单词 | okenite |
释义 | okeniten. Mineralogy. A triclinic hydrous silicate of calcium occurring as minute needle- or blade-shaped crystals of a whitish colour in vesicles in eruptive rocks. Cf. dysclasite n. Also: the mineral wollastonite, misidentified as a form of okenite (see quot. 1993) (rare, now historical). ΘΚΠ the world > the earth > minerals > types of mineral > silicates > tectosilicate > [noun] > feldspathoid > zeolite > other zeolites analcime1803 mesotype1803 laumontite1805 heulandite1822 okenite1828 dysclasite1835 brewsterite1843 mordenite1864 syhedrite1865 analcite1868 offretite1891 stellerite1909 yugawaralite1952 wairakite1955 nekoite1956 1828 Edinb. New Philos. Jrnl. 6 186 Okenite, a new species of zeolite. 1850 J. D. Dana Syst. Mineral. (ed. 3) 248 Okenite occurs in amygdaloid in Greenland. 1882 Amer. Naturalist 16 80 He regards Louisite as a variety of Okenite, and Steelite as a variety of Mordenite. 1939 Mineral. Abstr. 7 283 X-ray study showed the following minerals to be definite compounds: okenite, CaO.2SiO2.2H2O. 1983 Amer. Mineralogist 68 616/2 In okenite the octahedral ribbon is sandwiched between the terahedral sheet. 1993 A. M. Clark Hey's Mineral Index (ed. 3) 505 Okenite (of Rink), syn. of wollastonite... Rink described two forms of okenite; one is okenite (of von Kobell), the other was shown to be impure wollastonite by J. G. Forchhammer (1864). This entry has been updated (OED Third Edition, March 2004; most recently modified version published online March 2022). < n.1828 |
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