英语词汇“akermanite”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	akermanite
释义	akermanite, n. Min.\|ˈækəmənaɪt\| [ad. G. Åkermanit (coined by I. H. L. Vogt 1890, in Arch. for Math. og Naturvidenskab XIII. 323), f. the name of Richard Åkerman, 19th-cent. Swedish metallurgist: see -ite¹.] A silicate of calcium and magnesium, Ca₂MgSi₂O₇ , belonging to the melilite series of minerals and occurring as transparent or translucent crystals of the tetragonal system. 1890Amer. Jrnl. Sci. CXL. 336 Åkermanite.—A lime-magnesia silicate, containing no alumina, and belonging to the tetragonal system like melilite... It is not known in nature but has been obtained by Vogt.1920Ibid. CC. 131 The compound 2CaO.MgO.2SiO₂ was discovered by Ferguson and Merwin... The mineral åkermanite was thought by them to consist essentially of this compound.1975Sci. Amer. Feb. 33/1 Melilite is a mineral whose composition can vary continuously between Ca₂Al₂SiO₇ , known as gehlenite, and Ca₂MgSi₂O₇ , known as akermanite.1990Jrnl. Petrol. XXXI. 557 Many of these minerals, including wollastonite, monticellite, and akermanite, are characteristic of low pressure.
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