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A reddish-brown phosphate mineral containing several rare-earth elements, (Ce, La, Nd, Y, Th)PO4, important as a source of cerium and thorium.

[Greek monazein, to live alone; see monastery + -ite.]


(Minerals) a yellow to reddish-brown mineral consisting of a phosphate of thorium, cerium, and lanthanum in monoclinic crystalline form
[C19: from German, from Greek monazein to live alone, so called because of its rarity]


(ˈmɒn əˌzaɪt)

a reddish brown mineral, a phosphate of cerium, lanthanum, and thorium, (Ce, La, Th)PO4: the principal ore of thorium.
[< German Monazit (1829)]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.monazite - a reddish-brown mineral containing rare earth metals; an important source of thorium and cerium
atomic number 58, Ce, cerium - a ductile grey metallic element of the lanthanide series; used in lighter flints; the most abundant of the rare-earth group
atomic number 63, Eu, europium - a bivalent and trivalent metallic element of the rare earth group
atomic number 60, Nd, neodymium - a yellow trivalent metallic element of the rare earth group; occurs in monazite and bastnasite in association with cerium and lanthanum and praseodymium
atomic number 59, Pr, praseodymium - a soft yellowish-white trivalent metallic element of the rare earth group; can be recovered from bastnasite or monazite by an ion-exchange process
atomic number 62, samarium, Sm - a grey lustrous metallic element of the rare earth group; is used in special alloys; occurs in monazite and bastnasite
atomic number 65, Tb, terbium - a metallic element of the rare earth group; used in lasers; occurs in apatite and monazite and xenotime and ytterbite
atomic number 90, thorium, Th - a soft silvery-white tetravalent radioactive metallic element; isotope 232 is used as a power source in nuclear reactors; occurs in thorite and in monazite sands
atomic number 69, thulium, Tm - a soft silvery metallic element of the rare earth group; isotope 170 emits X-rays and is used in small portable X-ray machines; it occurs in monazite and apatite and xenotime
atomic number 70, Yb, ytterbium - a soft silvery metallic element; a rare earth of the lanthanide series; it occurs in gadolinite and monazite and xenotime
mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition
References in periodicals archive ?
Tenders are invited for Acid/alkali proof brick lining including supply of materials at site for monazite processing plant at orissa sands complex
As a crucial strategic resource, it is mainly contained in bastnaesite, xenotime, monazite, and other minerals.
Authigenic monazite and detrital zircon dating from the Proterozoic Rocky Cape Group, Tasmania: links to the Belt-Purcell Supergroup, North America.
TV figured out how to monazite stature and influence.
Monazite, which has the consistency of sand, contains rare earth metals, which are used in the manufacture of high-tech components.
Areas with large amounts of thorium-rich monazite sands tip the scales when it comes to background radiation.
Identification of multiple rare earths and associated elements in raw monazite sands by laser-induced breakdown spectroscopy.
Limited, which controls the Steenkampskraal monazite mine in South
Thorium is existed naturally in a tetravalent cation only adsorbed onto normal colloidal bulk matters or founding in natural residue either in detrital minerals like monazite, rutile and thorianite, but the most paramount provenance of thorium is the monazite (Syed, 1999).
5] depletion could have been due to the lower amount of accessory phases, such as apatite and monazite, compared to PAAS (Ramasamy et al.
In India there are quite a few monazite sand bearing placer deposits causing high background radiation along its coastline.