Rare Earth Stocks Dive on Thaw Hopes, But Supply Chain Gaps Remain

On September 10, 2026, a clutch of rare earth stocks, including USA Rare Earth (USAR), MP Materials (MP), and Critical Metals (CRML), fell sharply. This dip followed reports of a potential U.S.-China thaw, reversing earlier gains for USA Rare Earth, which had climbed on news from September 4 that China was blocking some rare earth shipments to the U.S. The market reacted to headlines about geopolitical shifts, but the actual physical constraints in the critical mineral supply chain are a more durable factor. The movement in share prices reflects a market sensitive to the perceived stability of global trade. However, the core issue for critical minerals, especially rare earths, is not just where the ore comes from, but where it gets processed into usable materials. Geopolitical tensions can disrupt supply, but the lack of domestic processing capacity creates a structural vulnerability that persists regardless of diplomatic overtures.

The Mechanism of Rare Earth Processing

Rare earth elements, or REEs, are not inherently rare in the Earth's crust. The challenge lies in extracting them economically and, more critically, separating them into individual oxides. REEs occur together in ore bodies. Their similar chemical properties make separation difficult and energy-intensive. For example, neodymium and praseodymium, crucial for permanent magnets, are often found together. Separating them requires a complex solvent extraction process. This involves dissolving the crushed ore in acid, then repeatedly washing the solution with organic solvents. Each wash separates a small amount of one element from the others. This process is repeated hundreds, sometimes thousands, of times in a cascade of mixing and settling tanks. The capital cost for these separation facilities is high. The operational costs, including reagents and energy, are substantial. Most of this complex, specialized processing capacity resides in China. Building new, efficient facilities outside China takes years, not months. It requires significant upfront investment and a highly skilled workforce. This bottleneck in separation and refining is the real constraint in the rare earth supply chain.

Companies in the Critical Minerals Space

Several companies are working to address these supply chain challenges across lithium, boron, and rare earths. In the lithium sector, **Standard Lithium Ltd. (SLI)** has been active in the Smackover Formation. On August 31, Standard Lithium and its joint venture partner Equinor signed a 10-year lithium offtake deal with LG Energy Solution. This agreement covers lithium carbonate output from their Texas project. Standard Lithium announced a positive Preliminary Economic Assessment for its Franklin Project in East Texas on September 8, estimating up to 70,000 tonnes of annual lithium carbonate output. The company has cleared permitting hurdles toward a final investment decision. **Atlas Lithium Corporation (ATLX)** is de-risking its Neves Project, having contracted 71% of its direct capital budget by September 9. **ioneer Ltd (IONR)** continues to advance its Rhyolite Ridge lithium-boron project in Nevada. Its integrated approach aims to produce both lithium carbonate and boric acid. For rare earths, **MP Materials (MP)** operates the Mountain Pass mine in California, the only integrated rare earth mining and processing site in North America. MP Materials extracts the ore and produces a rare earth concentrate. The company is working to expand its processing capabilities to include separation and refining domestically. **USA Rare Earth (USAR)** is developing its Round Top heavy rare earth and critical minerals project in Texas. The company aims to establish a fully integrated domestic supply chain from mine to magnet. **Critical Metals Corp. (CRML)** is focused on European lithium assets. On August 28, Critical Metals provided an update on its proposed acquisition of European Lithium, with a September court date set for the merger deal. Other companies are tackling different parts of the critical minerals puzzle. **American Battery Technology Company (ABAT)** focuses on battery recycling and primary mineral extraction. On September 8, the Bureau of Land Management accepted ABAT's Plan of Operations for its Tonopah Flats Lithium Project in Nevada. The company also hosted Department of Energy leadership on August 31 to showcase its commercial technologies for strengthening U.S. critical mineral supply chains. **NioCorp Developments Ltd. (NB)** is developing a niobium, scandium, and titanium project in Nebraska, with the potential for rare earth byproducts.

American Lithium Minerals, Inc.

American Lithium Minerals, Inc. (AMLM) is an exploration-stage company, pre-revenue, focused on lithium and boron properties in Nevada. The company trades over the counter. AMLM's current primary asset is the Sarcobatus Lithium property. This property consists of 1,780 acres of mining claims situated in Central Nevada. The company's filings indicate it has explored for lithium in Central Nevada since 2009. AMLM has also acquired and divested cobalt, nickel, and graphite prospects in Central Nevada, and rare earth elements projects in Kingman, Arizona and Southeast Illinois. On February 4, 2026, the SEC qualified a Regulation A offering on Form 1-A. This offering covers up to 80,000,000 units. Each unit includes one share of common stock and a warrant to purchase 1.5 shares of common stock. If all attached warrants are exercised in full, up to 120,000,000 additional shares could be issued. The warrants are exercisable at $0.05 per share until December 31, 2028. The minimum purchase requirement per investor is $1,000, though the company can waive this. The public record does not yet establish a definitive resource estimate or a Preliminary Economic Assessment for the Sarcobatus Lithium property. AMLM's stated long-term vision includes creating an interoperable ecosystem where assets can be tokenized and traded, merging public markets with blockchain technology.

What to watch

Investors in the critical minerals space should track concrete developments. For **Standard Lithium (SLI)**, watch for further updates on the final investment decision for its Smackover projects, following the LG Energy Solution offtake deal and the Franklin Project PEA. For **American Battery Technology Company (ABAT)**, look for progress on its Tonopah Flats Lithium Project in Nevada, specifically any permitting advancements or resource definition announcements after the BLM accepted its operations plan. **Critical Metals Corp. (CRML)** shareholders should monitor the September court date for the European Lithium merger deal. For **MP Materials (MP)** and **USA Rare Earth (USAR)**, the key is progress on their domestic rare earth separation and refining capabilities. Any news on the commissioning of new processing plants or significant capital expenditure announcements in this area would be material. Geopolitical headlines will continue to create volatility, but the underlying physical capacity for processing remains the long-term driver., { "label": "Concentrate", "note": "Initial processing to increase REE content." }, { "label": "Separate Oxides", "note": "Complex solvent extraction to isolate individual REEs.", "metric": "90% China Capacity" }, { "label": "Refine Metal", "note": "Further purification and conversion to metal." }, { "label": "Manufacture Products", "note": "Use REE metals in magnets, batteries, catalysts." } ], "highlight": 2, "highlight_note": "Most global rare earth separation and refining capacity is in China, creating a critical bottleneck.", "footnote": "Source: Industry reports, company filings" }