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Bookmark or Share- What are rare earth elements, and why are they important?A precise definition of rare earth elements (REEs) and in-depth discussion of how common REEs are, worldwide REE production, and current REE production. Portal for information on annual production, price, and use of rare earth elements since 1997, plus links to further information.
- Rare-earth element | Uses, Properties, & Facts | Britannicarare-earth element, any member of the group of chemical elements consisting of three elements in Group 3 (scandium [Sc], yttrium [Y], and lanthanum [La]) and the first extended row of elements below the main body of the periodic table (cerium [Ce] through lutetium [Lu]).
- Rare Earths Statistics and Information | U.S. Geological Survey - USGS.govStatistics and information on the worldwide supply of, demand for, and flow of the mineral commodity group rare earths - scandium, yttrium, and the lanthanides. The principal economic sources of rare earths are the minerals bastnasite, monazite, and loparite and the lateritic ion-adsorption clays.
- Rare-earth mineral - WikipediaA rare-earth mineral contains one or more rare-earth elements as major metal constituents. Rare-earth minerals are usually found in association with alkaline to peralkaline igneous complexes in pegmatites. This would be associated with alkaline magmas or with carbonatite intrusives.
- Rare-earth element - Minerals, Ores, Uses | BritannicaOf the approximately 160 minerals that are known to contain rare earths, only four are currently mined for their rare earths: bastnasite, laterite clays, monazite, and loparite. With the exception of laterite clays, these minerals are good sources of light lanthanides and lanthanum and account for about 95 percent of the rare earths in use.
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