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rare-earth oxide

См. также в других словарях:

  • Rare earth element — Rare earth ore, shown with a United States penny for size comparison These rare …   Wikipedia

  • rare-earth — rare earth, 1. an oxide of a rare earth element: »Rare earths can be used in control rods for nuclear reactors, and also as a radiation shielding ingredient in concrete (Science News Letter). 2. = rare earth element. (Cf. ↑rare earth element)… …   Useful english dictionary

  • rare earth — rare′ earth′ n. chem. the oxide of any of the rare earth elements contained in various minerals • Etymology: 1875–80 …   From formal English to slang

  • rare-earth element — /rair errth /, Chem. any of a group of closely related metallic elements, comprising the lanthanides, scandium, and yttrium, that are chemically similar by virtue of having the same number of valence electrons. Also called rare earth metal. [1955 …   Universalium

  • rare earth — noun any element of the lanthanide series (atomic numbers 57 through 71) (Freq. 1) • Syn: ↑rare earth element, ↑lanthanoid, ↑lanthanide, ↑lanthanon • Hypernyms: ↑group, ↑grouping …   Useful english dictionary

  • rare earth — Chem. the oxide of any of the rare earth elements contained in various minerals. [1875 80] * * * …   Universalium

  • Mountain Pass rare earth mine — The Mountain Pass mine surface facilities. The upper part of the open pit is seen in the background. Location …   Wikipedia

  • Some properties of the rare-earth elements (values recommended by Ames Laboratory) part I — ▪ Table Some properties of the rare earth elements (values recommended by Ames Laboratory) part I scandium yttrium lanthanum cerium atomic number 21 39 57 58 atomic weight 44.956 88.905 138.91 140.12 colour of element silvery silvery silvery… …   Universalium

  • Oxide minerals — Oxide mineral exhibit at the Museum of Geology in South Dakota The oxide mineral class includes those minerals in which the oxide anion (O2 ) is bonded to one or more metal ions. The hydroxide bearing minerals are typically included in the oxide… …   Wikipedia

  • Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry       The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… …   Universalium

  • Earth (chemistry) — The chemical term earths was historically applied to certain chemical substances, once thought to be elements, and this name was borrowed from one of the four classical elements of Plato. Earths later turned out to be chemical compounds, albeit… …   Wikipedia

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