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Rare-earth ore, shown with a United States penny for size comparison. A 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 magmas in pegmatites or with carbonatite intrusives.
The rare-earth elements (REE), also called the rare-earth metals or rare earths, and sometimes the lanthanides or lanthanoids (although scandium and yttrium, which do not belong to this series, are usually included as rare earths), [1] are a set of 17 nearly indistinguishable lustrous silvery-white soft heavy metals. Compounds containing rare ...
The Mountain Pass Rare Earth Mine and Processing Facility, owned by MP Materials, is an open-pit mine of rare-earth elements on the south flank of the Clark Mountain Range in California, 53 miles (85 km) southwest of Las Vegas, Nevada. In 2020 the mine supplied 15.8% of the world's rare-earth production.
Rare-earth magnet, a type of magnet that employs rare earth elements to increase effectiveness; Rare Earth hypothesis, the theory that complex life in the universe is exceptionally rare; as a proper noun: Rare Earth: Why Complex Life Is Uncommon in the Universe, a book by Peter Ward and Donald E. Brownlee; Rare Earth (band), an American musical ...
The company’s principal asset was the Mountain Pass rare earth mine, which once supplied the majority of the world's rare earth elements. The mine was previously owned by Unocal. The mine closed in 2002, but reopened in 2010. [15] Because of the competition from China, the mine became unprofitable.
Neodymium is typically 10–18% of the rare-earth content of commercial deposits of the light rare-earth-element minerals bastnäsite and monazite. [14] With neodymium compounds being the most strongly colored for the trivalent lanthanides, it can occasionally dominate the coloration of rare-earth minerals when competing chromophores are absent.
Lanthanites are a group of isostructural rare earth element (REE) carbonate minerals. This group comprises the minerals lanthanite-(La), [ 3 ] [ 4 ] lanthanite-(Ce), [ 5 ] and lanthanite-(Nd). [ 6 ] This mineral group has the general chemical formula of ( REE ) 2 (CO 3 ) 3 ·8(H 2 O).
The rare earth industry in China is a large industry. Rare earths are a group of elements on the periodic table with similar properties. Rare earth metals are used to manufacture technologies including electric vehicles (EVs), wind turbines, consumer electronics and other clean energy technologies. Rare earth elements are also important to national governments because they are used in the ...