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Inorganic Chemicals > Elements > Metals, Rare Earth
Inorganic Chemicals > Metals > Metals, Rare Earth

Preferred term

Metals, Rare Earth  

Type

  • Topical Descriptor

Broader concept

Narrower concepts

Entry terms

  • Earth Metal, Rare
  • Metal, Rare Earth
  • Rare Earth Metal
  • Rare Earth Metals

Note

  • general or unspecified; prefer specifics

Scope note

  • A group of elements that include SCANDIUM; YTTRIUM; and the LANTHANOID SERIES ELEMENTS. Historically, the rare earth metals got their name from the fact that they were never found in their pure elemental form, but as an oxide. In addition, they were very difficult to purify. They are not truly rare and comprise about 25% of the metals in the earth's crust.

History note

  • 76; was NON MESH before 1976

In other languages

URI

http://www.yso.fi/onto/mesh/D008674

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