| 释义 |
zirconian, a.|zəˈkəʊnɪən|
[f. prec. + -an.]
= zirconic; spec. in Min., applied to a mineral in which zirconium replaces a (small) proportion of some constituent element (cf. -ian 2).
zirconian syenite = zircon-syenite (zircon b).
1853Ross tr. Humboldt's Trav. III. 378 note, Pyroxenic porphyries with amygdaloids and zirconian syenites. 1930W. T. Schaller in Amer. Mineralogist XV. 572. 1963 Doklady Acad. Sci. USSR: Earth Sci. Sect. CXLI. 1301/1 Apatite, nepheline, and perovskite were observed, frequently forming intergrowths with the zirconian schorlomite. 1972Nature 31 Mar. 197/2 The appearance of zirconian SiO2-free minerals in the granitic fraction is rather strange. |