Rare Earths, Meteorites and Magnets
Rare-earth elements are not necessarily rare, but are found only in low-concentration deposits and are difficult to extract. They are used (at low concentrations) in many technologies: flat-panel displays, LED lights, camera lenses, catalytic converters, disc-drives, batteries, and many more. Now, the largest use is in permanent magnets, which are used in electric motors and generators. With the aim towards ‘zero carbon’ and electrification, manifest in the proliferation of electric cars and wind turbines, the demand for permanent magnets has soared.