单词 | orientite |
释义 | orientiten. Mineralogy. A mineral of the orthorhombic system consisting of a hydrated silicate of calcium and manganese and usually occurring as light brown or pink crystals. ΘΚΠ the world > the earth > minerals > types of mineral > silicates > nesosilicates > [noun] > others ottrelite1843 orientite1921 kasolite1922 larnite1929 stillwellite1955 vuagnatite1976 1921 D. F. Hewett & E. V. Shannon in Amer. Jrnl. Sci. 201 491 As the mineral is known to occur in two localities in Oriente Province, where many manganese deposits are found, and it may be widespread in the region, it is appropriate that the geographic relation be perpetuated in the name orientite. 1961 Amer. Mineralogist 46 227 The largest known crystals of orientite do not exceed 1 mm. in length. 1998 Proc. Quadrennial IAGOD Symp. 9 603 Orientite has lower Al2O3 content than macfallite, and both minerals from the Wakasa mine are rich in Fe, as compared with chemical analyses of those phases reported in previous investigations. This entry has been updated (OED Third Edition, September 2004; most recently modified version published online March 2022). < |
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