European Resources’ Korsnäs Tests Show Gravity Promise-But Flowsheet Questions Remain

Feb 16, 2026

Highlights

  • European Resources (ASX: ERE) reported preliminary metallurgy from its Korsnäs project in Finland, with gravity separation achieving 45–76% TREO upgrades on allanite and apatite composites, though magnetic separation showed no meaningful REE grade separation.
  • Tailings flotation successfully removed lead (~79–80% recovery) and sulphides (~85%), but 55–60% of REE-bearing minerals also floated, creating selectivity challenges that may complicate concentrate production and offtake negotiations.
  • Next-phase work moves to concentrate production (University of Oulu, GTK) and downstream processing tests at ANSTO, which will be critical for proving a credible route to separated oxides and unlocking value in Europe’s strategic REE supply chain.

European Resources Limited (ASX: ERE (opens in a new tab)) released preliminary screening metallurgy for its 100%-owned Korsnäs rare earth project (Finland) using coarse assay laboratory rejects plus tailings (TSF) material. Gravity separation on selected allanite- and apatite-dominant composites produced meaningful TREO upgrades (reported +45% and +76% in the heavy fraction, depending on sample type), while dry magnetic separation failed to meaningfully separate REE grades. TSF sulphide flotation achieved strong lead (79–80%) and sulphide (85%) recovery, but REE-bearing minerals also floated, complicating selectivity. Next work moves to concentrate production (University of Oulu, GTK) and downstream processing (Australian Nuclear Science and Technology Organization or ANSTO). Investor takeaway: useful early de-risking signals—not yet a flowsheet.

The “Heavy Fraction” Bump—Real, but Early

The most defensible positive here is gravity. On the allanite-dominant composite, ERE reports the heavy concentrate delivered a 45% TREO increase, with ~61% of REE reporting to the heavy + mid fractions (mass pull and recovery distribution matter as much as grade). On the apatite-dominant composite, the heavy concentrate delivered a 76% TREO increase, but only ~38% of REE reported to heavy + mid fractions—a reminder that “upgrade” can coexist with modest capture.

For investors, gravity as a front-end pre-concentration step can reduce downstream mass and cost if the recoveries hold under continuous conditions and larger sample sets. Today, this is bench-scale screening, not a pilot circuit.

Magnetics: A Useful Negative Result

Dry-induced roll magnet testing showed that most minerals were magnetically susceptible, with little REE-grade separation across fractions. That’s not sexy, but it is valuable: it shrinks the decision tree, potentially saving months and money.

Tailings: Lead Removal Works—But REE Selectivity Is the Trap

The TSF flotation results are a double-edged blade. Lead and sulphide removal looks strong (Pb recovery ~79–80; sulphides ~85%), yet the company also states ~55–60% of REE-bearing minerals reported to the float, and Table 4 in the release shows TREO recovery ~56% to concentrate with ~47% upgrade. Translation: flotation can collect REE phases, but making clean, penalty-minimizing concentrates (separating sulphides from REE-bearing minerals) may be difficult without reagent refinement, cleaning stages, and depressants.

Investors should also flag the commercial reality: lead/sulphur can mean smelter penalties, tighter environmental controls, and harder offtake conversations.

Where the Press Release Is Thin

Key omissions temper confidence:

  • Screening work used coarse assay rejects (potential representativity risk versus run-of-mine).
  • Assay methodology, accreditation, chain of custody, and umpire lab checks are not detailed at this stage.
  • Results are presented as selected sample types rather than deposit-wide variability.

What’s Notable for the Rare Earth Supply Chain

Korsnäs sits in the EU’s strategic orbit, but investors should keep one harsh truth in frame: a concentrate is not a separated oxide. Europe’s bottleneck remains industrial separation capacity (SX circuits and the chemical chain), although, arguably, outside China, some of the top emerging capabilities are in Europe (Solvay, Carester, SIM2, etc.). The real value inflection will be ANSTO’s downstream data: recoveries, impurities, residues, and a credible route to REO specs.

Top Holders

As of late 2025 and early 2026, the top shareholders of ERE include significant insider ownership, with Peter Nightingale holding 4.37% and Thomas Mann holding 3.02%. The top 18 shareholders hold 31.85% of the company, which focuses on mineral exploration in Finland and Slovakia. 

Citation: European Resources Limited, ASX Announcement, “Korsnäs Project advanced by metallurgical results”, 16 February 2026.

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By Daniel

Inspired to launch Rare Earth Exchanges in part due to his lifelong passion for geology and mineralogy, and patriotism, to ensure America and free market economies develop their own rare earth and critical mineral supply chains.

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European Resources' Korsnäs rare earth project shows 45-76% TREO upgrades via gravity separation, advancing Finland's strategic REE supply potential. (read full article...)

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