单词 | retzian |
释义 | retziann. Mineralogy. A rare manganese-containing mineral which occurs as dark brown prismatic or tabular crystals.Retzian is an arsenate and hydroxide of manganese and cerium (sometimes with other rare earth elements), Mn2(Ce, La, Nd)AsO4(OH)4. Crystal system: orthorhombic.In more recent use often with following chemical symbol, indicating the predominant rare earth element present, as retzian-(Ce) (cerium), retzian-(La) (lanthanum), and retzian-(Nd) (neodymium). ΘΚΠ the world > the earth > minerals > types of mineral > arsenates > [noun] > others of two plus elements kœttigite1850 synadelphite1892 retzian1895 fluor-adelite1897 tilasite1897 schallerite1925 smolyaninovite1957 talmessite1961 1895 H. Sjögren in Bull. Geol. Inst. Univ. Upsala 2 54 (heading) Retzian, a new arseniate from the Mossgrufva, Nordmark. 1921 Bull. U.S. Geol. Surv. No. 679. 126 Retzian..strongly pleochroic. 1967 Amer. Mineralogist 52 1610 The crystal structure of retzian is an interesting sheet structure. 1982 P. J. Dunn & B. D. Sturman in Amer. Mineralogist 67 841 Retzian-(Nd) is a new mineral from the Sterling Hill Mine in Ogdensburg, New Jersey. 1984 P. J. Dunn et al. in Mineral. Mag. 48 533/1 Retzian-(La)..is a new rare-earth analogue of retzian and retzian-(Nd). 1993 A. M. Clark Hey's Mineral Index (ed. 3) 592/1 Retzian-(La)..Named as the La analogue of retzian-(Ce) according to Levinson's rule. This entry has been updated (OED Third Edition, March 2010; most recently modified version published online March 2022). < n.1895 |
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