英语词汇“zirkelite”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

zirkelite

释义

zirkelite Min.|ˈzɜːkəlaɪt|
[f. the name of Ferdinand Zirkel (1838–1912), German mineralogist + -ite¹.]
A black monoclinic (pseudocubic) oxide of zirconium, calcium, thorium, titanium, rare earths, and other elements, (Ca,Th,Ce)Zr(Ti,Nb)₂O₇.
1895Hussak & Prior in Mineral. Mag. XI. 86 Zirkelite. A new calcium zirconate and titanate.1962Mineral. Abstr. XV. 538/1 Zirkelite is widely distributed in the Palaeozoic ultrabasic and alkaline complexes of the Kola Peninsula where it occurs as an accessory mineral in calcite-amphibole rocks; [etc.].1972Nature 31 Mar. 215/1 We find that terrestrial zirkelite bears the closest comparison with the tranquillityite group, and yet contains sufficient CaO..to provide a possible link with any calcic lunar zirconian phases yet to be established.1975[see zirconolite].1977Amer. Mineralogist LXII. 408 Zirconolite and niobozirconolite..are synonymous with zirkelite.1981K. Frye Encycl. Mineral. 220/1 There is considerable controversy over the exact formulas of zirkelite and zirconolite. Some evidence suggests that there is no difference.

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