单词 | nefedyevite |
释义 | nefedyeviten. Mineralogy. A white or pinkish aluminosilicate of magnesium and calcium belonging to the montmorillonite group. ΘΚΠ the world > the earth > minerals > types of mineral > silicates > phyllosilicate > [noun] > smectites > other smectites scoulerite1840 saponite1849 nefedyevite1873 sauconite1875 stevensite1889 rectorite1891 1873 Jrnl. Chem. Soc. 26 1210 Nefediewite; a new mineral... This amorphous mineral, very much like lithomarge, occurs, together with fluorspar, in the limestone of Nertschinsk. 1938 Mineral. Abstr. 7 104 Greenish-grey unctuous clay interbedded among Cretaceous limestones, the bulk of which consists of a fibrous crystalline aggregate..and in composition..corresponds to nefedievite. 1961 Doklady Earth Sci. 135 1296/1 In view of the great structural similarity between true montmorillonite and nefedyevite, doubling of the unit cell along the c axis can be expected. 1993 A. M. Clark Hey's Mineral Index (ed. 3) 488/1 Nefed'evite, aluminosilicate of Mg and Ca... A montmorillonitic clay. This entry has been updated (OED Third Edition, September 2003; most recently modified version published online March 2022). < |
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