Greenland's Rare Earths: The Security Pact That Shook Critical Minerals

A security pact between Greenland and the United States, announced around September 21, 2026, sent a ripple through critical minerals equities. Critical Metals (CRML) surged 38% and then another 35% on September 21st, driven by the perception that the deal brings Greenland's rare earth deposits, especially the Tanbreez opportunity, firmly into play. This development immediately refocused attention on the strategic importance of North American critical mineral supply. The market reaction highlights a fundamental anxiety: the West's reliance on a single, dominant supplier for processed rare earth elements. Greenland, an autonomous territory within the Kingdom of Denmark, holds significant undeveloped rare earth resources. A security agreement with the US signals a political will to unlock these resources, potentially offering a new, geopolitically aligned source for these essential materials.

The Mechanism of Rare Earth Supply

Rare earth elements, a group of seventeen chemically similar metallic elements, are not inherently rare in the earth's crust. Their scarcity lies in their economic extractability and, more critically, in the complex and environmentally challenging process of separating them into individual oxides. These elements often occur together in mineral deposits, and their similar chemical properties make isolating them from one another difficult and expensive. The process typically involves crushing and grinding ore, followed by flotation to create a concentrate. This concentrate then undergoes a multi-stage solvent extraction process, where different organic solvents selectively bind to specific rare earth ions, allowing for their separation. Each stage is precise, requiring vast quantities of reagents and generating significant waste. The difficulty of this separation, coupled with the capital intensity and environmental permitting hurdles, creates a bottleneck in the global supply chain, where a handful of facilities, predominantly in China, control the vast majority of processing capacity. A new source of rare earth concentrate is a start, but without new, Western-aligned processing capacity, the bottleneck persists.

Companies Operating in This Part of the Sector

The recent Greenland development has cast a spotlight on companies engaged in rare earth and other critical mineral projects. Critical Metals (CRML), for example, saw its stock jump on the news, reflecting market enthusiasm for its potential involvement in Greenlandic projects, specifically the Tanbreez project, which is known for its heavy rare earth deposits. The company also has a low-waste refinery plan in Romania, which could address some of the processing bottleneck issues if it reaches fruition. USA Rare Earth, Inc. (USAR) operates the Round Top project in Texas, which is a significant heavy rare earth and critical minerals deposit. The company is developing a full mine-to-magnet supply chain in the United States, aiming to produce separated rare earth oxides and then permanent magnets. This integrated approach seeks to bypass the processing bottleneck entirely. NioCorp Developments Ltd. (NB) is focused on its Elk Creek project in Nebraska, which aims to produce niobium, scandium, and titanium, along with several rare earth elements. NioCorp's strategy is to supply multiple critical minerals from a single, North American source, diversifying away from overseas dependencies. In the lithium space, Standard Lithium Ltd. (SLI) is advancing its Smackover brine projects in Arkansas, utilizing direct lithium extraction (DLE) technologies. A positive Preliminary Economic Assessment (PEA) for its Texas Lithium Project was recently posted by Equinor, highlighting the potential for DLE to unlock new domestic lithium sources. Atlas Lithium Corporation (ATLX) is developing hard rock lithium projects in Brazil, providing a different geographic focus for lithium supply. ioneer Ltd (IONR) is focused on the Rhyolite Ridge Lithium-Boron Project in Nevada, a unique co-production of lithium carbonate and boric acid from a single deposit. American Battery Technology Company (ABAT) is engaged in lithium-ion battery recycling and the development of primary lithium resources in Nevada. The company recently reported record revenue growth in Q4 2026, but also faces new export threats.

American Lithium Minerals, Inc.

American Lithium Minerals, Inc. (AMLM) is an exploration stage company, trading over the counter, with a stated focus on lithium and boron properties in Nevada. The company was incorporated in Nevada in March 2005. Its primary asset is the Sarcobatus Lithium property, which comprises 1,780 acres of mining claims in Central Nevada. This project has been the focus of the company's lithium exploration activities since 2009. AMLM also states an intention to expand its exploration and acquisition for mineral properties worldwide and is developing the use of Real World Asset Tokens to provide capital for mining. The company's most recent substantive filing, a Regulation A offering circular qualified by the SEC on February 4, 2026, covers up to 80,000,000 units, each including one share of common stock and a warrant to purchase 1.5 shares. The warrants are exercisable at $0.05 per share until December 31, 2028, potentially leading to the issuance of up to an additional 120,000,000 shares. The company has not yet established a proven or probable reserve for its Sarcobatus project, nor has it secured any binding offtake agreements for future production. The offering circular details that the company does not own any real property such as land or buildings. American Lithium Minerals has previously acquired and divested cobalt, nickel, and graphite prospects in Central Nevada, and rare earth elements projects in Kingman, Arizona, and Southeast Illinois. Its long-term vision, as described in filings, is to create an interoperable ecosystem where assets can be securely acquired, transparently tokenized, and efficiently traded.

What to watch

Investors should monitor specific, checkable developments. For Critical Metals (CRML), watch for any formal announcements regarding the Tanbreez project in Greenland, including permitting timelines or joint venture agreements. Any news on the operational status and progress of its Romanian refinery plan will also be significant. For USA Rare Earth (USAR), look for updates on the construction and commissioning of its rare earth separation and magnet manufacturing facilities at Round Top. MP Materials (MP) is expected to ship its first magnets to GM in Q4 2026, a key milestone that will test its integrated strategy. For lithium producers like Albemarle (ALB) and Lithium Americas Corp. (LAC), watch for quarterly production reports and any changes to their expansion plans or capital expenditure forecasts. Pirelli's US multi-year investment plan of approximately €1 billion, announced September 22, 2026, could also signal increased demand for certain critical minerals, depending on the specifics of their manufacturing needs. Keep an eye on the broader geopolitical landscape; the Greenland pact is a direct response to strategic supply concerns, and similar agreements or policy shifts could emerge elsewhere., { "label": "Security Pact", "note": "US-Greenland deal signals political will to develop.", "metric": "Sept 21, 2026" }, { "label": "Ore Extraction", "note": "Mining and concentrating rare earth minerals." }, { "label": "REO Separation", "note": "Complex, capital-intensive process to isolate oxides.", "metric": "90% China control" }, { "label": "Magnet Production", "note": "Use of separated REOs in permanent magnets." } ], "highlight": 3, "highlight_note": "Separating rare earth oxides is the critical, bottleneck stage due to complexity and cost.", "footnote": "Source: PubCo Insight analysis of market news and company filings, Sept 2026" }