Eclipse Metals Confirms Extensive High-Grade Rare Earth Mineralisation at Grønnedal, Greenland

• All five drillholes intersect broad mineralisation from surface
• Significant intervals up to 195m at over 6,000ppm TREO
• Nd2O3 plus Pr2O3 exceed 30% of TREO in key zones
• Supports a shallow-dipping higher-grade zone consistent with existing resource
• Uranium levels remain well below Greenland’s regulatory threshold

Broad High-Grade Rare Earth Zones Confirmed from Surface

Eclipse Metals Ltd (ASX:EPM) has delivered a significant boost to its Greenland rare earth ambitions with the release of assay results from its 2025 diamond drilling program at the Grønnedal Rare Earth Project. All five drillholes intersected extensive rare earth mineralisation from surface to end of hole, with intervals ranging from 89m to 195m grading above 1% Total Rare Earth Oxides (TREO) in multiple zones.

Notably, drillhole GD001 returned 195m at 6,268ppm TREO from surface, while GD004 yielded 114.4m at 6,883ppm TREO. These are substantial intercepts by any measure, reinforcing the deposit’s scale and grade continuity within the Grønnedal carbonatite system.

Strong Magnet Rare Earth Profile Highlights Strategic Value

The mineralisation exhibits a compelling magnet rare earth element signature, with neodymium oxide (Nd2O3) and praseodymium oxide (Pr2O3) comprising over 30% of TREO in principal intervals. These elements are critical for high-performance permanent magnets used in electric vehicles, wind turbines, and advanced defence technologies.

Peak assays reached up to 2.84% TREO, including a standout 2m interval at 2.7% TREO from 116m in GD002. Eclipse’s Executive Chairman Carl Popal emphasised that the results “further support the continuity of rare-earth mineralisation” and underscore Grønnedal’s strategic relevance amid growing global efforts to diversify critical mineral supply chains beyond China.

Validation of Existing Resource and Geological Model

The drilling program, comprising 705 metres across five HQ diamond holes, was designed to test the central portion of the carbonatite complex. The results align well with the current JORC 2012 inferred mineral resource of 89 million tonnes grading 6,363ppm TREO, validating geological continuity and supporting ongoing resource modelling.

Geological observations reveal a large, shallow-dipping higher-grade zone extending from surface to depth, consistent with historical drillholes that returned grades between 0.9% and 2.02% TREO. Bastnasite remains the primary rare-earth-bearing mineral, with mineralisation characterised by alternating calcite and siderite-rich carbonatite zones overprinted by hematite and magnetite.

Importantly, uranium concentrations average just 4.16ppm, well below Greenland’s 100ppm statutory threshold for non-uranium mineral resource activities, easing regulatory concerns and positioning Grønnedal favourably within Greenland’s mining framework.

Ongoing Technical Work and Strategic Engagement

Eclipse is continuing metallurgical and beneficiation studies, building on earlier promising magnetic separation test results that showed over 90% rare earth recovery to magnetic fractions, as reported in February 2026. These advances are crucial for optimising downstream processing and unlocking the deposit’s economic potential.

Further technical work is required before economic extraction or resource upgrades can be confirmed, but the company is actively progressing strategic discussions to position Grønnedal within long-term critical minerals supply chains.

Bottom Line?

While the drilling confirms Grønnedal’s rare earth continuity and grade, the path to economic extraction hinges on upcoming metallurgical results and resource updates.

Questions in the middle?

• How will ongoing metallurgical studies impact the economic viability of Grønnedal?
• What are the implications of the strong Nd-Pr magnet rare earth profile for market positioning?
• Could future drilling extend the shallow-dipping higher-grade zone beyond current boundaries?