单词 | nivenite |
释义 | niveniten. Mineralogy. = cleveite n.Disused in technical contexts. ΘΚΠ the world > the earth > minerals > types of mineral > oxides and hydroxides > [noun] > rutile and uranite groups A02 > uraninite pitchblende1770 uraninite1868 nivenite1889 pitch ore1896 1889 W. E. Hidden & J. B. Mackintosh in Amer. Jrnl. Sci. 38 481 Nivenite, a hydrate thorium-yttrium-lead uranate. 1889 W. E. Hidden & J. B. Mackintosh in Amer. Jrnl. Sci. 38 482 We have named this mineral nivenite, in recognition of the energy which Mr. Niven has displayed in this locality. 1918 Proc. National Acad. Sci. U.S.A. 4 185 (table) Mineral..Nivenite... Calculated age in years..1,671,000,000. 1981 J. May Many-colored Land iii. v. 334 Unless I miss my guess..that rock is nivenite, an ore containing uranium and radium. This entry has been updated (OED Third Edition, December 2003; most recently modified version published online March 2022). < |
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