monazite


monazite
/mon"euh zuyt'/, n.
a reddish- or yellowish-brown mineral, a phosphate of cerium and lanthanum, (Ce,La)PO4: the principal ore of thorium.
[1830-40; < G Monazit, equiv. to monaz- ( < Gk monázein to be alone; see MON-) + -it -ITE1]

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      phosphate mineral, cerium and lanthanum phosphate [(Ce, La)PO4], that is the major commercial source of cerium. Occurring as small, brown, resinous, rather heavy crystals in granitic and gneissic rocks and their detritus (called monazite sands), monazite frequently contains 10–12 percent thorium dioxide (ThO2) and thus represents a major commercial source of thorium as well. Monazite is mined in Brazil, Norway, Madagascar, Sri Lanka, India, and North Carolina. For detailed physical properties, see phosphate mineral (table).

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Universalium. 2010.

Look at other dictionaries:

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  • Monazite — Mon a*zite (m[o^]n [.a]*z[imac]t), n. [From Gr. mona zein to be solitary, in allusion to its isolated crystals.] (Min.) A mineral occurring usually in small isolated crystals, a phosphate of the cerium metals. [1913 Webster] …   The Collaborative International Dictionary of English

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  • monazite — [män′ə zīt΄] n. [Ger monazit < Gr monazein, to be alone (see MONASTERY) + Ger it, ITE1: so named because of its isolated crystals] a yellow or brownish red native phosphate of the rare earth elements, a major source of thorium, cerium,… …   English World dictionary

  • Monazite — Monazit Chemische Formel siehe Einzelminerale Mineralklasse Phosphate, Arsenate, Vanadate 8.AD.50 (8. Aufl.: VII/A.15 (Monazit Gruppe)) (nach Strunz) 38.4.3 (Monazit Gruppe) (nach Dan …   Deutsch Wikipedia

  • monazite — monacitas statusas T sritis chemija apibrėžtis Mineralas. formulė (Ce,La,Nd,Th)[PO₄] atitikmenys: angl. monazite rus. монацит …   Chemijos terminų aiškinamasis žodynas

  • monazite — noun Etymology: German Monazit, from Greek monazein Date: 1836 a yellow to red or brown mineral that is a phosphate of thorium and various rare earth elements and occurs especially in sand and gravel deposits …   New Collegiate Dictionary

  • monazite — noun any of a range of reddish brown minerals that are mixed phosphates of the lighter rare earth elements lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium and yt …   Wiktionary


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