In simple terms
Rare earth elements are a group of 17 metals: the 15 lanthanides on the periodic table, plus scandium and yttrium.
They are not actually rare in the Earth crust. The difficulty is that they occur mixed together in the same ore and are hard to pull apart.
How it works
Because their atoms are similar in size and electron structure, these elements sit together in minerals and behave alike chemically. Separating them takes long chains of chemical processing rather than simple smelting.
Analysts split them into light and heavy. Light rare earths include lanthanum, cerium, praseodymium and neodymium. Heavy rare earths include terbium, dysprosium and erbium, along with scandium and yttrium.
Statistical agencies count them as rare earth oxide equivalent, written REO, so tonnages can be compared like with like. The US Geological Survey figures cover the lanthanides and yttrium but exclude most scandium.
The real bottleneck is refining rather than digging. One country can hold the ore while another holds the chemistry that turns it into usable material.
Why it matters
Neodymium, praseodymium, terbium and dysprosium make the strongest permanent magnets available, which is why they sit inside wind turbines, electric motors, hard drives, headphones and medical scanners.
Other uses are less visible: catalysts in oil refining and vehicle exhausts, polishing compounds and optical glass, phosphors in displays and lighting, and alloys in batteries and superalloys.
Supply is concentrated. The Congressional Research Service reports that China mines about 60 percent of global rare earths, processes and separates about 90 percent, and manufactures about 94 percent of rare earth magnets. In 2025 it announced export controls on samarium, gadolinium, terbium, dysprosium, lutetium, scandium and yttrium.
That concentration turns a chemistry problem into a trade and security one, which is why rare earths keep surfacing in talks between governments.
Where you will see it
- Trade negotiations and export control announcements.
- Electric vehicle and wind turbine supply chain reports.
- Critical minerals lists published by governments.
- Specifications for magnets, screens, catalysts and polishing compounds.
Example
The magnet in an electric car motor contains neodymium and often a little dysprosium, so a single vehicle links its driver to a mine and a separation plant on the other side of the world.
Often confused with
Rare earths are not the same as critical minerals, which is a policy list that also covers lithium, cobalt, graphite and others. Nor are they precious metals such as gold or platinum.
Key facts
- Rare earth elements are the 15 lanthanides plus scandium and yttrium, they typically occur together in nature, and they are not rare in the Earth crust.2
- World mine production in 2024 was about 390,000 tonnes of rare earth oxide equivalent, of which China produced 270,000 tonnes.1
- US net import reliance for rare earth compounds and metals was 80 percent of apparent consumption in 2024, down from more than 95 percent in prior years.1
- China mines about 60 percent of global rare earths, processes and separates about 90 percent, and manufactures about 94 percent of rare earth magnets.2
- In 2025 China announced export controls on samarium, gadolinium, terbium, dysprosium, lutetium, scandium and yttrium.2
Related concepts
Quick checkWhy are rare earth elements called rare if they are common in the crust?Show answer
Because they occur mixed together in the same ores and are chemically hard to separate, so usable supply is limited by refining capacity rather than by scarcity in the ground.
Sources
- US Geological Survey. Mineral Commodity Summaries 2025: Rare Earths. 2025 (accessed 27 September 2026)
- Congressional Research Service, report IF13171, read via EveryCRSReport. Rare Earth Elements and U.S. Supply Chains. Undated (accessed 27 September 2026)
Editorially reviewed by Specialty Digest Editorial TeamLast reviewed September 27, 2026Researched and drafted with AI assistanceReport an issue