英语词汇“johnstrupite”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	johnstrupite
释义	johnstrupite Min.\|ˈjɒnstrjuːpaɪt, ˈdʒɒnstrəpaɪt\| [ad. G. johnstrupit (W. C. Brögger 1890, in Zeitschr. f. Krystallogr. u. Mineral. XVI. 75), f. the name of J. F. Johnstrup (1818–1894), Danish geologist: see -ite¹.] A brownish green hydrous silicate and fluoride of several metals. 1890Jrnl. Chem. Soc. LVIII. 1077 In addition to the minerals previously known, the author [sc. Brögger] has found..johnstrupite.1906J. P. Iddings Rock Minerals ii. 458 Mosandrite and johnstrupite occur in nephelite-syenites and closely related rocks, chiefly in the region of the Langesund fjord, Norway; also in the aphanitic and lava equivalents in other localities.1959Mineral. Abstr. XIV. 105/1 Calculations of the unit cell contents..give the following formulae:..johnstrupite (Ca, Na, Ce)₁₂ (Ti, Mg, Al, Zr)₃Si₇O₃₁H₂F_4-5... The authors conclude that mosandrite and johnstrupite are varieties of the same species.1965Ibid. XVII. 287/1 Selective concentration of B..has been observed in specimens of..mosandrite and johnstrupite.
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