单词 | baddeleyite |
释义 | baddeleyiten. Mineralogy. A mineral consisting of zirconium oxide (zirconia), occurring naturally as a minor constituent of some mafic igneous rocks and sometimes used as a refractory material.Natural baddeleyite is impure zirconium oxide, ZrO2 (usually with some iron, titanium, and hafnium oxides). Crystal system: monoclinic. ΘΚΠ the world > the earth > minerals > types of mineral > oxides and hydroxides > [noun] > other oxides > oxides of two plus elements lithiophorite1871 baddeleyite1892 brazilite1893 strüverite1907 katoptrite1917 magnetoplumbite1926 nigerite1946 1892 L. Fletcher in Nature 27 Oct. 621/1 For this new species I beg to suggest the name Baddeleyite, in recognition of the services of Mr. Baddeley to mineralogical science. 1893 Amer. Naturalist 27 566 Baddeleyite..is a black substance with a density of 6.02 and a hardness of 6.5. 1955 J. C. Brown & A. K. Dey India's Mineral Wealth (ed. 3) v. 253 Baddeleyite (or brazilite) the natural oxide of zirconium (ZrO2). 2001 Science 24 Aug. 1469/2 Because this polymorph is isostructural with baddeleyite, it can accommodate appreciable amounts of ZrO2 and HfO2 in solid solution. This entry has been updated (OED Third Edition, December 2008; most recently modified version published online December 2021). < |
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