monaziten.

Brit.

/ˈmɒnəzʌɪt/, U.S.

/ˈmɑnəˌzaɪt/

Origin: A borrowing from German. Etymon: German Monazit.

Etymology: < German Monazit (A. Breithaupt 1829, in Jrnl. f. Chem. u. Physik 55 301) < Hellenistic Greek μονάζειν to be solitary (see monastery n.), on account of its rarity + German -it -ite suffix¹.

Mineralogy.

A commercially important monoclinic phosphate of cerium, lanthanum, other rare earth elements, and thorium, occurring typically as small brownish crystals, often in detrital sands associated with granites and gneisses. Now frequently with a suffix indicating the predominant rare earth element. Also: any of a group of minerals of similar composition.

ΘΚΠ

the world > the earth > minerals > types of mineral > phosphates > [noun] > rare earth phosphates

turnerite1823

monazite1836

xenotime1844

cryptolite1846

churchite1865

urdite1868

rhabdophane1878

scovillite1883

rhabdophanite1892

florencite1899

1836 T. Thomson Outl. Mineral. I. 672 Monazite... This name was given by Breithaupt to a mineral brought by Fielder from the Uralian mountains.

1868 J. D. Dana Syst. Mineral. (ed. 5) 540 Turnerite is isomorphous with monazite, and like it in cleavage and color.

1903 Edinb. Rev. Oct. 388 The North Carolinian monazite.

1920 Discovery May 143/1 The Germans, in their search for a cheap source of thorium, discovered monazite in Brazil.

1948 Nature 14 Feb. 241/1 The preparation of chlorides of the rare-earth elements directly from monazite by chlorination in the presence of carbon possesses certain advantages over conventional methods.

1989 C. Caufield Multiple Exposures (1990) xix. 195 The beaches, composed of monazite sand, a mineral naturally high in radioactive elements, are hundreds of times more radioactive than most soils.

1993 A. M. Clark Hey's Mineral Index (ed. 3) 467/1 Monazite-(La), (La,Ce,Nd)PO₄. Monazite group. Name given to those monazites with La > Ce.

This entry has been updated (OED Third Edition, September 2002; most recently modified version published online March 2022).

单词	monazite
释义	monaziten. Brit. /ˈmɒnəzʌɪt/, U.S. /ˈmɑnəˌzaɪt/ Origin: A borrowing from German. Etymon: German Monazit. Etymology: < German Monazit (A. Breithaupt 1829, in Jrnl. f. Chem. u. Physik 55 301) < Hellenistic Greek μονάζειν to be solitary (see monastery n.), on account of its rarity + German -it -ite suffix¹. Mineralogy. A commercially important monoclinic phosphate of cerium, lanthanum, other rare earth elements, and thorium, occurring typically as small brownish crystals, often in detrital sands associated with granites and gneisses. Now frequently with a suffix indicating the predominant rare earth element. Also: any of a group of minerals of similar composition. ΘΚΠ the world > the earth > minerals > types of mineral > phosphates > [noun] > rare earth phosphates turnerite1823 monazite1836 xenotime1844 cryptolite1846 churchite1865 urdite1868 rhabdophane1878 scovillite1883 rhabdophanite1892 florencite1899 1836 T. Thomson Outl. Mineral. I. 672 Monazite... This name was given by Breithaupt to a mineral brought by Fielder from the Uralian mountains. 1868 J. D. Dana Syst. Mineral. (ed. 5) 540 Turnerite is isomorphous with monazite, and like it in cleavage and color. 1903 Edinb. Rev. Oct. 388 The North Carolinian monazite. 1920 Discovery May 143/1 The Germans, in their search for a cheap source of thorium, discovered monazite in Brazil. 1948 Nature 14 Feb. 241/1 The preparation of chlorides of the rare-earth elements directly from monazite by chlorination in the presence of carbon possesses certain advantages over conventional methods. 1989 C. Caufield Multiple Exposures (1990) xix. 195 The beaches, composed of monazite sand, a mineral naturally high in radioactive elements, are hundreds of times more radioactive than most soils. 1993 A. M. Clark Hey's Mineral Index (ed. 3) 467/1 Monazite-(La), (La,Ce,Nd)PO₄. Monazite group. Name given to those monazites with La > Ce. This entry has been updated (OED Third Edition, September 2002; most recently modified version published online March 2022). < n.1836
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