单词 | paragonite |
释义 | paragoniten. Mineralogy. A mineral of the mica group which differs from muscovite in containing sodium rather than potassium. ΘΚΠ the world > the earth > minerals > types of mineral > silicates > phyllosilicate > [noun] > mica > paragonite paragonite1849 1849 J. Nicol Man. Mineral. 163 The mica slate..named paragonite. 1868 J. D. Dana Syst. Mineral. (ed. 5) 488 Paragonite constitutes the mass of the rock at Monte Campione. 1915 Proc. National Acad. Sci. U.S.A. 1 576 It is also noteworthy that there are no true soda micas, except paragonite, which is only known in metamorphic rocks. 1989 Jrnl. Petrol. 30 112 Paragonite compositions closely approximate the ideal formula with generally less than 15% muscovite substitution. Compounds paragonite-schist n. a mica-schist containing paragonite rather than the more common muscovite. ΚΠ 1885 Cassell's Encycl. Dict. V. i Paragonite-schist. 1912 A. H. Phillips Mineralogy x. 462 Most beautiful specimens [of cyanite] occur at Pizzo Forno, St. Gothard, Switzerland, in a paragonite schist. Derivatives paragoˈnitic adj. ΘΚΠ the world > the earth > minerals > mineral sources > [adjective] > yielding a mineral or metal > others amethystine1670 marcasitical1670 cawky1676 blendy1683 sylvanitic1796 ytter1805 phosphatic1818 pyroxenic1819 hornblendic1823 muriatiferous1823 platiniferous1828 quartziferous1831 hypersthenic1838 schorly1838 uralitic1845 blendous1847 rutilated1849 orthoclase1853 palladiferous1866 peridotic1867 paragonitic1868 vivianitized1870 andesitic1876 tremolitic1880 phosphoriferous1881 kaolinitic1885 saussuritic1885 perthitic1887 strontianiferous1888 radiferous1899 myrmekitic1916 montmorillonitic1939 illitic1949 1868 J. D. Dana Syst. Mineral. (ed. 5) 488 The rock..containing cyanite and staurotide, called paragonitic or talcose schist. 1999 Canad. Mineralogist 37 1229 Muscovite in granitic rocks turns out to have moderate celadonitic and paragonitic contents. This entry has been updated (OED Third Edition, June 2005; most recently modified version published online March 2022). < n.1849 |
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