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单词 thortveitite
释义 thortveitite Min.|ˈθɔːtvaɪtaɪt, -veɪtaɪt, ˈtɔːt-|
[ad. G. thortveitit (J. Schetelig 1911, in Centralbl. f. Min. 721), f. the name of O. Thortveit of Norway, its discoverer: see -ite1.]
A silicate of scandium, (Sc, Y)2Si2O7, found as colourless or greyish monoclinic crystals.
1912Jrnl. Chem. Soc. CII. ii. 56 (heading) Thortveitite, a new mineral.1963Prof. Papers U.S. Geol. Survey No. 475-b. 11/1 The association of thortveitite with fluorite in the deposit at Crystal Mountain represents a new type of occurrence, which contrasts strongly with the occurrences in granitic pegmatites of Norway and Madagascar.
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