Rare-earth mineral

Rare-earth mineral

A rare-earth mineral is a mineral whose principal element is a rare earth element. Yttrium is found in almost all rare earth minerals. Rare earth minerals are usually found in association with alkaline to per-alkaline igneous complexes, in pegmatites associated with alkaline magmas and in or associated with carbonatite intrusives. Perovskite mineral phases are common hosts to rare earth elements within the alkaline complexes. Mantle derived carbonate melts also are carriers of the rare earths. Hydrothermal deposits associated with alkaline magmatism contain a variety of rare earth minerals.

The following includes the relatively common hydrothermal rare earth minerals and minerals which often contain significant rare earth substitution:
*aeschynite
*allanite
*apatite
*bastnäsite
*britholite
*brockite
*cerite
*fluocerite
*fluorite
*gadolinite
*monazite
*parisite
*stillwellite
*synchisite
*titanite
*xenotime
*zircon
*zirconolite

References

* Jones, Adrian P., Francis Wall and C. Terry Williams, esd. (1996) "Rare Earth Minerals: Chemistry, origin and ore deposits," The Mineralogy Society Series #7, 372 pp. ISBN 978-0-412-61030-1


Wikimedia Foundation. 2010.

Игры ⚽ Поможем сделать НИР

Look at other dictionaries:

  • rare earth mineral — noun A mineral which contains one or more rare earth elements as major metal constituents …   Wiktionary

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

  • rare earth — UK US noun [C or U] (also rare earth element, rare earth metal) NATURAL RESOURCES ► one of a group of metal chemical elements that are difficult to find in large quantities, and are important for technology and manufacturing: »Rare earths are key …   Financial and business terms

  • 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

  • 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

  • rare — [ rar ] adj. • 1377; rere adj. fém. v. 1236; lat. rarus 1 ♦ (Généralt après le nom) Qui se rencontre peu souvent, dont il existe peu d exemplaires. Objet rare. Chercher une chose rare (cf. Mouton à cinq pattes, merle blanc). Pierres rares. ⇒… …   Encyclopédie Universelle

  • mineral deposit — Introduction       aggregate of a mineral in an unusually high concentration.       About half of the known chemical elements (chemical element) possess some metallic (metal) properties. The term metal, however, is reserved for those chemical… …   Universalium

  • 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 — /errth/, n. 1. (often cap.) the planet third in order from the sun, having an equatorial diameter of 7926 mi. (12,755 km) and a polar diameter of 7900 mi. (12,714 km), a mean distance from the sun of 92.9 million mi. (149.6 million km), and a… …   Universalium

  • Mineral — For other uses, see Mineral (disambiguation). An assortment of minerals. A mineral is a naturally occurring …   Wikipedia

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”