单词 | fluocerite |
释义 | fluoceriten. Mineralogy. A mineral consisting of a fluoride of cerium and lanthanum (in varying proportions), typically occurring as brownish-yellow prisms or polycrystalline masses.Chemical formula: (Ce,La)F3. Crystal system: hexagonal. ΘΚΠ the world > the earth > minerals > types of mineral > halides > [noun] > other fluorides cryolite1800 yttrocerite1817 fluocerite1835 prosopite1854 pachnolite1866 thomsenolite1868 tysonite1880 hieratite1882 villiaumite1908 neighborite1961 1835 C. U. Shepard Treat. Mineral.: 2nd Pt. II. 302 (table) Fluocerite. 1863 H. Watts Dict. Chem. I. 834 The sesquifluoride Ce2F3..occurs native as fluocerite, in..six-sided prisms and plates..also massive. 1911 J. P. Iddings Rock Minerals (ed. 2) 576 It is probable that the original fluocerite analyzed by Berzelius is the same as tysonite. 1999 I. Kostov & R. I. Kostov Crystal Habits Minerals vi. 174 Pseudoisometric (I)-type, like iodargyrite (in spite of the perfect cleavage of the latter) is fluocerite (Ce,La)F3. This entry has been updated (OED Third Edition, March 2012; most recently modified version published online March 2022). < |
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