Power Minerals Rare Earth Discovery Yields Record 3.53% MREO Grades

BY WILLIAM HADRIAN ON APRIL 8, 2026

Power Minerals Ltd

  • ASX Code: PNN
  • Market Cap: $40,714,942
  • Shares On Issue (SOI): 339,291,187
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Power Minerals Limited (ASX: PNN) has delivered exceptional drilling results from its Morro do Ferro Rare Earth Elements Project in Brazil, revealing some of the highest-grade magnetic rare earth oxide (MREO) concentrations ever reported globally. The Power Minerals rare earth discovery has uncovered astounding MREO grades of up to 35,332 ppm (3.53%) over 2 metres, positioning this asset as a potential game-changer in the critical minerals space.

Breakthrough MREO Results Redefine Project Economics

The latest findings from Power’s assessment of previous drilling data have revealed extraordinary concentrations of the four most valuable rare earth elements: Neodymium (Nd), Praseodymium (Pr), Dysprosium (Dy), and Terbium (Tb). These magnetic rare earth oxides account for more than 80% of the total REE market value, making them the key drivers of project economics.

Furthermore, the consistency of high-grade results across the deposit demonstrates exceptional mineralisation continuity. This remarkable achievement positions the Power Minerals rare earth discovery among the most significant findings in the global critical minerals sector.

Standout Drilling Highlights

Drillhole Interval Grade Key Features
MFSR-47 2m at 9-11m depth 35,332 ppm (3.53%) MREO Exceptional surface grade
MFSR-10 100.44m from surface 9,485 ppm (0.95%) MREO Includes 19.3m at 2.25% MREO
MFSR-04 100.2m from surface 6,103 ppm MREO Includes 21.35m at 1.44% MREO
MFSR-20 60.6m from surface 13,129 ppm (1.31%) MREO Consistent high-grade zone
MFSR-35 60.85m from surface 14,912 ppm (1.49%) MREO Including 30.9m at 2.10% MREO

“The Morro do Ferro project represents a remarkable opportunity to expand our understanding of the resource capabilities within the Poços de Caldas Alkaline Complex. With the exceptionally high concentrations identified at this site, Power Minerals stands poised to assert itself as a frontrunner in the rare-earth sector.” – Mena Habib, Managing Director

Understanding MREO: The Economics Behind the Discovery

Magnetic Rare Earth Oxides (MREO) represent the most economically significant subset of rare earth elements, comprising the four magnetic elements essential for permanent magnet production. In addition, these elements command premium pricing due to their critical role in the global energy transition.

The Critical Four Elements

The four magnetic rare earth elements drive the economic value of this exceptional discovery:

    • Neodymium (Nd2O3) – Essential for permanent magnets in wind turbines and electric vehicles

 

    • Praseodymium (Pr6O11) – Critical component in high-strength permanent magnets

 

    • Dysprosium (Dy2O3) – Enhances magnetic properties at high temperatures

 

    • Terbium (Tb4O7) – Vital for advanced magnet applications

 

These four elements are indispensable for manufacturing the permanent magnets that power the global energy transition. Unlike other rare earth elements, MREO commands premium pricing due to supply constraints and surging demand from renewable energy and electric vehicle sectors.

The exceptional MREO grades at Morro do Ferro are particularly significant because they represent direct revenue potential. While many rare earth projects focus on total rare earth oxide (TREO) grades, the concentration of MREO determines the real economic value.

Higher MREO grades translate to increased revenue per tonne of ore processed, fundamentally improving project economics. Consequently, this discovery positions Power Minerals to capture maximum value from the critical minerals boom.

Industry-Leading Grades Set New Benchmarks

Power’s analysis reveals that only 12% of the 555 samples analysed returned MREO values below 500 ppm, with the lowest recorded value still reaching 134 ppm. This consistency is remarkable compared to industry standards and demonstrates the robust nature of mineralisation across the deposit.

Furthermore, the grade distribution showcases the exceptional quality of the Power Minerals rare earth discovery when compared to established projects globally.

Competitive Grade Comparison

Project MREO Grade Cut-off Applied Company
Morro do Ferro Up to 35,332 ppm No cut-off Power Minerals
Caldeira Project 631 ppm 1,000 ppm TREO cut-off Meteoric Resources
Jupiter Deposit 383 ppm 1,000 ppm TREO cut-off Critica Ltd
Wolverine Open Cut 510-1,260 ppm 1,500 ppm TREO cut-off Northern Minerals

The comparison reveals a striking advantage: Morro do Ferro’s lowest MREO result (976 ppm in MFSR-10) exceeds the resource grades of established projects that apply significant cut-off grades. This grade consistency without applying any cut-offs suggests exceptional mineralisation continuity throughout the deposit.

Strategic Location and Development Advantages

Morro do Ferro enjoys several key advantages that enhance its development potential and distinguish it from typical rare earth exploration projects. However, the strategic positioning within Brazil’s established mining jurisdiction provides additional regulatory certainty.

Operational Benefits

The project benefits from multiple operational advantages:

    • Elevated topography with over 100 metres of relief for efficient open-pit design

 

    • Surface accessibility reducing infrastructure requirements

 

    • Manifesto de Mina title providing direct land ownership rights

 

    • Simplified permitting due to ownership structure

 

    • Proximity to infrastructure – 13km from Poços de Caldas, 200km from São Paulo

 

Near-Surface Mineralisation

Selected shallow auger holes confirm exceptional grades commence at surface, supporting potential low-cost extraction. For instance, these results demonstrate the immediate economic potential:

    • MFT-034: 9m at 17,473 ppm (1.75%) MREO from surface

 

    • MFT-055: 10m at 11,561 ppm (1.16%) MREO from surface

 

    • MFT-023: 10m at 6,454 ppm MREO from surface

 

What Makes This Discovery Truly Exceptional?

The current drilling has only partially constrained the deposit, leaving significant expansion opportunities that could materially increase the project’s scale and value. Consequently, the full potential of this Power Minerals rare earth discovery remains to be unlocked.

Key Growth Drivers

    • Open at depth – mineralisation extends beyond current drilling

 

    • Strike extensions possible to northwest and southeast

 

    • Auxiliary deposits potential alongside main orebody

 

    • Infill drilling opportunities in 250-480m traverse spacing gaps

 

The project sits within the Poços de Caldas Alkaline Complex, one of the world’s premier rare earth provinces. Notably, no other projects within the complex match Morro do Ferro’s grade or mineralogy, positioning it as the standout asset in this established REE district.

Power’s site inspection confirmed the main deposit’s strategic positioning along the crest of a steep hill with over 100 metres of topographic relief. This elevated position presents significant advantages for potential open-cut operations by lowering waste-to-ore ratios and simplifying mine design.

Investment Thesis: World-Class Discovery in Critical Minerals

Unique Value Proposition

Morro do Ferro represents a convergence of factors that rarely align in rare earth exploration. Furthermore, the combination of geological excellence and development advantages creates an exceptional investment opportunity:

    1. World-class MREO grades with no industry comparable at this scale

 

    1. Economic focus on the most valuable rare earth elements

 

    1. Development-ready topography and infrastructure access

 

    1. Expansion potential with limited exploration to date

 

    1. Strategic location in established REE province

 

Near-term Catalysts

Several upcoming milestones will drive value creation:

    • Completion of due diligence process and potential acquisition

 

    • Resource definition drilling program

 

    • Metallurgical test work optimisation

 

    • Expanded exploration targeting strike extensions

 

Market Context

The global rare earth market faces mounting supply chain pressures as nations seek to secure critical mineral resources for the energy transition. Projects capable of delivering high-grade MREO production will command premium valuations, particularly those with the development advantages demonstrated at Morro do Ferro.

In addition, the strategic importance of rare earth elements continues to grow as governments worldwide prioritise critical mineral security. This trend supports strong long-term demand fundamentals for high-quality discoveries like Morro do Ferro.

Power Minerals has positioned itself at the forefront of rare earth discovery with an asset that appears to set new industry benchmarks for MREO grades. The combination of exceptional mineralisation, strategic location, and significant expansion potential creates a compelling investment proposition in the critical minerals sector.

As the company progresses toward potential acquisition and resource definition, Morro do Ferro represents what could be a transformational asset in Power Minerals’ portfolio. The project’s unique grade profile and development advantages position it as a potential leader in the race to supply critical rare earth elements for the global energy transition.

Could Morro do Ferro Transform Your Investment Portfolio?

Power Minerals’ exceptional rare earth discovery at Morro do Ferro presents a compelling opportunity for investors seeking exposure to critical minerals essential for the global energy transition. With world-class MREO grades reaching 3.53% and significant expansion potential within Brazil’s premier rare earth province, this project could represent a transformational asset in the company’s portfolio. To explore how Power Minerals’ strategic position in the rare earth sector could benefit your investment strategy, visit www.powerminerals.com.au for comprehensive company information, project updates, and investor resources.

 

Stock Codes: ASX: PNN

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