European Resources (ASX:ERE) has tripled its Korsnäs rare earth project exploration to 18–32 million tonnes at 0.8%–1.0% total rare earth oxides (TREO), up 190%.
The updated target follows the company’s phase two passive seismic surveying, which identified new target corridors north, south, and east of the historic Korsnäs mine and current Mineral Resource area in western Finland.
The exploration target is additional to European Resources’ April 2026 inferred mineral resource estimate of 15.4Mt at 1.0% TREO. The company cautions that the potential quantity and grade are conceptual in nature, with insufficient exploration completed to estimate a mineral resource.
The passive seismic component covers approximately nine kilometres of interpreted prospective structure, using a 400m down-dip projection and an assumed average true thickness of 7m. This generates an exploration target of approximately 8–15Mt at 0.8% to 1.1% TREO.
Known-zone projection component estimates approximately 10–17Mt at 0.7% to 0.9% TREO within existing geological wireframes to -400m reduced level.
“The passive seismic survey program has identified a series of new anomalies to the north, south, and east of the current mineral resource area,” Managing Director Jason Beckton says.
“These remain geophysical targets and will require drilling to convert to a mineral resource, but the successful testing of […] drill hole KR-316 gives us confidence that the method is a useful tool for identifying concealed mineralised structures beneath glacial cover.”
The company plans further surveying and drill testing of passive seismic targets across the 2026/2027 field season, subject to access, permitting, funding, and seasonal field conditions.
Deeper target drilling, including testing of down-dip and deeper structural positions, is planned for summer 2027. The proposed work program aims to determine whether any part of the Exploration Target can support future mineral resource estimation.
European Resources is an Australian‑based explorer focused on critical minerals, advancing its 100%‑owned Korsnäs rare earth project in Finland alongside a portfolio of precious and base metals projects in Slovakia.
Write to JC Villarba at Mining.com.au
Images: European Resources
