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1 de jul. de 2024 · The rare-earth elements (REE), also called the rare-earth metals or rare earths or, in context, rare-earth oxides, and sometimes the lanthanides (although scandium and yttrium, which do not belong to this series, are usually included as rare earths), are a set of 17 nearly indistinguishable lustrous silvery-white soft heavy metals.
24 de jun. de 2024 · Learn about the 16 rare-earth elements, their discovery, history, and applications in modern technology. Find out why they are not so rare and where they are produced and refined.
2 de jul. de 2024 · The rare earth elements are a group of transition metals, found mainly in the first row below the periodic table (the lanthanide series), plus scandium and yttrium. Despite the name, these elements are fairly abundant in the Earth’s crust.
24 de jun. de 2024 · Collectively, the rare earths rank as the 22nd most abundant “element” (at the 68th percentile mark). The non-lanthanide rare-earth elements, yttrium and scandium, are 29th and 44th, respectively, in their abundances.
12 de jun. de 2024 · The heart of an ancient volcano in Norway hosts Europe's largest deposit of rare earth elements, according to the mining company Rare Earths Norway.
24 de jun. de 2024 · Bastnasite. Bastnasite, a fluorocarbonate, is the principal source of rare earths. About 94 percent of the rare earths used in the world come from mines in Mountain Pass, California, U.S.; Bayan Obo, Inner Mongolia, China; Shandong province, China; and Sichuan province, China.
Hace 1 día · In planetary astronomy and astrobiology, the Rare Earth hypothesis argues that the origin of life and the evolution of biological complexity, such as sexually reproducing, multicellular organisms on Earth, and subsequently human intelligence, required an improbable combination of astrophysical and geological events and
