Critical Metals Secures 92.5% Stake in Greenland's Massive Tanbreez Rare Earth Project
Shares surge as regulatory clearance in Greenland grants a Western mining developer control over one of the world's largest defense-critical heavy rare earth deposits, shifting the global geopolitical supply chain.
The Western world’s relentless quest to wrest control of the global rare earth supply chain just hit a massive, icy milestone. Greenland’s ministry for mineral resources and business has officially approved the indirect transfer of the mining license for the sprawling Tanbreez project, clearing the path for Critical Metals Corp. (Nasdaq: CRML) to seize a commanding 92.5% controlling interest in the asset. With the regulatory overhang effectively shattered, the legal license itself remains securely held by Tanbreez Mining Greenland A/S, while European Lithium (ASX: EUR) steps back to retain the remaining 7.5% minority stake. Wall Street clearly loved the clarity, sending shares of Critical Metals Corp. (NASDAQ: CRML) surging 23.6% in pre-market trading to hit $11.46 per share, briefly gifting the development-stage miner a hefty $1.4 billion market capitalization.
For industry professionals, Tanbreez is far more than just a promising patch of dirt at Killavaat Alannguat in southern Greenland. It is widely regarded as one of the largest undeveloped heavy rare earth deposits anywhere on the planet outside of China. A preliminary economic assessment published in March 2025 slapped a roughly $3 billion valuation on the project, anchored by a staggering 4.7 billion tonne resource. Digging into the specifics, the resource base boasts 45 million tonnes grading 0.40% total rare earth oxides, with a highly lucrative 27% of that mix comprising heavy, defense-critical rare earths like dysprosium and terbium. Adding fuel to the fire, independent metallurgical testing completed just last month in March 2026 achieved a 2.96% refined concentrate, representing a massive 40% improvement over historical test work from 2016 and significantly juicing the project’s future economic forecasts.
The geopolitical chessboard is practically vibrating at the news. With the rare earth market already staring down a projected 10,000-ton supply shortfall, securing an independent Western supply of magnet metals has become an obsession for international superpowers. The Trump administration previously discussed taking a direct stake in Critical Metals Corp. (Nasdaq: CRML) to secure domestic supply lines, and the project easily qualifies for up to $120 million in highly coveted financing from the United States Export-Import Bank. By securing full strategic and operational control, the company has transformed a speculative dream into a rapidly de-risking geopolitical counterweight against Chinese market dominance.
Execution is now the name of the game. Armed with board approval for a $30 million acceleration program, the company is aggressively fast-tracking its engineering and infrastructure efforts. Market analysts are already circling key upcoming catalysts on their calendars, most notably the anticipated pilot plant operations slated for May 2026 and a massive 150-tonne bulk sample program following shortly after in June 2026. The phased production strategy targets an initial output of 85,000 tonnes of rare earth oxides annually, eventually scaling to a staggering 425,000 tonnes.
To guarantee that the raw materials actually make it into Western manufacturing lines, Critical Metals Corp. (Nasdaq: CRML) has been busy building an impenetrable moat of alliances. The company cemented a strategic co-development partnership with GreenMet last year and followed up in January with a rock-solid, 10-year offtake arrangement directly tied to the Louisiana processing facility operated by Ucore Rare Metals Inc. (TSXV: UCU). Paired with the ongoing construction of a multi-use storage and pilot facility in Qaqortoq, Greenland, the company is no longer just talking about rewriting the rare earth supply chain, they are actively pouring the concrete to do it.
Sources
- Critical Metals Corp. Official Press Releases "Greenland Government Approves Transfer of Final 50.5% of Tanbreez, Taking Critical Metals Corp. to 92.5% Ownership" (Released April 17, 2026).
- Mining.com "Critical Metals stock surges after taking full control of Greenland rare earth project" (Published April 17, 2026).
- Investing.com Market Updates "Critical Metals reports 40% improvement in rare earth concentrate grade" (Published March 31, 2026).
- Reuters "Trump administration mulls stake in Greenland rare earth miner" (Published October 5, 2025).