Eclipse confirms high-value, coarse-grained rare earths at Grønnedal, backed by an efficient processing pathway

Eclipse Metals Limited (ASX: EPM) (Eclipse or the Company) is pleased to confirm that its Grønnedal rare earth elements (REE) Project in southwest Greenland continues to solidify its position as a strategically important and globally significant source of REE. The Project metrics are supported by robust scientific data and including benchmarked mineralogical results.

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Project Highlights:

• Dominant synchysite, bastnasite and monazite mineralogy - ideal for Nd-Pr permanent magnet feedstock.
• Coarse-grain size of key REE minerals with up to 54% liberation, supporting low- cost, conventional flotation pathways.
• The defined resource of 89Mt represents approximately 6% of the carbonatite body, with extensive growth potential.
• Niobium ~4,670ppm, Yttrium ~777ppm, and HREE credits enhance the Project’s overall economics.
• Tier-1 Greenland location with deep-water access and no uranium permitting constraints.
• Mineralogical studies provide a strong foundation for upcoming metallurgical and process design work.

A recent mineralogical study completed by SGS Canada has confirmed the presence of high-value rare earth minerals, including Synchysite, Bastnasite and Monazite – highly sought-after hosts of magnet rare earth elements (Nd, Pr, Dy, Tb).

The recent mineralogical assessment returned significantly elevated niobium grades, ranging from <40ppm to 4,670ppm, and yttrium values ranging from 39ppm to 777ppm (refer Appendix 1), highlighting the polymetallic nature of the mineralisation and its potential for enhanced downstream value capture.

Both elements are increasingly sought after for superconductors, defence alloys, and advanced electronics, further elevating Grønnedal’s importance within the global critical minerals ecosystem.

Importantly, the test work confirms that the mineral assemblage is highly amenable to conventional processing, aligning with proven flowsheets successfully applied at other globally recognised REE operations, including Mountain Pass (USA) and Mount Weld (Australia).

Commenting on the SGS mineralogical results, Eclipse Metals Executive Chairman Carl Popal said:

“The Grønnedal REE complex continues to deliver compelling results that reinforce its emerging position as a globally strategic rare earths project. With 89 million tonnes now defined, the combination of scale, favourable mineralogy, coarse grain size and demonstrated processability sets Grønnedal apart as one of the few Western rare earth deposits with a clear pathway toward scalable development.

“The polymetallic nature of the mineralisation, combined with high liberation rates confirmed through advanced mineralogical studies, supports the potential for efficient recovery using well- established processing routes, further strengthening Grønnedal’s relevance to EU and North American critical minerals supply chains.

“Eclipse remains committed to responsible and transparent development in Greenland while advancing the project with a disciplined focus on value creation and global supply chain diversification,”

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