bastnaesite

bastnaesite
/bast"neuh suyt'/, n.
a rare-earth mineral, fluorocarbonate of lanthanum and cerium, with a waxy-yellow to reddish-brown color, commonly associated with zinc ores.
Also, bastnäsite.
[named after Bastnäs, mine in Sweden; see -ITE1]

* * *

also spelled  Bastnäsite,  

      a cerium fluoride carbonate, CeCO3(OH,F), found in contact metamorphic zones and pegmatites; cerium is commonly substituted by light rare earths, lanthanum, yttrium, and thorium. It ranges in colour from wax-yellow to reddish-brown. Bastnaesite is commonly associated with other rare-earth-bearing minerals such as allanite, cerite, and tysonite; it is often an alteration product of tysonite. Bastnaesite occurs in pegmatites near Pikes Peak, Colo. and with fluorite in Lincoln County, New Mexico; it is commercially mined at Mountain Pass, Calif. For detailed physical properties, see carbonate mineral (table).

* * *


Universalium. 2010.

Игры ⚽ Нужно решить контрольную?

Look at other dictionaries:

  • bastnaesite — bastnezitas statusas T sritis chemija apibrėžtis Mineralas. formulė (Ce,La)[F|CO₃] atitikmenys: angl. bastnaesite; bastnasite rus. бастнезит …   Chemijos terminų aiškinamasis žodynas

  • bastnaesite — noun A yellow brown mineral that is a source of several rare earth metals, especially gadolinium, samarium, and neodymium Syn: bastnäsite …   Wiktionary

  • bastnaesite — bast·naes·ite …   English syllables

  • bastnaesite — /ˈbæstnəsaɪt/ (say bastnuhsuyt) noun a fluorocarbonate of the cerium metals (CeF)CO3. Also, bastnäsite, bastnasite. {from Bastnäs, a mine in Sweden + ite1} …  

  • bastnaésite —  n.f. Fluocarbonate de cérium …   Le dictionnaire des mots absents des autres dictionnaires

  • bastnaesite — noun a yellow to brown mineral that is a source of rare earth elements • Syn: ↑bastnasite • Hypernyms: ↑mineral • Substance Meronyms: ↑cerium, ↑Ce, ↑atomic number 58, ↑ …   Useful english dictionary

  • LANTHANE ET LANTHANIDES — Le lanthane et les lanthanides forment une série de quinze éléments métalliques de propriétés chimiques très semblables, que l’on désigne aussi plus communément sous le nom, d’ailleurs impropre, de «terres rares» (parce qu’on les a d’abord… …   Encyclopédie Universelle

  • Bastnäsite — Infobox mineral name = Bastnäsite category = Carbonate mineral boxwidth = boxbgcolor = imagesize = caption = formula = (Ce,La,Y)CO3F molweight = color = Honey yellow, reddish brown habit = Tabular to equant striated crystals, also granular,… …   Wikipedia

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

  • 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

Share the article and excerpts

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