单词 | ureilite |
释义 | ureiliten. Geology. Any of a group of calcium-poor achondrite meteorites that consist mainly of olivine and pigeonite. ΘΚΠ the world > the universe > constellation > comet or meteor > meteor > [noun] > meteorite > achondrite > types of eucrite1881 howardite1881 nakhlite1916 ureilite1916 the world > the earth > structure of the earth > constituent materials > stone > a stone > [noun] > meteorite > other meteorites air-stone1608 iron1802 aerolite1810 aerolith1811 uranolite1815 star-glint1825 brontolith1860 aerosiderite1863 aerosiderolite1863 pallasite1863 siderolite1863 siderite1866 mesosiderite1868 howardite1881 chondrite1883 oligosiderite1883 plessite1885 diogenite1895 achondrite1904 octahedrite1905 nakhlite1916 ureilite1916 stony-iron1918 micrometeorite1949 1889 Jrnl. Chem. Soc. 56 225 The authors find, after comparison with known classes of aerolites, that the meteorite described above differs from all of them in many points, and propose to name this form ureïlithe.] 1916 Mineral Mag. 18 38 The ureilites consist of a coarsely crystalline aggregate of olivine and monoclinic pyroxene cemented together by a film of nickel-iron and carbonaceous matter. 1962 B. Mason Meteorites 111 The ureilites form a unique group of three meteorites, quite distinct from all other achondrites. 1971 I. G. Gass et al. Understanding Earth viii. 116/1 The presence of diamond in the small group of ureilites appears to be due to extraterrestrial shock effects. This entry has not yet been fully updated (first published 1986; most recently modified version published online June 2018). < n.1916 |
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