pyroxenen.

Brit.

/pʌɪˈrɒksiːn/, U.S.

/paɪˈrɑkˌsin/,

/pəˈrɑkˌsin/

Origin: A borrowing from French. Etymon: French pyroxène.

Etymology: < French pyroxène ( R. J. Haüy 1796, in Jrnl. des mines 5 269) < pyro- pyro- comb. form + ancient Greek ξένος stranger (see xeno- comb. form), so called because Haüy mistakenly considered the crystals to be accidental inclusions in volcanic glass or lava.

Mineralogy.

Originally: any of a large group of silicate minerals containing calcium and one or more other bases, usually magnesium and iron; spec. augite. In later use: any of a group of silicate minerals (inosilicates) characterized by a structure of single chains of SiO₄ tetrahedra and prismatic cleavage at nearly 90 degrees, the general formula of which is approximately XY(ZO₃)₂, where X and Y are bases and Z is aluminium or silicon.The pyroxene group contains around twenty mineral species, including aegirine, augite, diopside, enstatite, ferrosilite, jadeite, and spodumene. Crystal system: orthorhombic (orthopyroxenes) or monoclinic (clinopyroxenes). Cf. pyroxenoid n.

ΘΚΠ

the world > the earth > minerals > types of mineral > silicates > inosilicates single chain > [noun] > pyroxene

pyroxene1800

volcanite1802

vulcanite1856

1800 Philos. Mag. 7 254 He [sc. Vauquelin] has analysed the pyroxene of Ætna.

1811 J. Pinkerton Petralogy II. 475 Few fragments of augite or pyroxene.

1833 C. Lyell Princ. Geol. III. Gloss. 63 The modern Lavas of Vesuvius are characterised by a large proportion of augite (or pyroxene).

1875 J. W. Dawson Life's Dawn on Earth v. 108 White pyroxene, an anhydrous silicate of lime and magnesia.

1888 J. P. Iddings tr. Rosenbusch Microsc. Physiogr. Rock-making Minerals 202 The orthorhombic pyroxenes become transparent in various colors, according to the position of the section and to the iron percentage.

1975 D. Shelley Man. Optical Mineral. vii. 143 Most pyroxenes form rather stumpy prismatic crystals, though occasionally, as in the case of aegirine, the crystals are more elongate.

1992 B. Bova Mars 65 ‘The..meteorite looks Martian, all right,’ Jamie said. ‘Right ratio of inert gas isotopes. High pyroxene content.’

2000 Archaeology July–Aug. 38 Sigurdsson is searching for xenoliths, nodules of pyroxene that have been coughed to the surface by erupting volcanoes.

This entry has been updated (OED Third Edition, December 2007; most recently modified version published online March 2022).

单词	pyroxene
释义	pyroxenen. Brit. /pʌɪˈrɒksiːn/, U.S. /paɪˈrɑkˌsin/, /pəˈrɑkˌsin/ Origin: A borrowing from French. Etymon: French pyroxène. Etymology: < French pyroxène ( R. J. Haüy 1796, in Jrnl. des mines 5 269) < pyro- pyro- comb. form + ancient Greek ξένος stranger (see xeno- comb. form), so called because Haüy mistakenly considered the crystals to be accidental inclusions in volcanic glass or lava. Mineralogy. Originally: any of a large group of silicate minerals containing calcium and one or more other bases, usually magnesium and iron; spec. augite. In later use: any of a group of silicate minerals (inosilicates) characterized by a structure of single chains of SiO₄ tetrahedra and prismatic cleavage at nearly 90 degrees, the general formula of which is approximately XY(ZO₃)₂, where X and Y are bases and Z is aluminium or silicon.The pyroxene group contains around twenty mineral species, including aegirine, augite, diopside, enstatite, ferrosilite, jadeite, and spodumene. Crystal system: orthorhombic (orthopyroxenes) or monoclinic (clinopyroxenes). Cf. pyroxenoid n. ΘΚΠ the world > the earth > minerals > types of mineral > silicates > inosilicates single chain > [noun] > pyroxene pyroxene1800 volcanite1802 vulcanite1856 1800 Philos. Mag. 7 254 He [sc. Vauquelin] has analysed the pyroxene of Ætna. 1811 J. Pinkerton Petralogy II. 475 Few fragments of augite or pyroxene. 1833 C. Lyell Princ. Geol. III. Gloss. 63 The modern Lavas of Vesuvius are characterised by a large proportion of augite (or pyroxene). 1875 J. W. Dawson Life's Dawn on Earth v. 108 White pyroxene, an anhydrous silicate of lime and magnesia. 1888 J. P. Iddings tr. Rosenbusch Microsc. Physiogr. Rock-making Minerals 202 The orthorhombic pyroxenes become transparent in various colors, according to the position of the section and to the iron percentage. 1975 D. Shelley Man. Optical Mineral. vii. 143 Most pyroxenes form rather stumpy prismatic crystals, though occasionally, as in the case of aegirine, the crystals are more elongate. 1992 B. Bova Mars 65 ‘The..meteorite looks Martian, all right,’ Jamie said. ‘Right ratio of inert gas isotopes. High pyroxene content.’ 2000 Archaeology July–Aug. 38 Sigurdsson is searching for xenoliths, nodules of pyroxene that have been coughed to the surface by erupting volcanoes. This entry has been updated (OED Third Edition, December 2007; most recently modified version published online March 2022). < n.1800
随便看	θ9079 θ90790 θ90791 θ90792 θ90793 θ90794 θ90795 θ90796 θ90797 θ90798 θ90799 θ908 θ9080 θ90800 θ90801 θ90802 θ90803 θ90804 θ90805 θ90806 θ90807 θ90808 θ90809 θ9081 θ90810