labradoriten.

Brit.

/ˈlabrədɔːrʌɪt/, U.S.

/ˈlæbrəˌdɔrˌaɪt/

Origin: From a proper name, combined with an English element; perhaps modelled on a French lexical item, or perhaps modelled on a German lexical item. Etymons: proper name Labrador , -ite suffix¹.

Etymology: < Labrador (see Labrador n.) + -ite suffix¹, after French labradorite (1803 or earlier) or its model German Labradorstein ( A. G. Werner Versuch einer Mineralogie I. (1780) i. 150), so called because it was first found in Labrador. N.E.D. (1901) gives the pronunciation as (læbrădǫ·rəit) /læbrəˈdɒraɪt/.

Mineralogy.

A mineral of the plagioclase feldspar group, typically greyish-white and sometimes showing blue iridescence, which occurs in igneous and metamorphic rocks (esp. basalt and gabbro). Cf. earlier Labrador spar n. at Labrador n. 2d, Labrador stone n. at Labrador n. 2a.Labradorite is an aluminosilicate of calcium and sodium; (Ca,Na)(Si,Al)₄O₈. Crystal system: triclinic.

ΘΚΠ

society > occupation and work > materials > raw material > gem or precious stone > feldspars > [noun]

sunstone1652

labradorite1814

Amazon-stone1836

silicite1843

the world > the earth > minerals > types of mineral > silicates > tectosilicate > [noun] > feldspar > plagioclase > labradorite

Labrador stone1779

Labrador1786

Labrador feldspar1794

Labrador spar1799

labradorite1814

silicite1843

1814 T. Allan Mineral. Nomencl. 18 Opalescent [felspar], Labradore stone..Labradorite.

1850 C. G. B. Daubeny Introd. Atomic Theory (ed. 2) xii. 417 Recent lavas..are made up principally, of labradorite, a silicate with 1 atom only of acid, and of hornblende or augite.

1912 H. G. Wells Marriage iv. 498 An enormous paper-weight of that iridescent Labradorite.

1966 R. Webster Pract. Gemmol. (ed. 4) xi. 120 Black moonstone is a labradorite with a bluish flash and which shows a cat's-eye effect when cut in the cabochon style.

2009 Time Out N.Y. 24 Sept. 36/1 The gem-seekers were gallivanting all over the globe in search of nature's prettiest stones to add to their collection, which currently includes a labradorite necklace.

Derivatives

labradoˈritic adj. of the nature of or containing labradorite.

ΚΠ

1837 Amer. Jrnl. Sci. 32 304 This labradoritic formation commences at the valley of the Schroon river, and extends westerly.

1907 Bi-monthly Bull. Amer. Inst. Mining Engineers May 934 The various gabbro and labradoritic rocks of the eastern Adirondacks.

2008 T. Schlüter Geol. Atlas Afr. (ed. 2) iv. 202/1 The lavas are generally labradoritic basalts, almost without olivines.

This entry has been updated (OED Third Edition, March 2017; most recently modified version published online March 2022).

单词	labradorite
释义	labradoriten. Brit. /ˈlabrədɔːrʌɪt/, U.S. /ˈlæbrəˌdɔrˌaɪt/ Origin: From a proper name, combined with an English element; perhaps modelled on a French lexical item, or perhaps modelled on a German lexical item. Etymons: proper name Labrador , -ite suffix¹. Etymology: < Labrador (see Labrador n.) + -ite suffix¹, after French labradorite (1803 or earlier) or its model German Labradorstein ( A. G. Werner Versuch einer Mineralogie I. (1780) i. 150), so called because it was first found in Labrador. N.E.D. (1901) gives the pronunciation as (læbrădǫ·rəit) /læbrəˈdɒraɪt/. Mineralogy. A mineral of the plagioclase feldspar group, typically greyish-white and sometimes showing blue iridescence, which occurs in igneous and metamorphic rocks (esp. basalt and gabbro). Cf. earlier Labrador spar n. at Labrador n. 2d, Labrador stone n. at Labrador n. 2a.Labradorite is an aluminosilicate of calcium and sodium; (Ca,Na)(Si,Al)₄O₈. Crystal system: triclinic. ΘΚΠ society > occupation and work > materials > raw material > gem or precious stone > feldspars > [noun] sunstone1652 labradorite1814 Amazon-stone1836 silicite1843 the world > the earth > minerals > types of mineral > silicates > tectosilicate > [noun] > feldspar > plagioclase > labradorite Labrador stone1779 Labrador1786 Labrador feldspar1794 Labrador spar1799 labradorite1814 silicite1843 1814 T. Allan Mineral. Nomencl. 18 Opalescent [felspar], Labradore stone..Labradorite. 1850 C. G. B. Daubeny Introd. Atomic Theory (ed. 2) xii. 417 Recent lavas..are made up principally, of labradorite, a silicate with 1 atom only of acid, and of hornblende or augite. 1912 H. G. Wells Marriage iv. 498 An enormous paper-weight of that iridescent Labradorite. 1966 R. Webster Pract. Gemmol. (ed. 4) xi. 120 Black moonstone is a labradorite with a bluish flash and which shows a cat's-eye effect when cut in the cabochon style. 2009 Time Out N.Y. 24 Sept. 36/1 The gem-seekers were gallivanting all over the globe in search of nature's prettiest stones to add to their collection, which currently includes a labradorite necklace. Derivatives labradoˈritic adj. of the nature of or containing labradorite. ΚΠ 1837 Amer. Jrnl. Sci. 32 304 This labradoritic formation commences at the valley of the Schroon river, and extends westerly. 1907 Bi-monthly Bull. Amer. Inst. Mining Engineers May 934 The various gabbro and labradoritic rocks of the eastern Adirondacks. 2008 T. Schlüter Geol. Atlas Afr. (ed. 2) iv. 202/1 The lavas are generally labradoritic basalts, almost without olivines. This entry has been updated (OED Third Edition, March 2017; most recently modified version published online March 2022). < n.1814
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