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Eclipse Metals examines historical carbonatite complex drill core for rare earth elements

The Ivittuut Project’s Gronnedal-lka carbonatite complex is recognised as one of the prime rare earth elements targets in Greenland.

Eclipse Metals - Eclipse Metals examines historical carbonatite complex drill core for rare earth elements
Carbonatite Breccia with large carbonate fragments and the Gronnedal settlement in the background

Eclipse Metals (ASX:EPM) Ltd continues to assess historical diamond drill core from a key carbonatite deposit within its Ivittuut Project in Greenland. 

The multi-element exploration company has identified 750 metres worth of drill core from the Gronnedal-lka carbonatite area that has not been systematically assayed for rare earth element (REE) mineralisation. 

Earlier this year, the ASX-lister recorded as much as 34,400 parts per million (ppm) total rare earth elements (REE) from grab samples at the Gronnedal-lka deposit. 

In a bid to better define the area’s REE prospectivity, Eclipse has shipped samples from the diamond drill core to Australia for laboratory analysis. 

Examination underway

As it continues to explore the Ivittuut Project, the world’s largest and only known source of naturally occurring Cryolite, Eclipse is focused on realising the full potential of previous exploration, including historical drilling activity. 

Historical mineral exploration included about 19,000 metres of diamond drilling, with the drill core stored in a Greenland government facility, obliterating the need for more drilling in the short term and providing material to be re-logged, sampled and assayed.

Six diamond holes, covering a combined 750 metres, were drilled over 50 years ago within the Gronnedal-lka carbonatite intrusive, where much of the core remains uncut and untested.

The core, which has been preliminarily examined by the Eclipse Metals (ASX:EPM) Greenland office administrator and a consulting geologist, was found to be in good condition and well catalogued.

Ultimately, this will enable Eclipse personnel to readily identify the drill holes of initial interest and to collect samples from selected sections for analysis in Perth.

Of particular interest is the core from the six holes drilled into the carbonatite intrusive, where historical exploration has identified anomalous rare earth element content in dolerite dykes intruding the carbonatite.

The company has collected samples for preliminary testing and intends to cut and assay all the core at a later date utilising appropriate QA/QC protocols.

Overall, Eclipse has identified the potential for untapped rare earth, high-grade quartz, cryolite, siderite, sphalerite and carbonate material at its Ivittuut Project.

This area has not been systematically explored for other commodities, including the REE mineralisation of the carbonatite complex, which has been well noted in academia.

Ivittuut and the Gronnedal-Ika complex


Eclipse’s wholly-owned Ivittuut Project in southwest Greenland, hosts a power station, fuel supplies and local traffic to support mineral exploration.

The Gronnedal-lka carbonatite complex sits less than 10 kilometres from Ivittuut and only 5 kilometres from the port of Gronnedal.

This complex is also one of the 12 larger Gardar alkaline intrusions in Greenland and is recognised as one of the prime REE targets in the northern country.

Interestingly, the area contains the only known readily accessible source of carbonate rock in Greenland, which could be suitable for neutralising acid mine and process water.

REE occurs throughout the carbonatite complex, especially in late-stage veins, where it occurs as various strontium REE carbonate minerals.

Europium has been recorded from the whole intrusion with several times greater than average for rocks elsewhere in the Gardar Province and many times more than normally found in carbonatite.

In addition, extensive faulting and fracturing associated with the intruding carbonatite are considered to have mobilised highly mineralised fluids extending into the surrounding rocks, which has implications for further REE enrichment during alteration processes.

Eclipse maintains it will report further details on the samples and laboratory analysis in due course.

Quick facts: Eclipse Metals


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