Earth Rare

Rare-earth element Rare-earth element Any of the fifteen lanthanides plus scandium and yttrium The rare-earth elements (REE), also called rare-earth metals, or rare earths, are a set of 17 nearly indistinguishable lustrous silvery-white soft heavy metals. The 15 lanthanides (or lanthanoids),[a] along with scandium and yttrium, are usually included as rare earths. Compounds containing rare-earths have diverse applications in electrical and electronic components, lasers, glass, magnetic materials, and industrial processes. Rare-earths are to be distinguished from critical minerals, which are materials of strategic or economic importance that are defined differently by different countries,[b] and rare-earth minerals, which are minerals that contain one or more rare-earth elements as major metal constituents. Rare-earth elements in the periodic table Hydrogen Helium Lithium Beryllium…

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