nephelinen.

Brit.

/ˈnɛfəliːn/,

/ˈnɛfl̩iːn/, U.S.

/ˈnɛfəˌlin/

Forms: 1800s– nephaline (irregular), 1800s– nephelin (now rare), 1800s– nepheline, 1800s– nephiline (irregular).

Origin: A borrowing from Greek, combined with an English element; modelled on a French lexical item. Etymons: Greek νεϕέλη , -ine suffix⁴.

Etymology: < ancient Greek νεϕέλη cloud (see nephelo- comb. form) + -ine suffix⁴, after French néphéline (R. J. Haüy Traité min. (1801) III. 186 as népheline), so named because its fragments are rendered cloudy by immersion in nitric acid.

Mineralogy. A trigonal aluminosilicate of sodium and often also potassium, which belongs to the feldspathoid group of minerals and usually occurs as colourless, greenish, or brownish crystals or grains in igneous rocks.

ΘΚΠ

the world > the earth > minerals > types of mineral > silicates > tectosilicate > [noun] > feldspathoid > nepheline

sommite1805

gabbronite1808

nepheline1814

nephelite1868

1814 J. Black tr. J. J. Berzelius Attempt Sci. Syst. Mineral. 45 The composition of nephelin, in which alumina and silica contain equal oxygen.

1818 Philos. Trans. (Royal Soc.) 108 236 By similar measurements of the rings in zircon..,nepheline, muriate of lime, [etc.]..,I have found that the expression Sin.² ϕ applies..to all these crystals.

1852 T. Ross tr. A. von Humboldt Personal Narr. Trav. Amer. I. ii. 51 We could discover neither nepheline, leucite, nor feldspar.

1877 Nature 1 Mar. 384/1 Mineralogists have often been troubled to distinguish with certainty between apatite and nephelin.

1896 J. F. Kemp Handbk. Rocks i. 6 The feldspars, together with the feldspathoids nepheline and leucite, are the most important of the rock-making minerals in their relations to the classification of rocks.

1954 W. C. Smith in Brit. Antarctic ‘Terra Nova’ Expedition 1910, Nat. Hist. Rep.: Geol. 2 iii. 41 The kenytes of Mount Kenya actually contain large insets of nepheline.

1997 Nature 6 Nov. 14/3 That might explain the order-of-magnitude difference in viscosity..at 1,500 °C between nepheline (NaAlSiO₄) and anorthite.

Compounds

Geology. In the names of rock varieties containing nepheline, as nepheline-basalt, nepheline-gabbro, etc. See also nepheline-syenite n.

ΚΠ

1840 London, Edinb., & Dublin Philos. Mag. 17 117 The elæoliths, whether in syenite, miascite, nepheline-rock, albite, &c., do not occur accompanied by free quartz.

1863 J. D. Dana Man. Geol. 89 Nephelinite, nephelin dolerite.

1888 J. J. H. Teall Brit. Petrogr. 360 The olivine-bearing rocks [of nephelinite] are termed nepheline-basalts.

1940 F. F. Grout Kemp's Handbk. Rocks (ed. 6) 288 Theralite, dark nepheline gabbro.

1963 W. A. Deer et al. Rock-forming Minerals II. 109 Titanaugites are the typical pyroxenes of basic alkaline rocks, e.g. teschenite, essexite and nepheline dolerite.

1970 Nature 28 Nov. 850/2 The nepheline gabbro..is a subangular block coated by a thin crust of MnO₂... The texture is ophitic and miarolitic.

1990 Jrnl. Petrol. 31 1206 Compared with similarly mafic alkaline basalts from other parts of the world, the nepheline basanites and transitional nephelinites in the Oatlands district are unusually rich in alkali.

This entry has been updated (OED Third Edition, September 2003; most recently modified version published online March 2022).

单词	nepheline
释义	nephelinen. Brit. /ˈnɛfəliːn/, /ˈnɛfl̩iːn/, U.S. /ˈnɛfəˌlin/ Forms: 1800s– nephaline (irregular), 1800s– nephelin (now rare), 1800s– nepheline, 1800s– nephiline (irregular). Origin: A borrowing from Greek, combined with an English element; modelled on a French lexical item. Etymons: Greek νεϕέλη , -ine suffix⁴. Etymology: < ancient Greek νεϕέλη cloud (see nephelo- comb. form) + -ine suffix⁴, after French néphéline (R. J. Haüy Traité min. (1801) III. 186 as népheline), so named because its fragments are rendered cloudy by immersion in nitric acid. Mineralogy. A trigonal aluminosilicate of sodium and often also potassium, which belongs to the feldspathoid group of minerals and usually occurs as colourless, greenish, or brownish crystals or grains in igneous rocks. ΘΚΠ the world > the earth > minerals > types of mineral > silicates > tectosilicate > [noun] > feldspathoid > nepheline sommite1805 gabbronite1808 nepheline1814 nephelite1868 1814 J. Black tr. J. J. Berzelius Attempt Sci. Syst. Mineral. 45 The composition of nephelin, in which alumina and silica contain equal oxygen. 1818 Philos. Trans. (Royal Soc.) 108 236 By similar measurements of the rings in zircon..,nepheline, muriate of lime, [etc.]..,I have found that the expression Sin.² ϕ applies..to all these crystals. 1852 T. Ross tr. A. von Humboldt Personal Narr. Trav. Amer. I. ii. 51 We could discover neither nepheline, leucite, nor feldspar. 1877 Nature 1 Mar. 384/1 Mineralogists have often been troubled to distinguish with certainty between apatite and nephelin. 1896 J. F. Kemp Handbk. Rocks i. 6 The feldspars, together with the feldspathoids nepheline and leucite, are the most important of the rock-making minerals in their relations to the classification of rocks. 1954 W. C. Smith in Brit. Antarctic ‘Terra Nova’ Expedition 1910, Nat. Hist. Rep.: Geol. 2 iii. 41 The kenytes of Mount Kenya actually contain large insets of nepheline. 1997 Nature 6 Nov. 14/3 That might explain the order-of-magnitude difference in viscosity..at 1,500 °C between nepheline (NaAlSiO₄) and anorthite. Compounds Geology. In the names of rock varieties containing nepheline, as nepheline-basalt, nepheline-gabbro, etc. See also nepheline-syenite n. ΚΠ 1840 London, Edinb., & Dublin Philos. Mag. 17 117 The elæoliths, whether in syenite, miascite, nepheline-rock, albite, &c., do not occur accompanied by free quartz. 1863 J. D. Dana Man. Geol. 89 Nephelinite, nephelin dolerite. 1888 J. J. H. Teall Brit. Petrogr. 360 The olivine-bearing rocks [of nephelinite] are termed nepheline-basalts. 1940 F. F. Grout Kemp's Handbk. Rocks (ed. 6) 288 Theralite, dark nepheline gabbro. 1963 W. A. Deer et al. Rock-forming Minerals II. 109 Titanaugites are the typical pyroxenes of basic alkaline rocks, e.g. teschenite, essexite and nepheline dolerite. 1970 Nature 28 Nov. 850/2 The nepheline gabbro..is a subangular block coated by a thin crust of MnO₂... The texture is ophitic and miarolitic. 1990 Jrnl. Petrol. 31 1206 Compared with similarly mafic alkaline basalts from other parts of the world, the nepheline basanites and transitional nephelinites in the Oatlands district are unusually rich in alkali. This entry has been updated (OED Third Edition, September 2003; most recently modified version published online March 2022). < n.1814
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