulista North has expanded the district footprint by more than 7 km northwards and represents a major new regional growth corridor, with ultra-high-grade surface mineralisation and intense geophysical vectors indicating proximity to fertile hard-rock source zones
• Field-based follow-up of airborne geophysical targets led to the discovery of an ultra-high-grade chevkinite-bearing outcrop, with grab sample R942 returning 19.2% TREO, together with exceptional critical mineral grades of 27,365 ppm Nb₂O₅, 2,643 ppm Ta₂O₅ and 8,389 ppm U₃O₈
• Pathfinder auger drilling intersected high-grade REE-Nb-Sc-Ta-U mineralisation, including grades of up to 12.6% TREO, 19,309 ppm NdPr, 1,835 ppm DyTb, 6,730 ppm Y₂O₃, 4,361 ppm Nb₂O₅, 170 ppm Ta₂O₅, 314 ppm Sc₂O₃ and 1,195 ppm U₃O₈ in hole STU1610, indicating potential proximity to a high-grade bedrock source
• Additional northern targets include multiple mineralised surface samples and shallow auger anomalies distributed across a broad corridor, reinforcing BRE’s view that Sulista is evolving into a repeatable, district-scale mineral system

Brazilian Rare Earths’ CEO and Managing Director, Bernardo da Veiga, commented:

“Sulista is advancing from discovery into delineation of a high-grade, scalable rare earth district, now extending over 17-kilometres of strike.

Sulista East has grown to more than one kilometre of drill-tested strike and beyond 230 metres vertically, confirming a large, continuous anchor deposit with exceptional growth potential to the south.

At the same time, new drilling at Outcrop Ridge, together with earlier results at Sulista West, confirms that high-grade mineralised centres are repeating across the district. Sulista North and Sulista South significantly expand our pipeline of drill-ready exploration growth corridors.

Together, these results strengthen the basis for our near-term scoping study and support our hub-and-spoke development strategy across the Rocha da Rocha Province.”

A link to the full release can be found here.

Contacts

Bernardo Da Veiga, Managing Director and CEO

investors@brazilianrareearths.com
www.brazilianrareearths.com

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1 Refer to ASX Announcements dated 6 June 2024 (Original ASX Announcement) for details of previously reported exploration results. BRE is not aware of any new information or data that materially affects the information included in the Original ASX Announcement

A photo accompanying this announcement is available at https://www.globenewswire.com/NewsRoom/AttachmentNg/c7437de7-0a6f-4dc2-acc7-f15b9e721622

FAQ

How large is the Sulista district after the March 11, 2026 BRELY update?

The Sulista district now extends to more than 17 kilometres of target strike. According to the company, expanded drilling, airborne geophysics and auger work increased the mapped mineralised corridors and supported multiple repeatable high-grade centres across the district.

What high-grade rare earth results did BRELY report at Sulista East and Outcrop Ridge?

Assays include up to 16.7% TREO and 28,295 ppm NdPr at Outcrop Ridge and zones to 11.8% TREO at Sulista East. According to the company, these results show multiple stacked horizons, shallow continuity and strong critical-mineral values.

When does BRELY expect a maiden JORC Mineral Resource Estimate for Sulista?

BRELY targets a maiden JORC-compliant Mineral Resource Estimate in mid-2026. According to the company, recent drilling (>4,000 m) and geophysical work underpin the planned mid-2026 MRE milestone.

What follow-up drilling programs did Brazilian Rare Earths (BRELY) announce for Sulista?

A new +10,000 metre diamond drilling program is underway, focused on Sulista South and growth corridors. According to the company, this program follows step-out results and aims to delineate the expanded high-grade mineralised systems.

What critical minerals besides TREO did BRELY report at Sulista that matter to investors?

Significant critical-mineral grades reported include Nb, Sc, Ta and U, for example up to 4,927 ppm Nb2O5 and 197 ppm Sc2O3. According to the company, these results indicate multi-element potential across the Sulista district.