22 September 2025
Rare earth magnets: processing bottlenecks beyond the mine
Key insights from this briefing
Why is the term "rare earth" misleading?
Many rare earth elements are more abundant in the Earth's crust than familiar precious metals. The name reflects the historical difficulty of separating chemically similar elements rather than true geological rarity. Their strategic scarcity is therefore often created by processing complexity and concentrated refining capacity.
What makes some rare-earth ores difficult to process?
Monazite and some other rare-earth minerals can contain naturally occurring thorium. Separating valuable rare earths therefore requires specialised handling of radioactive material and waste streams, adding regulatory, environmental and operating costs to an already complex chemical-separation process.
Excerpt from this briefing's Industry Insight
Rare earth magnets depend on a processing chain that is much more concentrated than the underlying geology. Neodymium and praseodymium form a large share of high-performance permanent magnets, while some common rare earth ores contain thorium that complicates processing and waste management. Separating chemically similar elements, controlling radioactive residues and producing material at very high purity create the principal bottlenecks between a mineral deposit and a finished magnet.
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