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Amargosa Bauxite-Gallium Project Mineral Resource Estimate

By: Brazilian Rare Earths via GlobeNewswire

October 03, 2025 at 08:30 AM EDT

SYDNEY, Oct. 03, 2025 (GLOBE NEWSWIRE) -- Brazilian Rare Earths Limited (ASX: BRE / OTCQX: BRELY) (‘BRE’) is pleased to announce the release of a Maiden Mineral Resource Estimate at the Amargosa Bauxite-Gallium Project, defining a large-scale, high-quality bauxite province with premium alumina grades and significant contained gallium.

BAUXITE MINERAL RESOURCE ESTIMATE
568 Mt at 29.8% Total Available Alumina (TAA), including:
Direct-Ship Bauxite: 98 Mt at 41.9% TAA Processed Bauxite: 191 Mt at 40.8% TAA
Benchmark-grade bauxite: Direct-ship bauxite product specifications aligned to the Guinean benchmark for metallurgical bauxite – attractive to international refiners seeking high-quality supply from a reliable, stable jurisdiction Low RSI advantage: Low reactive silica index (RSI) lowers caustic consumption, improves alumina recovery, and is well-placed for tightening refinery feed specifications High-confidence geology: Nearly 90% of the direct-ship resource within the Indicated Mineral Resource category – higher geological confidence to support mine-planning and economic studies Processing uplift at scale: 470 Mt at 27.3% TAA, 6.2% RSI processed to 191 Mt product at 40.8% TAA, 2.7% RSI – potential capital-efficient pathway to export-grade bauxite

GALLIUM MINERAL RESOURCE ESTIMATE
568 Mt at 47.7 ppm: 27,098,000 kg contained Gallium
Strategic gallium opportunity: Resource hosts 27,098,000 kg of contained gallium – which positions Amargosa for emerging strategic supply chains essential for semiconductors, high-performance permanent magnets and defence applications

(Indicated + Inferred)	In-Situ Mineral Resources
	Tonnes (m)	TAA (%)	RSI (%)	Ga (ppm)	Ga (‘000 kg)
Direct Ship Bauxite	98	41.9%	2.5%	51.6	5,046
Beneficiable Bauxite	470	27.3%	6.2%	46.9	22,053
Total	568	29.8%	5.6%	47.7	27,098

(Indicated + Inferred)	Processed 20+ Mesh Product
	Tonnes (m)	TAA (%)	RSI (%)	Ga (ppm)	Ga (‘000 kg)
Beneficiable Bauxite	191	40.8%	2.7%	n.a.	n.a.
Total	191	40.8%	2.7%	n.a.	n.a.

Capital-Efficient, Direct-Ship Logistics and Scalability

Leading jurisdiction: Amargosa located in Bahia, Brazil – supported by a mature regulatory framework, expedited licensing and permitting (2-3 years), and strong governmental support for mineral development
Capital-efficient direct-ship opportunity: With 98 Mt of direct-ship bauxite (41.9% TAA; 2.5% RSI), Amargosa can initiate operations in the Northern District, leveraging established highways to the Enseada export port (~160km). Established highways extend these logistics to the Central District.
Enseada port MoU: Partnership signed with Port of Enseada that covers mine-to-port export logistics for Amargosa bauxite
High-quality infrastructure: Low-cost, renewable hydropower, with high-voltage transmission line access; multiple export-port infrastructure options; skilled local workforce; paved multi-lane federal and state highways; and planned FIOL rail integration to underpin rail-to-port expansion capacity
Scalable growth pathway: 191 Mt processed bauxite (40.8% TAA; 2.7% RSI) provides large-scale bauxite expansion opportunities using the future FIOL railway and Porto Sul export port
Exploration upside: Significant upside bauxite potential with an Exploration Target, supported by 56,919 metres of historical Rio Tinto drilling, providing a pipeline for further resource upside
Strategic options: BRE advancing strategic options for Amargosa to unlock shareholder value - joint ventures, de-merger/spin-out or IPO - to focus on its world-class Rocha da Rocha high-grade rare earth province
Next steps: Scoping Study by end-2025, bauxite upgrade test-work to assess upside in product grades, and resource drilling growth upside and optimisation

BRE Managing Director and CEO, Bernardo da Veiga, said:

“Amargosa’s maiden mineral resource estimate defines a large-scale, high-quality bauxite province with premium alumina grades and low reactive silica - a key advantage as global alumina refineries prioritise higher-quality bauxite specifications from reliable, stable jurisdictions.

With direct highway access to bulk-export logistics in a Tier-1 jurisdiction, we see a clear path to an early, capital-efficient direct-ship bauxite operation with the potential to scale to higher production via a large-scale processed bauxite opportunity. A near-term Scoping Study will map these exceptional development pathways and support long-term value creation options for Amargosa.”

The complete news release can be found here.

Contacts
Bernardo Da Veiga, Managing Director and CEO
investors@brazilianrareearths.com
www.brazilianrareearths.com
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