单词 | magnetoplumbite |
释义 | magnetoplumbiten. Mineralogy. A strongly magnetic greyish black oxide of manganese, lead, and ferric iron occurring as acute dipyramidal crystals of the trigonal system. 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 1926 Chem. Abstr. 20 1194 (heading) A new oxide mineral from Långban, magnetoplumbite. 1944 C. Palache et al. Dana's Syst. Mineral. (ed. 7) I. 728 Adelsköld,..(1938), gives C6/mmc as the space group of an artificial material supposedly the same as magnetoplumbite...The supposed composition PbFe12O19, by analogy with so-called β-alumina, proposed by Adelsköld (1938) is not indicated by analysis. 1968 I. Kostov Mineral. ii. iv. 259 Magnetoplumbite has a perfect {0001} cleavage. 1994 European Jrnl. Mineral. 6 713/2 In the Jakobsberg sample, magnetoplumbite occurs as subhedral grains up to 0.5 mm enclosed by melanotekite poikiloblasts. This entry has been updated (OED Third Edition, March 2000; most recently modified version published online March 2022). < n.1926 |
随便看 |
|
英语词典包含1132095条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。