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

单词

murmanite

释义

murmanite Min.|ˈmɜːmənaɪt|
[ad. Russ. murmanit (A. E. Fersman 1923, in Dokladȳ Ross. Akad. Nauk 63), f. Murman, name of a shore on the north of the Kola peninsula in Russia + -it -ite¹.]
A hydrated silicate of sodium and titanium with lesser and variable amounts of manganese, zirconium, iron, calcium, and niobium, which is found as violet monoclinic crystals.
1924Mineral. Abstr. II. 263 Various new primary occurrences were found for..a new mineral murmanite from Alluaiva, Angvunsiok, and Sengischorr.1951Ibid. XI. 240 Recalculation of analyses of murmanite..suggests a formula (Na₂,Ca)TiSiO₅·xH₂O analogous to that of sphene.1968I. Kostov Mineralogy ii. v. 298 Murmanite and lomonosovite form a complete isomorphous series and are monoclinic like sphene and fersmanite.

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