niobianadj.

Brit.

/nʌɪˈəʊbɪən/, U.S.

/naɪˈoʊbiən/

Origin: Formed within English, by derivation. Etymons: niobium n., -ian suffix.

Etymology: < niob- (in niobium n.) + -ian suffix.

Mineralogy.

Of a mineral: having a (small) proportion of a constituent element replaced by niobium.

ΘΚΠ

the world > the earth > minerals > change processes > [adjective] > having proportion replaced

titanian1813

aluminian1930

ferrian1930

ferroan1930

fluorian1930

lithian1930

magnesian1930

manganoan1930

molybdenian1930

nickelian1930

plumbian1930

sodian1930

strontian1930

tantalian1930

thorian1930

vanadian1930

molybdian1951

niobian1956

1956 Amer. Mineralogist 41 785 Other associated minerals are apatite, diopside, biotite, pyrochlore, and niobian perovskite.

1962 W. A. Deer et al. Rock-forming Minerals V. 35 Apart from the ferroan and ferrian varieties of rutile, there is also the niobian variety, or ilmenorutile, with up to 60 per cent. of Fe(Nb,Ta)₂O₆ with Nb > Ta.

1972 Nature 31 Mar. 215/1 Terrestrial dysanalyte is a niobian perovskite which contains about 26% CaO and no detectable ZrO₂.

1990 W. L. Roberts et al. Encycl. Minerals (ed. 2) 610/2 [Niocalite] occurs with..niobian perovskite..at Oka, Quebec, Canada.

This entry has been updated (OED Third Edition, September 2003; most recently modified version published online March 2022).

单词	niobian
释义	niobianadj. Brit. /nʌɪˈəʊbɪən/, U.S. /naɪˈoʊbiən/ Origin: Formed within English, by derivation. Etymons: niobium n., -ian suffix. Etymology: < niob- (in niobium n.) + -ian suffix. Mineralogy. Of a mineral: having a (small) proportion of a constituent element replaced by niobium. ΘΚΠ the world > the earth > minerals > change processes > [adjective] > having proportion replaced titanian1813 aluminian1930 ferrian1930 ferroan1930 fluorian1930 lithian1930 magnesian1930 manganoan1930 molybdenian1930 nickelian1930 plumbian1930 sodian1930 strontian1930 tantalian1930 thorian1930 vanadian1930 molybdian1951 niobian1956 1956 Amer. Mineralogist 41 785 Other associated minerals are apatite, diopside, biotite, pyrochlore, and niobian perovskite. 1962 W. A. Deer et al. Rock-forming Minerals V. 35 Apart from the ferroan and ferrian varieties of rutile, there is also the niobian variety, or ilmenorutile, with up to 60 per cent. of Fe(Nb,Ta)₂O₆ with Nb > Ta. 1972 Nature 31 Mar. 215/1 Terrestrial dysanalyte is a niobian perovskite which contains about 26% CaO and no detectable ZrO₂. 1990 W. L. Roberts et al. Encycl. Minerals (ed. 2) 610/2 [Niocalite] occurs with..niobian perovskite..at Oka, Quebec, Canada. This entry has been updated (OED Third Edition, September 2003; most recently modified version published online March 2022). < adj.1956
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