单词 | alstonite |
释义 | alstoniten. Mineralogy. A mineral consisting of a double carbonate of calcium and barium, typically occurring as strongly striated colourless or white pseudohexagonal pyramids. Cf. bromlite n.Chemical formula: BaCa(CO3)2. Crystal system: triclinic. ΘΚΠ the world > the earth > minerals > types of mineral > carbonates > [noun] > other carbonates dialogite1823 gaylussite1826 matlockite1843 cancrinite1844 alstonite1845 phosgenite1849 pistomesite1849 bromlite1868 tengerite1868 teschemacherite1868 sphaerocobaltite1877 spherocobaltite1889 otavite1906 rutherfordine1907 rutherfordite1908 spurrite1908 natrodavyne1913 loseyite1929 tilleyite1933 shortite1939 swartzite1948 norsethite1959 1845 Edinb. New Philos. Jrnl. 39 42 (table) Alstonite. 1852 H. J. Brooke & W. H. Miller Phillips's Elem. Introd. Mineral. (new ed.) 573 In alstonite its crystals, isomorphous with aragonite, cerussite, strontianite and witherite, belong to the prismatic system. 1887 Amer. Naturalist 21 764 A. Becker has analyzed alstonite and barytocalcite from Alston Moor. 1917 W. S. Bayley Descriptive Mineral. xi. 231 Both alstonite and barytocalcite occur in veins of lead ores and of barite (BaSO4). 1951 C. Palache et al. Dana's Syst. Mineral. (ed. 7) II. 219 Small amounts of Mn..are generally present in both alstonite and barytocalcite. 1998 Journal (Newcastle) (Nexis) 18 Sept. 36 Also prized was alstonite, with magnificent specimens from Fallowfield mine appearing in collections. This entry has been updated (OED Third Edition, September 2012; most recently modified version published online December 2021). < |
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