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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.
Mountain Pass mine. 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.
Praseodymium. double hexagonal close-packed (dhcp) (hP4) Praseodymium is a chemical element; it has symbol Pr and the atomic number 59. It is the third member of the lanthanide series and is considered one of the rare-earth metals. It is a soft, silvery, malleable and ductile metal, valued for its magnetic, electrical, chemical, and optical ...
Most rare earth elements are located in China, with the world’s second-largest economy estimated to account for 70% of global rare earth ore extraction and 90% of rare earth ore processing.
Monazite is a primarily reddish-brown phosphate mineral that contains rare-earth elements. Due to variability in composition, monazite is considered a group of minerals. [3] The most common species of the group is monazite- (Ce), that is, the cerium-dominant member of the group. [4] It occurs usually in small isolated crystals.
Pensana Salt End. Pensana Saltend is a future processing facility for rare earth metals at Salt End, near Hull in the East Riding of Yorkshire, England. When operating at capability, the plant aims to produce 5% of world demand for neodymium and praseodymium oxide. Work on the site started in 2021, with full opening by 2023.
Mount Weld mine is a rare earth mine in Western Australia, located about 30 km (20 mi) south of Laverton and 120 km (75 mi) east of Leonora. [1] It is one of the largest rare earth deposits in the world. [2] It is owned by Lynas Corporation. Mining began at the Mount Weld site in 2011. [3]
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 complexes in pegmatites. This would be associated with alkaline magmas or with carbonatite intrusives. Perovskite mineral phases are common hosts to rare-earth ...