Eclipse Metals Hits a Green Light in Greenland: Grønnedal Resource Grows to 89Mt

In a major stride for Australia’s critical minerals scene – albeit several time zones and latitudes away – Eclipse Metals (ASX: EPM) has pulled back the curtain on a resource update at its Grønnedal rare earth deposit in Greenland that’s nothing short of transformational.

Announced to the ASX on Tuesday, Eclipse revealed an eye-watering 89 million tonnes (Mt) of rare earth mineralisation at an average grade of 6,363 parts per million (ppm) Total Rare Earth Oxides (TREO). That’s a seventy-fold increase on its maiden 1.18Mt estimate from 2024 – not a typo.

The Grønnedal deposit, part of the broader Ivigtût multi-commodity project, now boasts a hefty 567,600 tonnes of contained TREO, including high concentrations of the magnetic heavyweights: neodymium (Nd), praseodymium (Pr), dysprosium (Dy) and terbium (Tb) – the building blocks of electric motors and wind turbines.

“This is a transformational milestone for Eclipse and positions the Grønnedal REE deposit as a globally significant rare earths project,” said Executive Chairman Carl Popal, noting that all six historic diamond drill holes used in the upgrade ended in mineralisation. “We are only scratching the surface,” he added, hinting at significant upside still lurking beneath.

Indeed, the deposit remains open in all directions – a geologist’s version of Christmas. The updated estimate is based on recent analytical work and incorporates both shallow trenching and deeper historical diamond drilling, some of it dating back to 1951. The latest round of core analysis has extended the known mineralisation depth to about 200 metres, with geophysical data suggesting the carbonatite body could plunge well past 500 metres.

The grade, too, is nothing to sneeze at. While the industry often reports TREO grades in the sub-1,000 ppm range, Grønnedal clocks in at over 6,000 ppm. Notably, individual samples have returned values above 2%, putting it firmly in the high-grade territory globally. A 2,000 ppm cut-off was applied to the resource, consistent with standard economic modelling in the sector.

Aside from the geology, the strategic appeal of the project is compelling. With its Arctic latitude but temperate geopolitical climate, Greenland presents a secure, mining-friendly jurisdiction. Grønnedal also features deep-water access – a logistical bonus in the heavy freight world of rare earths.

No open-pit optimisation studies have yet been conducted, and metallurgical testing is ongoing, with results due by the end of 2025. However, the company believes the mineralogy is comparable to other significant REE producers like Mount Weld (Australia) and Bayan Obo (China). If those comparisons hold, Grønnedal could become a key western supplier of critical magnet materials at a time when geopolitical tensions are prompting a rethink of supply chains.

As Eclipse fast-tracks its drilling program, the company is also engaging with potential strategic partners in Europe and North America – a clear nod to the broader geopolitical stakes in securing REE sources outside of China.

For now, the resource is classified entirely as inferred – a technical way of saying “great start, but more drilling needed.” The update covers only about 6% of the mapped carbonatite complex, which stretches over several kilometres. The next steps involve expanding that footprint and, ideally, upgrading the resource confidence levels with additional core and RC drilling.

With the world scrambling for rare earths to power everything from Teslas to F-35s, Eclipse’s timing – and its Greenlandic outpost – might just be spot on. Investors will no doubt be watching closely as the next round of assays land and the company plots its way from explorer to strategic supplier.