单词 | nenadkevite |
释义 | nenadkeviten. Mineralogy. A substance originally identified as a mineral consisting of a hydrated basic silicate of uranium and other elements, but now recognized as a mixture of minerals. ΘΚΠ the world > the earth > minerals > types of mineral > silicates > miscellaneous silicates > [noun] > other complex silicates sordavalite1823 babingtonite1824 glottalite1836 keilhauite1846 schorlomite1846 tscheffkinite1850 yttrotitanite1854 partschinite1868 leidyite1878 cenosite1888 kainosite1888 johnstrupite1890 taramellite1908 joaquinite1909 nenadkevite1955 weeksite1960 1955 1st Internat. Conf. Peaceful Uses Atomic Energy: U.S.S.R. Sci. & Techn. Exhibit. (Eng. ed.) 7 Of interest in the second group of silicates containing tetra- and hexavalent uranium is the new mineral species nenadkevite... This mineral is deposited from hydrothermal solutions in the form of veins. 1960 Mineral. Abstr. 14 401/1 Rarer uranium deposits include those in which the ore mineral is the silicate nenadkevite. 1977 Amer. Mineralogist 62 1261/2 Re-examination of ‘ore and museum samples of nenadkevite from several Precambrian ore showings’..show them to be mixtures of uraninite (relict), boltwoodite, and ‘uranium hydroxides’. This entry has been updated (OED Third Edition, September 2003; most recently modified version published online March 2022). < n.1955 |
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