| 释义 |
niobian, a. Min.|naɪˈəʊbɪən|
[f. niobium + -ian 2.]
Of a mineral: having a (small) proportion of a constituent element replaced by niobium.
1962[see ilmenorutile]. 1972Nature 31 Mar. 215/1 Terrestrial dysanalyte is a niobian perovskite which contains about 26% CaO and no detectable ZrO2. |