Critical Metals Corp. (Nasdaq: CRML) has released the first assay results from the 2025 drilling programme at the Fjord Deposit and Upper Fjord areas of the Tanbreez Rare Earths Project in Greenland.
The drilling was designed to extend known mineralisation and refine the geological model ahead of an updated Mineral Resource Estimate and mine planning studies. Early results confirm consistent rare earth grades across multiple zones and highlight the presence of strategic metals, including gallium, hafnium, cerium, and yttrium, reinforcing Tanbreez as a globally significant peralkaline-hosted rare earth system.
Tony Sage, CEO and executive chairman of Critical Metals, commented, “The 2025 deep diamond drilling results demonstrate consistent rare earth mineralisation across the Fjord and Upper Fjord areas. The results confirm the presence of Total Rare Earth Oxide mineralisation, including a significant heavy rare earth component, extending from the Fjord Deposit into the Upper Fjord area. These results are expected to contribute additional mineralised tonnage to the existing Hill and Lower Fjord deposits and further support the scale and continuity of the Tanbreez project.”
Key Results Highlights
- Consistent rare earth grades: Total Rare Earth Oxide (TREO+Y) grades range from 0.40% to 0.47%, with heavy rare earth oxides (HREO) comprising approximately 26–27% of TREO.+Y
- Strategic metals: Gallium oxide (~100 ppm), hafnium oxide (~350 ppm), yttrium oxide (~742 ppm), and cerium oxide (~1,630 ppm) are consistently present, together with zirconium (1.3%–1.97%), niobium, and tantalum, supporting the project’s multi-commodity potential.
- Mineralization extent: The Fjord and Upper Fjord areas remain open along strike and at depth, with mineralization confirmed to occur consistently close to surface and demonstrating strong lateral and vertical continuity.
- Resource growth potential: Results provide an important indication of potential for further resource growth.
- Upper Fjord extensions: Mineralized extends from drill hole K-24 northeast for at least 1.0 km of length, to a depth of more than 200 m true thickness above the Fjord Deposit.
A total of 20 diamond drill holes for 3,430m were completed in 2025, following 13 holes for 1,149.5m drilled in 2024. Drilling included vertical and angled holes designed to intersect sub‑horizontal mineralised layers and test strike extensions across the Lower and Upper Fjord areas.
A priority target of the 2025 programme focused on extending mineralisation encountered in hole K‑24, drilled in 2024, which returned 203.2m at 0.48% TREO+Y with ~27% heavy rare earth oxide. The reported 2025 results show TREO+Y grades ranging from 0.35% to 0.77%, with an average HREO composition of ~25.7%, observed across multiple drill holes within the kakortokite host rock.
Hole 25‑D09, drilled to 311m in Area B to assess reconnaissance potential, has returned encouraging results, and further drilling is now being planned for this zone.
Grade Summary
- Total Rare Earth Oxide + Yttrium (TREO+Y): ranges between approximately 0.35%–0.77%.
- Heavy Rare Earth Oxide (HREO) proportion: ranges between approximately 25–29% of TREO+Y.
- Strategic and associated elements: Gallium oxide (~98 ppm), hafnium oxide (~301 ppm), yttrium oxide (~637 ppm), and cerium oxide (~1,567 ppm) are consistently present, together with zirconium oxide (0.91%–3.4%), niobium (1,192ppm), and tantalum (91ppm).
Reporting and Methodology Notes
- TREO+Y represents the sum of La₂O₃, CeO₂, Pr₂O₃, Nd₂O₃, Sm₂O₃, Eu₂O₃, Gd₂O₃, Tb₄O₇, Dy₂O₃, Ho₂O₃, Er₂O₃, Tm₂O₃, Yb₂O₃, Lu₂O₃, and Y₂O₃.
- A minimum final intercept width of 2m downhole reported.
- No economic weighting has been applied.
- Grade cut-offs of 3,000ppm for TREO+Y have been used with no equivalence has been reported.
- All drilling and assay results, including both higher and lower grades, are reported to ensure balanced disclosure.
Critical Metals is awaiting the remaining assays from the 2025 field season and selective historic sampling. Once received and incorporated, the data will inform planning for the 2026 field season.
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