peridotiten.

Brit.

/ˈpɛrᵻdətʌɪt/, U.S.

/pəˈrɪdəˌtaɪt/

Forms: 1800s peridotyte, 1800s– peridotite.

Origin: Formed within English, by derivation. Etymons: peridot n., -ite suffix¹.

Etymology: < peridot n. + -ite suffix¹. In sense 1 after French péridotite (P. L. A. Cordier & C. D. d'Orbigny Descr. des Roches (1868) ii. 118). In sense 2 after German Peridotit (H. Rosenbusch Mikrosk. Physiogr. (1877) II. 522).

Geology.

†1. A dolerite containing a high proportion of olivine. Obsolete.

ΚΠ

1869 Geol. Mag. 6 251 In such sediments..we find the representatives of eruptive rocks like peridotite.

1874 J. D. Dana Man. Geol. (ed. 2) ii. ii. 78 Peridotyte. Of the color, specific gravity, and texture of doleryte, and having the same constituents, with the addition of disseminated grains of chrysolite (olivine)... Often called chrysolitic doleryte.

2. Any of a group of plutonic rocks which contain little or no feldspar but substantial olivine (usually with pyroxene or other mafic minerals) and which are major constituents of the earth's crust.

ΘΚΠ

the world > the earth > structure of the earth > constituent materials > rock > igneous rock > [noun] > plutonic rocks > peridotites

wehrlite1861

harrisite1865

peridotite1882

cortlandtite1886

harzburgite1890

koswite1901

the world > the earth > minerals > types of mineral > silicates > nesosilicates > [noun] > olivine group > olivine or chrysolites

topaz1567

olivine1794

chrysolite1813

hyalosiderite1824

glinkite1849

amiantus1863

titanolivine1880

peridotite1882

neochrysolite1884

iddingsite1893

1882 A. Geikie Text-bk. Geol. 151 A series of crystalline rocks composed essentially of olivine, with usually one or two other magnesium silicates..has been classed by Rosenbusch under the general name of Peridotites.

1931 S. J. Shand Study of Rocks vii. 114 Kimberlite.., the matrix of all African diamonds.., is a highly serpentinised peridotite.

1940 F. F. Grout Kemp's Handbk. Rocks (ed. 6) v. 88 At the extreme of peridotites we have nearly pure olivine rocks, called dunites.

1966 R. Webster Pract. Gemmol. (ed. 4) vi. 109 These pipes [sc. in diamond mines] are filled with a rock called ‘peridotite’, a bluish-coloured rock with a high iron content termed the ‘blue ground’.

1993 Equinox Oct. 65/1 The stone in the Japanese garden..is peridotite, whose almost luminescent grass-green surfaces shine between areas of granite-grey.

This entry has been updated (OED Third Edition, December 2005; most recently modified version published online March 2022).

单词	peridotite
释义	peridotiten. Brit. /ˈpɛrᵻdətʌɪt/, U.S. /pəˈrɪdəˌtaɪt/ Forms: 1800s peridotyte, 1800s– peridotite. Origin: Formed within English, by derivation. Etymons: peridot n., -ite suffix¹. Etymology: < peridot n. + -ite suffix¹. In sense 1 after French péridotite (P. L. A. Cordier & C. D. d'Orbigny Descr. des Roches (1868) ii. 118). In sense 2 after German Peridotit (H. Rosenbusch Mikrosk. Physiogr. (1877) II. 522). Geology. †1. A dolerite containing a high proportion of olivine. Obsolete. ΚΠ 1869 Geol. Mag. 6 251 In such sediments..we find the representatives of eruptive rocks like peridotite. 1874 J. D. Dana Man. Geol. (ed. 2) ii. ii. 78 Peridotyte. Of the color, specific gravity, and texture of doleryte, and having the same constituents, with the addition of disseminated grains of chrysolite (olivine)... Often called chrysolitic doleryte. 2. Any of a group of plutonic rocks which contain little or no feldspar but substantial olivine (usually with pyroxene or other mafic minerals) and which are major constituents of the earth's crust. ΘΚΠ the world > the earth > structure of the earth > constituent materials > rock > igneous rock > [noun] > plutonic rocks > peridotites wehrlite1861 harrisite1865 peridotite1882 cortlandtite1886 harzburgite1890 koswite1901 the world > the earth > minerals > types of mineral > silicates > nesosilicates > [noun] > olivine group > olivine or chrysolites topaz1567 olivine1794 chrysolite1813 hyalosiderite1824 glinkite1849 amiantus1863 titanolivine1880 peridotite1882 neochrysolite1884 iddingsite1893 1882 A. Geikie Text-bk. Geol. 151 A series of crystalline rocks composed essentially of olivine, with usually one or two other magnesium silicates..has been classed by Rosenbusch under the general name of Peridotites. 1931 S. J. Shand Study of Rocks vii. 114 Kimberlite.., the matrix of all African diamonds.., is a highly serpentinised peridotite. 1940 F. F. Grout Kemp's Handbk. Rocks (ed. 6) v. 88 At the extreme of peridotites we have nearly pure olivine rocks, called dunites. 1966 R. Webster Pract. Gemmol. (ed. 4) vi. 109 These pipes [sc. in diamond mines] are filled with a rock called ‘peridotite’, a bluish-coloured rock with a high iron content termed the ‘blue ground’. 1993 Equinox Oct. 65/1 The stone in the Japanese garden..is peridotite, whose almost luminescent grass-green surfaces shine between areas of granite-grey. This entry has been updated (OED Third Edition, December 2005; most recently modified version published online March 2022). < n.1869
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