Chilwa Minerals Rare Earth Exploration Results Confirm 47 REE Anomalies

Chilwa Minerals Confirms Rare Earth Potential Across 47 Anomalies with Promising Pathfinder Elements

Chilwa Minerals (ASX: CHW) has announced encouraging results from its extensive soil sampling program across all 47 geophysical anomalies previously identified during radiomagnetics surveys at its Lake Chilwa Critical Minerals Project in Malawi.

Extensive Soil Sampling Program Validates Multiple REE Targets

The company has completed analysis of 263 soil samples from 17 anomalous targets, complementing previous batches of 101 and 121 samples reported in January and May 2025 respectively. These Chilwa Minerals rare earth exploration results have confirmed the presence of rare earth elements (REEs) and pathfinder elements across all 47 anomalies, significantly enhancing the project's prospectivity for carbonatite-hosted REE mineralisation.

The geochemical signatures identified have enabled Chilwa to rank targets according to their potential, creating a strategic roadmap for subsequent diamond drilling programs. The anomalies extend over areas of up to 84 km² (averaging 2.6 km²) with a total footprint of 122 km² within the company's 866 km² license area.

"We are pleased to announce the completion of our initial soil geochemistry program, which covered all 47 geophysical anomalies identified during our radiomagnetics survey in mid-2024. The results have significantly increased our confidence in the potential discovery of REE mineralisation within our licensed area, located in a region already recognised for its Rare Earths prospectivity." – Cadell Buss, Managing Director, Chilwa Minerals

What Makes These Results Significant?

The soil geochemistry results indicate that areas delineated by the company's geophysical surveys are enriched in rare earth elements at surface, supporting the hypothesis of a substantial carbonatite-hosted REE system at depth.

The comprehensive multielement analysis has revealed distinct anomalies:

• One characterized by Light Rare Earths & Niobium
• Another by Heavy Rare Earths

This distinction is particularly important as Heavy Rare Earths are currently in even greater demand than Light Rare Earths in global markets, potentially enhancing the economic value of any future discovery.

Understanding Carbonatite-Hosted REE Deposits

Carbonatites are relatively rare igneous rocks composed of more than 50% carbonate minerals, typically formed through alkaline magmatic processes. These unusual geological formations often host significant concentrations of rare earth elements, niobium, and other critical minerals essential for modern technology.

What makes carbonatite deposits particularly valuable is their potential to contain both light and heavy rare earth elements in economic quantities. When compared to other REE deposit types, carbonatites often offer more favorable metallurgy, potentially simplifying extraction and processing.

The Lake Chilwa region sits within the Chilwa Alkaline Province, a well-documented geological zone known for its alkaline intrusions and carbonatite formations, making it a prime target for REE exploration.

Strategic Approach to Target Evaluation

Chilwa's methodical approach to target evaluation included:

1. Defining two REE element groups:

   • Light REE (LREE) – Pr, Nd, Gd, Eu, Sm, La, Ce
   • Heavy REE (HREE) – Dy, Er, Ho, Lu, Tb, Tm, Yb, Y

2. Identifying carbonatite system pathfinder elements:

   • LREE associates: Nb, Ta, U, Ge
   • HREE associates: Pb, Sc, Pd, Cs, Tl

3. Assessing broader mineral system indicators demonstrating hydrothermal alteration styles

This comprehensive analysis allowed the company to rank all 47 anomalies based on their prospectivity, with targets MPYTH005 and PHLTH002 emerging as the highest priority based on their geochemical signatures.

Diamond Drilling Program Underway

Following initial drilling at Mposa, the company has relocated operations to an anomaly in the Mpyupyu area. Results from ICPMS four-acid digest analysis of the first drill core are anticipated imminently.

The company is currently drilling at high-priority targets MPYTH004 and MPYTH005 in the Mpyupyu area, with Chilwa Minerals rare earth exploration results expected within the next one to two weeks.

Dual Focus Strategy Enhances Project Value

Chilwa is pursuing a twin, parallel strategy for the Chilwa Critical Minerals Project, with dedicated teams focused on both:

1. Heavy Mineral Sands – Late-stage exploration asset
2. Rare Earth Elements & Niobium – Early-stage exploration with significant upside potential

This dual approach allows the company to potentially advance a near-term development opportunity while simultaneously exploring for high-value REE deposits.

Investment Implications: Why Follow Chilwa Minerals?

Chilwa Minerals presents a compelling investment case for several key reasons:

1. Multiple Opportunities: The identification of 47 distinct anomalies provides numerous opportunities for discovery, significantly reducing single-target exploration risk.

2. Critical Minerals Focus: The project targets rare earth elements and niobium, both classified as critical minerals essential for clean energy transition and advanced manufacturing.

3. Favorable Geology: Located in the Chilwa Alkaline Province, the project area has the right geological setting for significant carbonatite-hosted REE deposits.

4. Systematic Exploration: The company's methodical approach to target ranking and evaluation demonstrates technical rigor and increases the probability of discovery.

5. Dual-Commodity Strategy: By pursuing both mineral sands and rare earth elements, Chilwa Minerals rare earth exploration results provide investors exposure to multiple critical mineral markets.

With diamond drilling results anticipated shortly and a clearly defined exploration pathway across multiple targets, Chilwa Minerals has positioned itself as a significant player in the rare earths exploration sector with substantial upside potential as the company progresses its systematic evaluation of these promising targets.

Ready to Invest in the Future of Critical Minerals?

Discover how Chilwa Minerals is systematically unlocking rare earth potential across 47 promising anomalies in Malawi. With diamond drilling underway and results expected soon, now is the time to explore this dual-focus critical minerals opportunity. Visit www.chilwaminerals.com.au to learn more about their comprehensive exploration strategy and how you can be part of this compelling investment opportunity in the growing rare earths sector.