单词 | melilite |
释义 | meliliten. Mineralogy. A tetragonal silicate of calcium and aluminium, occurring as honey-yellow crystals in igneous and metamorphic rocks and many slags. Also: any of a group of related minerals which includes this species, having the general formula A2BZSiO7 (where A = Na or Ca, B = Al, Be, Mg, or Zn, and Z = Al or Si). ΘΚΠ the world > the earth > minerals > types of mineral > oxides and hydroxides > [noun] > other oxides > oxides of two elements honey stone1792 bismuth-ochre1796 mellilite1796 melilithus1800 mellite1801 melilite1814 manganesite1823 heterocline1844 romeine1844 crednerite1849 roméite1849 whewellite1852 manganite1865 magnesioferrite1868 oxammite1870 molybdomenite1885 lautarite1892 tripuhyite1897 coronadite1904 hollandite1906 melanovanadite1921 quenselite1926 salesite1939 yttrotungstite1950 ordoñezite1953 the world > the earth > minerals > types of mineral > silicates > sorosilicates > [noun] > melilite melilite1814 somervillite1824 humboldtilite1826 zurlite1826 1814 A. Aikin Man. Mineral. 125 Melilite..gives fire with steel. 1821 R. Jameson Man. Mineral. 325 Mellilite. 1823 W. Phillips Elem. Introd. Mineral. (ed. 3) 208 Melilite..has only been found at Capo di Bove near Rome, in the fissures of a compact black lava. 1879 F. Rutley Study of Rocks xiii. 255 Apatite,..melilite and garnet are among the more common accessory minerals [in nepheline basalt]. 1902 H. A. Miers Mineral. Tables 543 The Melilite Group..Melilite. Na2Ca11Al4(SiO4)9. 1954 C. E. Tilley et al. Harker's Petrol. (ed. 8) xi. 128 Melilite is the characteristic mineral of the alnöites. 1978 J. Beretka Surv. Major Industr. Wastes & By-products Austral. ii. 22 The principal crystalline phase present is mellilite, which is a term applied to any solid solution in the series extending from akermanite (2CaO.MgO.2SiO2) to gehlenite (2CaO.Al2O3.SiO2). 1987 R. L. Bates & J. A. Jackson Gloss. Geol. (ed. 3) 410/2 The melilites of volcanic rocks are usually classed as feldspathoids. This entry has been updated (OED Third Edition, June 2001; most recently modified version published online March 2022). < |
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