Tag: China rare earths

  • China’s Rare Earth Monopoly: How One Country Cornered the Market on Modern Technology

    In April 2025, China imposed export licensing requirements on seven rare earth elements—samarium, gadolinium, terbium, dysprosium, lutetium, scandium, and yttrium—plus all their derivative compounds, metals, and magnets. Export volumes dropped roughly 74 percent within a month. Carmakers in the United States and Europe couldn’t get permanent magnets. Some cut production. Some shut down factories temporarily. European rare earth prices hit six times the Chinese domestic price—a spread so wide it essentially constituted an export tax without calling itself one. The International Energy Agency described it as supply concentration risk “becoming reality.”

    Then in October, China escalated. Five more elements added to the control list. Export restrictions extended to lithium-ion battery supply chains, synthetic graphite anode materials, and superhard materials including synthetic diamond. And—this is the part that made trade lawyers lose sleep—China applied the foreign direct product rule to rare earths for the first time. That mechanism, which the U.S. had pioneered to restrict semiconductor exports to China, now worked in reverse: products made anywhere in the world using Chinese-origin rare earth materials or Chinese rare earth processing technology required an export license from Beijing. China wasn’t just controlling what left its borders. It was claiming jurisdiction over what happened to its materials after they left.

    The controls were partially suspended in November 2025 as part of a broader U.S.-China trade negotiation, buying roughly a year of breathing room. But the message was delivered. China had demonstrated that it could, at will, disrupt the supply chains for electric vehicles, wind turbines, fighter jets, guided missiles, smartphones, MRI machines, and essentially every piece of advanced technology that relies on permanent magnets—which is most of them. And it demonstrated this not through a theoretical exercise or a diplomatic warning but by actually doing it, watching the global manufacturing base scramble, and then offering to turn it back on as a negotiating concession.

    The question everyone should be asking is not “how did China get this leverage?” The question is “how did every other country let them?”

    The strategic bet nobody noticed

    The standard version of this story starts with Deng Xiaoping reportedly saying in 1992 that “the Middle East has oil, China has rare earths.” Whether he actually said it in those exact words is debated—the original context was a visit to Bayan Obo, the world’s largest rare earth mine, in Inner Mongolia—but the policy direction was unmistakable. China decided, decades before anyone else was paying attention, that rare earth processing would be a strategic industry worth dominating.

    The decision wasn’t about mining. Rare earth elements are not geologically rare—they’re found on every continent, including in the United States, Australia, Canada, Brazil, and throughout Africa and Scandinavia. The name is misleading. What’s rare is the willingness to process them, because rare earth processing is genuinely nasty. Separating individual rare earth elements from ore requires extensive chemical processing—solvent extraction, acid leaching, ion exchange—that produces large volumes of toxic and sometimes radioactive waste. The environmental costs are enormous. The margins, historically, have been thin. And the capital investment required to build a separation facility from scratch is measured in billions of dollars and years of construction.

    China accepted those costs. Starting in the 1980s and accelerating through the 1990s and 2000s, Chinese state-supported enterprises built out the entire value chain: mining, concentration, separation, oxide production, metal refining, alloy manufacturing, and finished magnet production. They did it with lower labor costs, lower environmental standards, and state subsidies that made it effectively impossible for competitors to operate profitably. Western rare earth operations—including the Mountain Pass mine in California, which had been the world’s largest rare earth producer—shut down because they couldn’t compete on price. By the early 2010s, China controlled over 95 percent of global rare earth production.

    The genius of the strategy—if that’s the right word for a policy that also created massive environmental sacrifice zones across Inner Mongolia—was that China didn’t just dominate one link in the chain. It dominated every link. Mining the ore is step one. Separating it into individual oxides is step two. Reducing the oxides to metals is step three. Alloying the metals and manufacturing finished magnets is step four. Each step requires specialized expertise, equipment, and chemical processes that take years to develop. China built all four steps while the rest of the world was content to buy the output. By the time anyone realized the dependency was strategic rather than merely commercial, the dependency was so deep that unwinding it would take a decade at minimum.

    The numbers in 2026

    The IEA’s Global Critical Minerals Outlook reports that for 19 of 20 important strategic minerals, China is the leading refiner, with an average market share of 70 percent. For rare earths specifically, the concentration is even more extreme. China processes approximately 90 percent of the world’s rare earth oxides. It manufactures roughly 85 percent of global NdFeB permanent magnets. It controls a near-monopoly—95 percent or above—in precursor cathode materials and lithium iron phosphate cathode materials for batteries.

    The European Central Bank estimated that over 80 percent of large European firms are no more than three intermediaries away from a Chinese rare earth producer. That’s not a supply chain. That’s a dependency relationship with a single counterparty who has demonstrated both the capability and the willingness to restrict supply for geopolitical purposes.

    The U.S. position is marginally better but not fundamentally different. MP Materials operates the Mountain Pass mine in California—the only active rare earth mining operation of scale in the country—and in 2024 produced a record 45,000 metric tons of rare earth oxide concentrate. Its Independence facility in Fort Worth, Texas, began trial production of sintered NdFeB magnets in late 2025, with a target capacity of about 1,000 metric tons per year. Global NdFeB magnet production is roughly 220,000 to 240,000 metric tons annually. MP Materials’ output, at full capacity, would represent less than half a percent of global supply. The Pentagon awarded a conditional $620 million loan to Vulcan Elements and ReElement Technologies to scale domestic magnet production. Noveon Magnetics is currently the only active rare earth magnet manufacturer in the United States and announced a partnership with Australian producer Lynas Rare Earths to build a domestic supply chain. All of these efforts are real and necessary and collectively amount to a rounding error relative to China’s installed capacity.

    Why you can’t just “build more mines”

    The most common response to the rare earth supply chain problem—from politicians, editorial writers, and people who haven’t spent time understanding the chemistry—is some version of “we have rare earths too, we should just mine them.” The problem is that mining is the easy part. It’s the processing that creates the monopoly, and processing is where China’s advantage is nearly insurmountable in the short term.

    Separating rare earth elements from each other is one of the most chemically demanding industrial processes in existence. The 17 rare earth elements have nearly identical chemical properties—that’s why they’re grouped together—which means separating, say, neodymium from praseodymium from dysprosium from terbium requires hundreds of stages of solvent extraction, each stage achieving only a marginal enrichment. The process consumes enormous volumes of hydrochloric acid, sodium hydroxide, and organic solvents, and produces proportional volumes of chemical waste. Building a separation plant from scratch takes three to five years and costs over a billion dollars. Qualifying the output to meet the specifications required by magnet manufacturers—purity levels of 99.5 percent or higher for individual oxides—adds additional time and expertise.

    China has spent forty years optimizing these processes. The rest of the world is starting from approximately zero, and the engineers and chemists who know how to run a rare earth separation plant at commercial scale are overwhelmingly in China. You can build the facility. Staffing it with people who know what they’re doing is a different problem.

    The 2010 precedent nobody learned from

    This isn’t even the first time China used rare earth export controls as geopolitical leverage. In 2010, following a territorial dispute with Japan over the Senkaku/Diaoyu Islands, China informally restricted rare earth exports to Japan—the world’s largest rare earth consumer at the time and a major manufacturer of permanent magnets and electronics. The embargo was never officially acknowledged but was widely reported by Japanese importers and confirmed by market data showing a sudden, dramatic drop in shipments.

    The global response was alarm, hand-wringing, and a burst of investment in alternative supply chains that faded as soon as prices normalized. The U.S. opened the Mountain Pass mine back up. Australia’s Lynas Rare Earths built a processing facility in Malaysia. The WTO ruled against China’s export quotas in 2014. China lifted the quotas. Prices came down. And the structural dependency went essentially unchanged because the alternative projects were more expensive than Chinese supply and couldn’t compete once the price pressure was removed.

    Fifteen years later, the same vulnerability was exploited with the same playbook, except this time the controls were more comprehensive, the extraterritorial provisions were new, and the geopolitical context—a genuine strategic competition between the U.S. and China rather than a bilateral territorial dispute—suggests the restrictions will recur regardless of any temporary suspension.

    What the response actually looks like

    The EU passed the Critical Raw Materials Act and launched the RESourceEU initiative for joint purchasing and stockpiling. The European Parliament called China’s actions “coercive” and demanded acceleration of domestic mining projects and bilateral partnerships with alternative supplier nations. Germany committed to €35 billion in resilience and deterrence programs that include rare earth supply chain diversification.

    The U.S. is pursuing a multi-track strategy: domestic mining and processing (MP Materials, Vulcan Elements), allied supply chains (Lynas partnership with Noveon), tariffs on Chinese magnets (25 percent, scheduled for 2026), and stockpiling. The Pentagon’s Defense Logistics Agency maintains a strategic reserve of certain rare earth materials, though the size and adequacy of the reserve are classified.

    But here’s the honest assessment: none of these efforts will meaningfully reduce China’s leverage within the next five years. The processing infrastructure takes years to build, the workforce takes years to train, the qualification cycles for defense-grade materials take years to complete, and the volumes required to replace Chinese supply are orders of magnitude beyond what any current Western facility can produce. The 2025 export controls demonstrated that China can inflict significant economic damage on the global manufacturing base essentially at will—and that the threat of doing so is itself a powerful bargaining chip that costs Beijing nothing to maintain.

    The rare earth monopoly is not a market failure. It’s a strategic outcome, achieved through decades of deliberate industrial policy, tolerated by decades of Western indifference, and now leveraged with a precision that makes it one of the most effective instruments of economic statecraft in the 21st century. The question of how to respond is real and urgent. The question of whether a response is possible in time to matter during the current geopolitical cycle is considerably less certain.

    We cover China’s rare earth strategy—along with the science, processing chemistry, and geopolitics of 36 critical elements from lithium to uranium—across our Rare Earth Elements & Critical Minerals course. If the foreign direct product rule applied to magnets changed your understanding of how supply chain warfare works, the course goes element by element through every chokepoint.

  • How Neodymium Magnets Are Made (And Why They Matter for Everything From Wind Turbines to F-35s)

    Every electric vehicle on the road has them. Every wind turbine spinning on a ridge in west Texas has them. Every pair of AirPods, every MRI machine, every hard drive, every guided missile in the Pentagon‘s inventory has them. Neodymium-iron-boron magnets—NdFeB if you’re reading a spec sheet, “neo magnets” if you’re not—are the strongest permanent magnets commercially available, and they are so deeply embedded in modern technology that removing them from the supply chain would be roughly equivalent to removing concrete from construction. You could technically build things without them. You just wouldn’t want to see what you’d get.

    The thing is, almost nobody knows how they’re made. The manufacturing process is genuinely fascinating—part metallurgy, part materials science, part geopolitical thriller—and understanding it explains why these magnets are at the center of a supply chain crisis that involves export controls, Pentagon loans, tariff threats, and the kind of great-power competition that used to be about oil and is now about a silvery metal most people can’t pronounce.

    What makes them special

    A neodymium magnet is an alloy of three elements: neodymium (a rare earth element, atomic number 60), iron, and boron. The compound—Nd2Fe14B—forms a tetragonal crystal structure that was discovered independently by General Motors and Sumitomo Special Metals in 1984, which is the materials science equivalent of two people showing up to a party wearing the same outfit except the outfit happens to reshape global manufacturing for the next four decades.

    What makes this crystal structure so magnetically powerful is its exceptionally high magnetocrystalline anisotropy—the atomic-level property that determines how strongly a material resists demagnetization. In plain language: the crystal lattice is shaped such that the magnetic domains align along a single preferred axis with extreme reluctance to flip. The energy density is roughly ten times higher than a standard ferrite magnet, which means a neodymium magnet the size of a quarter can do the work of a ferrite magnet the size of a coffee mug. That size-to-strength ratio is why they ended up everywhere. When you need a powerful magnetic field in a small package—an EV motor, a drone, a missile guidance system, an earbud—there is no practical substitute.

    How they’re actually made

    The manufacturing process is powder metallurgy, and every step matters. Screw up the particle size, the alignment pressure, or the sintering temperature by a small margin and you get a mediocre magnet instead of a great one. This is not an industry where you can wing it.

    It starts with strip casting. The raw materials—neodymium (often with some praseodymium substituted in because it’s cheaper and chemically similar), iron, and boron, plus small additions of dysprosium or terbium for high-temperature applications—are melted together in a vacuum induction furnace at around 1,300°C. The molten alloy is poured onto a rapidly spinning, water-cooled copper roller, which solidifies it into thin strips. The rapid cooling is critical: it produces a fine-grained microstructure that’s optimized for the next step.

    Those strips go through hydrogen decrepitation—you expose them to hydrogen gas, which diffuses into the grain boundaries and causes the alloy to crack apart into coarse chunks. This is nature doing the first stage of size reduction for you. From there, the chunks go into a jet mill operating in a nitrogen atmosphere, where high-pressure gas streams grind the material into an extremely fine powder with an average particle size of about 3 microns. That’s roughly the size of a red blood cell. The nitrogen atmosphere prevents oxidation, which would ruin the magnetic properties—neodymium is ferociously reactive with oxygen, which is also why the finished magnets need protective coatings, but we’ll get there.

    Now comes the step that makes or breaks the magnet: magnetic field alignment and pressing. The powder goes into a mold, and a powerful external magnetic field—several tesla—is applied. This field physically rotates the tiny crystalline particles so their easy magnetization axes all point the same direction. The aligned powder is then compressed under enormous pressure. The alignment quality during this step directly determines the magnet’s maximum energy product—the BHmax value that shows up on the spec sheet and tells an engineer how much magnetic work the magnet can do per unit volume. A poorly aligned magnet with the exact same chemical composition will be measurably weaker than a well-aligned one. The process matters as much as the recipe.

    The compressed “green compact” is then sintered in a vacuum furnace at approximately 1,050°C. Sintering fuses the powder particles together without fully melting them—it’s the difference between welding and soldering, conceptually—creating a dense, solid block with the internal crystal alignment locked in place. After sintering, the magnet goes through a two-stage annealing process at around 900°C and then 600°C, which relieves internal stresses and dissolves unstable phases that would degrade performance over time.

    At this point you have a block of sintered NdFeB that is extremely hard, extremely brittle, and not yet the shape anyone needs. Machining comes next—diamond-tipped saws and grinding wheels cut the blocks into the precise geometries required for specific applications: arcs for motors, discs for speakers, rings for sensors. This is delicate work because the material shatters like ceramic if you look at it wrong. The kerf loss (material wasted in cutting) is a meaningful cost factor, especially when neodymium oxide costs upward of $70 per kilogram.

    Then: coating. Unprotected NdFeB corrodes aggressively. The neodymium-rich grain boundary phase reacts with moisture and oxygen, forming hydroxides that literally cause the magnet to disintegrate over time—structural failure from the inside out. The standard solution is a multi-layer nickel-copper-nickel electroplating, though epoxy coatings, zinc plating, and parylene are used depending on the application environment.

    Finally, the magnet is magnetized. A pulse magnetizer blasts it with a field of approximately 5 tesla, which saturates the aligned domains and produces a permanent magnet ready for installation. The whole process, from raw oxide to finished magnet, involves dozens of precision-controlled steps, and the yield at each stage matters. This isn’t assembling a product. It’s growing one.

    Why this is a geopolitical problem

    China produces roughly 85% of the world’s NdFeB magnets. Not 85% of the neodymium—85% of the finished magnets. Japan and Vietnam account for most of the rest. The United States, as of early 2025, produced approximately zero sintered NdFeB magnets at commercial scale. That’s a supply chain that has the resilience of a house of cards in a wind tunnel, and everyone involved knows it.

    The concentration isn’t accidental. China made a strategic bet on rare earth processing decades ago—Deng Xiaoping reportedly said in 1992 that the Middle East has oil and China has rare earths—and then spent thirty years building out the mining, separation, refining, alloying, and magnet manufacturing infrastructure while everyone else was content to buy cheap finished products. The result is a vertically integrated supply chain that’s extraordinarily difficult to replicate quickly, because it’s not just the magnet factory you need. It’s the solvent extraction plant, the oxide separation facility, the metal reduction furnace, the alloy production line, and the workforce that knows how to run all of it. Each step has its own chemistry, its own equipment, its own failure modes.

    The consequences of this concentration became concrete in April 2025, when China imposed export licensing requirements on dysprosium, terbium, and finished magnets. Export volumes reportedly dropped roughly 74% in May compared to the prior year. These aren’t abstract tariff games—dysprosium is the element that gives NdFeB magnets their high-temperature performance, and without it, the magnets in an F-35’s flight control actuators, an MQ-9 Reaper drone’s guidance system, or a Virginia-class submarine’s propulsion motor would lose their magnetic properties at operating temperatures. The Pentagon noticed.

    The U.S. response has been a scramble. MP Materials—which operates the Mountain Pass mine in California, the only active rare earth mining operation of scale in the country—opened a magnet manufacturing facility in Fort Worth, Texas, in 2025. They began trial production of automotive-grade sintered NdFeB magnets late that year, with a target capacity of about 1,000 metric tons per year. For context, global production is somewhere around 220,000 to 240,000 metric tons annually. So the Fort Worth facility, at full capacity, would represent roughly 0.4% of global supply. It’s a start. It’s not a solution.

    The Pentagon, meanwhile, awarded a conditional $620 million loan to Vulcan Elements and ReElement Technologies to scale domestic magnet production for defense applications. President Trump publicly threatened 200% tariffs on Chinese goods if Beijing restricted rare earth magnet shipments. The EU passed the Critical Raw Materials Act. Everyone is suddenly very interested in a supply chain they ignored for thirty years.

    Why there’s no easy substitute

    The reason this matters so much is that there is no drop-in replacement for NdFeB in most high-performance applications. Ferrite magnets are cheap and abundant, but they’re roughly one-tenth the energy density—you’d need a motor ten times the size to produce the same torque, which defeats the purpose of using permanent magnets in the first place. Samarium cobalt magnets handle high temperatures better but cost significantly more and use cobalt, which has its own supply chain problems centered on the Democratic Republic of Congo. Researchers have explored ferrite-based alternatives, iron nitride, and manganese-based compounds, but none have come close to NdFeB’s combination of magnetic strength, manufacturability, and cost at scale.

    The substitution problem is especially acute in two sectors: electric vehicles and wind turbines. A typical EV traction motor uses 1 to 2 kilograms of NdFeB magnets. A direct-drive offshore wind turbine—the kind being deployed at scale in the North Sea and off the U.S. Atlantic coast—uses roughly 600 kilograms per megawatt of capacity. If you’re planning to electrify the global vehicle fleet and simultaneously triple offshore wind capacity by 2040, you need a lot more neodymium than currently exists in the processing pipeline. The bottleneck isn’t the ore. It’s the processing, the separation, and the magnet manufacturing—and those bottlenecks are sitting in a country that has demonstrated a willingness to use them as leverage.

    This is the kind of constraint that doesn’t show up in the optimistic energy transition models, and it’s the kind of thing that makes the difference between a plan that works on a slide deck and a plan that works on a random Tuesday when the supply ship doesn’t arrive.

    We cover neodymium magnets—along with 35 other critical elements and minerals, from lithium to uranium to gallium nitride—across 36 lectures in our Rare Earth Elements & Critical Minerals course. If you want the full supply chain story, from the Bayan Obo mine to the inside of an F-35 actuator, that’s where it lives.