- 01Maiden Ivigtut MRE: 4.87 Mt inferred, hafnium-led.
- 02Grades: 188 ppm HfO2, 61 ppm Ga2O3, 147 ppm Y2O3, 3380 ppm Zr.
- 0360 ppm HfO2 cut-off; near Gronnedal RE.
Eclipse Metals (ASX: EPM) has announced a maiden inferred mineral resource estimate (MRE) for the Ivigtût mine in south Greenland, defining a hafnium-led critical minerals resource in the immediate vicinity of the historical open-pit cryolite mine.
The MRE sits at 4.87 million tonnes grading 188 parts per million hafnium dioxide, 61ppm gallium oxide, 147ppm yttrium oxide, and 3,380ppm zirconium.
Reported at a 60ppm hafnium dioxide cut-off, that equates to approximately 917 tonnes hafnium dioxide, 297t gallium oxide, 714t yttrium oxide, and 16,454t zirconium.
Hafnium oxide was selected as the controlling cut-off parameter as it is interpreted to be the dominant contributor to the potential recoverable value of the mineralised system under preliminary conceptual price, recovery, and payability assumptions.
Multi-Commodity Dimension
Ivigtût sits approximately five kilometres west of Eclipse’s 208Mt Grønnedal rare earths deposit, which one of the largest rare earth discoveries in the North Atlantic region.
Grønnedal’s Inferred resource is currently 89Mt at 6,363ppm total rare earth oxides (TREO) for 567,600t TREO using a 2,000ppm cut-off.
“This maiden Ivigtût MRE is an important step in repositioning one of the world’s most significant historical cryolite mines as a modern critical-minerals opportunity,” executive chair Carl Popal said.
“The next phase of work will focus on mineralogy, liberation, and metallurgical assessment to better understand the mineral hosts and potential recovery pathways.”
Critical Minerals Deposit
The Ivigtût project area includes the Ivigtût critical minerals deposit and the globally significant Grønnedal rare earths deposit.
It is accessible year-round through a port facility located adjacent to Eclipse’s accommodation and office infrastructure.
In-situ gallium, hafnium, and yttrium mineralisation had not been identified at the project until 2025, when Eclipse completed a diamond drilling campaign totalling 176 holes for 9,673 metres.
Bulk sampling of broken stockpiles at surface in 2023 confirmed an average gallium grade of 39.2ppm while elevated levels of gallium, hafnium, yttrium, and zirconium support the interpretation of a fractionated rare metal-enriched granite system.
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