Praseodymium

What Is Praseodymium

Praseodymium is element 59 — a light rare earth element sitting one position before neodymium in the lanthanide series, and the element that the magnet industry has spent decades quietly folding into the word "neodymium" without most people noticing.

Here is the thing that almost every discussion of rare earth magnets omits: NdFeB permanent magnets — neodymium-iron-boron (the strongest commercially available permanent magnet, used in EV traction motors, wind turbine generators, defense guidance systems, and industrial robotics) — are not made from pure neodymium. They are made from a mixed praseodymium-neodymium oxide feedstock called NdPr (a blended oxide containing approximately 75–80% neodymium oxide and 20–25% praseodymium oxide by weight, sold and procured as a single commercial product rather than as separated elements). When a manufacturer orders the input for a neodymium magnet, what arrives is NdPr. Not pure neodymium.

Praseodymium's role in the magnet is not secondary. In the NdFeB crystal structure, praseodymium substitutes for neodymium in the lattice almost interchangeably — the two elements are so chemically similar that separating them is technically demanding and commercially expensive. The properties they contribute to the finished magnet — high remanence (the strength of the magnetic field the magnet produces after being magnetized), high energy product (the measure of how much magnetic energy the magnet can store per unit volume), and the resistance to demagnetization at room temperature — are essentially identical.

What praseodymium is not: it is not the element that makes magnets heat-resistant. That function belongs to dysprosium and terbium, added via grain boundary diffusion for high-temperature applications. Praseodymium is in every NdFeB magnet regardless of operating temperature. The heat-resistance additives are in the subset that runs hot.

The commercial implication is that the praseodymium supply chain and the neodymium supply chain are the same supply chain. Same deposits. Same processors. Same pricing dynamics. Same export controls. Same DFARS compliance gap. The ScarceEarth neodymium page tracks pure Nd oxide (SMM-RE-OX-010). This page tracks pure Pr oxide (SMM-RE-OX-009). Both are proxies for the same physical reality: the NdPr mixed oxide feedstock that every NdFeB magnet manufacturer in the world depends on.

Why It's Almost Never Sold Alone

Praseodymium and neodymium are geological twins. They occur together in carbonatite deposits like Mountain Pass in California, in ionic clay deposits in southern China, in monazite-bearing beach sands in Australia, India, and Brazil. In every deposit type, the two elements are present in a fixed ratio that reflects the geochemistry of the ore body — roughly three to four parts neodymium to one part praseodymium, with minor variation by deposit.

Separating them is possible. Solvent extraction — the same process used to separate all rare earth elements from each other — can isolate pure praseodymium oxide and pure neodymium oxide as distinct products. But separation adds cost, adds processing steps, and produces a product that the magnet industry does not actually need. Magnet manufacturers discovered decades ago that the NdPr blend performs at least as well as pure neodymium in the magnet lattice, and in some formulations slightly better. The commercial incentive to pay for separation and then buy the elements separately has never been strong enough to change market practice.

The result is that the primary commercial product for the permanent magnet industry is NdPr mixed oxide — sold at a blended price that reflects the combined value of both elements. MP Materials, the only commercial-scale rare earth producer in the Western Hemisphere, sells NdPr as a mixed product. Lynas Rare Earths, the only commercial-scale non-Chinese rare earth producer globally, sells NdPr as a mixed product. The primary price benchmark tracked by Shanghai Metals Market — SMM-RE-OX-001 — is the NdPr mixed oxide price, not individual element prices.

Pure praseodymium oxide (SMM-RE-OX-009, the ticker tracked on this page) trades in a thinner market serving specialty applications — phosphors, certain glass colorants, specific high-purity manufacturing processes. The pure Pr price tracks closely with the NdPr blended benchmark but typically at a slight premium because the pure-element market is less liquid and separation adds cost.

For supply chain analysis, both prices matter. The NdPr benchmark tells you what magnet manufacturers are actually paying for their feedstock. The pure Pr price tells you the standalone value of the element and the premium the market assigns to separated product.

The NdPr Benchmark Distinction

Two price figures appear on this page. Understanding why requires understanding how the rare earth market actually works — and why the ScarceEarth neodymium page and this page tell different but complementary stories.

The ScarceEarth neodymium page tracks pure Nd oxide (SMM-RE-OX-010) — the price of isolated neodymium oxide in the Chinese domestic industrial market. Pure Nd oxide at the June 1, 2026 SMM benchmark: $121.95/kg.

This page tracks pure Pr oxide (SMM-RE-OX-009) — the price of isolated praseodymium oxide in the same market. Pure Pr oxide at the June 1, 2026 SMM benchmark: $124.88/kg.

Neither of these is what magnet manufacturers actually buy.

What magnet manufacturers actually buy is NdPr mixed oxide (SMM-RE-OX-001) — the blended feedstock that MP Materials, Lynas, and Chinese producers sell as their primary commercial product. NdPr mixed oxide at the May 1, 2026 SMM benchmark: $99.61/kg. The blend trades at a discount to the weighted average of the pure elements because it has not been separated — the separation cost is the spread.

Why track the pure element prices at all? Because they tell you things the blended price does not. When pure Nd oxide and pure Pr oxide diverge in price, it signals changing demand patterns in the specialty markets that use separated product. When both pure element prices rise faster than the NdPr blend, it signals that the value of separated supply is being repriced — a leading indicator of what the blended price will do next. When the spread between pure element and blended prices widens, it may signal emerging constraints in separation capacity.

The three prices together — pure Nd, pure Pr, NdPr blend — form a triangulated picture of the same supply chain at different processing stages. ScarceEarth tracks all three across the neodymium and praseodymium pages so readers can see the full picture.

The Supply Chain

Praseodymium's supply chain is neodymium's supply chain. The geological, processing, and geopolitical picture is identical.

China dominates. The same ionic clay deposits in Jiangxi, Fujian, Guangdong, and Yunnan that produce most of the world's neodymium produce most of the world's praseodymium. The same hard rock carbonatite deposits — Bayan Obo in Inner Mongolia, the largest rare earth deposit in the world — that contribute to Chinese light rare earth supply contribute to praseodymium supply. The same separation facilities that process neodymium process praseodymium as part of the same flowsheet.

Outside China, the picture is the same as for neodymium. MP Materials at Mountain Pass produced 2,599 metric tonnes of NdPr oxide in 2025 — up 101% year-on-year — and shipped its first commercial NdFeB permanent magnets from its Fort Worth, Texas facility in December 2025. Lynas at Mount Weld and LAMP in Malaysia produces NdPr as a mixed product, with some separated Nd and Pr capability at LAMP. Energy Fuels at White Mesa Mill is developing NdPr separation capability from monazite feedstock.

The April 2025 export licensing regime applied to the NdPr supply chain in the same way it applied to every rare earth element under its scope. Every cross-border shipment of praseodymium-containing material — whether as mixed NdPr oxide, separated Pr oxide, or praseodymium metal — requires Chinese government approval.

The June 15, 2026 Mineral Resources Law adds the same dynamic list architecture to praseodymium as to every other rare earth element. The list can be updated with approximately 14 days notice. Praseodymium, as a component of the NdPr feedstock central to the permanent magnet supply chain, sits squarely within the materials the dynamic list was designed to govern.

The DFARS Connection

DFARS 252.225-7052 takes effect January 1, 2027. The requirement: every rare earth element in the supply chain for a covered defense magnet must be sourced from non-Chinese, non-Russian, non-Iranian, non-North Korean origins. The entire chain — mined, separated, processed, melted — must be traceable to qualifying sources.

Praseodymium sits at the same compliance chokepoint as neodymium. A defense contractor building a DFARS-compliant NdFeB magnet needs China-free NdPr feedstock. That feedstock is approximately 20–25% praseodymium by weight. The praseodymium in that feedstock must clear the same origin requirements as the neodymium. There is no DFARS-compliant NdPr feedstock without DFARS-compliant praseodymium.

The compliance path runs through the same thin set of non-Chinese producers as neodymium: MP Materials' NdPr production at Mountain Pass (backed by a DoD partnership with a $110/kg NdPr price floor, established July 2025), Lynas's LAMP facility in Malaysia, Energy Fuels' White Mesa Mill. All three are developing the capacity to produce qualifying material, but commercial-scale DFARS-compliant NdPr supply on the January 1, 2027 timeline remains the same challenge for praseodymium as for neodymium.

The CSIS assessment — “adhering to this requirement may not be feasible” by the deadline (Dr. Gracelin Baskaran and Meredith Schwartz, CSIS Brief, April 4, 2026) — applies to the NdPr supply chain as a whole. Praseodymium is half of that supply chain.

Why It Belongs on This List

The ScarceEarth framework asks one question: does this material sit at the physical floor of a system that cannot function without it?

Praseodymium's answer is identical to neodymium's — because the system that cannot function without it is the same system.

Every NdFeB permanent magnet contains praseodymium. Not high-temperature magnets specifically. Not defense-grade magnets specifically. Every NdFeB magnet, in every application, at every operating temperature. The EV traction motor. The wind turbine generator. The defense actuator. The industrial robot. The hard drive. The air conditioner compressor. All of them. Praseodymium is in the physical floor of the permanent magnet supply chain by definition — it is half the feedstock.

The reason praseodymium doesn't get its own supply chain conversation is that it has been folded into the neodymium conversation for so long that most analysts have forgotten it's a separate element. The NdPr blend trades as one product. The risk is priced as one risk. But the physical reality is two elements, each with their own extraction profile, their own processing step, their own contribution to the finished magnet.

When the supply chain discussion says “we need to build Western neodymium capacity,” the correct translation is “we need to build Western NdPr capacity” — which means Western praseodymium capacity too. Building one without the other produces an incomplete supply chain.

The DFARS compliance gap is the clearest proof of this. A compliance program that traces neodymium sourcing without tracing praseodymium sourcing has not traced the supply chain. Both elements are in the magnet. Both must be China-free. The physical floor is not neodymium. It is NdPr. And NdPr is this page and the neodymium page read together.