单词 | metavariscite |
释义 | metavarisciten. Mineralogy. A monoclinic form of hydrated aluminium phosphate, AlPO4·2H2O, which is dimorphous with the orthorhombic form (variscite), and occurs as minute, pale green, tabular crystals in cavities in massive variscite. ΘΚΠ the world > the earth > minerals > types of mineral > phosphates > [noun] > hydrous aluminium phosphates hydrargillite1805 wavellite1805 brazilianite1818 lasionite1819 peganite1832 fischerite1846 variscite1850 planerite1868 sphaerite1868 trolleite1868 metavariscite1925 1925 E. S. Larsen & W. T. Schaller in Amer. Mineralogist 10 23 (heading) The identity of variscite and peganite and the dimorphous form, metavariscite. 1940 Amer. Mineralogist 25 719 (heading) Clinobarrandite and the isodimorphous series, variscite-metavariscite. 1975 Nature 9 Oct. 474/1 Table 1 shows these d spacings along with those obtained by X-ray diffraction and those of the minerals sterrettite, variscite and meta-variscite. 1996 Mineral. Mag. 60 671 (title) Variscite and metavariscite from Gunheath china clay pit, St. Austell, Cornwall. This is a new entry (OED Third Edition, December 2001; most recently modified version published online March 2022). < |
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