单词 | ottrelite |
释义 | ottreliten. Mineralogy. ΚΠ 1837 J. D. Dana Syst. Mineral. vi. 264 Schiller Spar... Otrelite... Spath-Chatoyant, Diallage Metalloide. 1896 A. H. Chester Dict. Names Minerals 196 Ottrelite, an obs. syn. of diallage. 2. A hydroxide and aluminosilicate of magnesium, ferrous iron, and manganese which occurs as greyish to black crystalline scales.Sometimes considered to be a variety of chloritoid, ottrelite has been found to consist of monoclinic and triclinic polymorphs. ΘΚΠ the world > the earth > minerals > types of mineral > silicates > nesosilicates > [noun] > others ottrelite1843 orientite1921 kasolite1922 larnite1929 stillwellite1955 vuagnatite1976 1843 Geologist 2 197 The small discs of Ottrelite are disseminated profusely through all the transition strata of the above mentioned locality. 1859 F. L. M'Clintock Voy. ‘Fox’ 378 Boulders of black and red micaceous gneiss,..in which the crystals of mica (qu. Ottrelite) are just commencing to be developed. 1896 Amer. Naturalist 30 476 Ottrelite is often found enclosed in the talc and sometimes embedded in the saussurite. 1951 Science 5 Jan. 7/2 Minute metacrysts of ottrelite, biotite, and a white micaceous mineral are visible. 1978 Bull. Mineral. 101 548 A new chemical analysis of ottrelite from Ottré especially gives 12.79% MnO, 8.14% FeO and 4.46% Mg. This entry has been updated (OED Third Edition, September 2004; most recently modified version published online March 2022). < n.1837 |
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