| 释义 |
oncosine Min.|ˈɒŋkəsiːn|
Also onko-, -in.
[ad. G. onkosin (F. von Kobell 1834, in Jrnl. f. prakt. Chem. II. 296), f. Gr. ὄγκωσ-ις swelling (from its behaviour when heated in a blow-pipe flame): see -ine5.]
An aluminosilicate of potassium, other alkali metals, and magnesium, which is a variety of, or perhaps a mixture containing, muscovite.
1854J. D. Dana Syst. Min. (ed. 4) II. 504 Onkosin... In roundish pieces, having an apple-green color; sometimes grayish or brownish. 1868Ibid. (ed. 5) 480 Oncosin..occurs in roundish masses imbedded in dolomite with mica, at Passecken near Tamsweg, in Salzburg. 1923Mineral. Abstr. II. 112 Muscovite, the variety onkosine is plentiful in the salbands of the lodes. 1939Geol. Förening. Stockholm Förhand. LX. 622 The vein material in the pollucite, where late muscovite occurs in the somewhat unusual form of deep mauve-coloured, compact, cryptocrystalline masses, mineralogically referred to the subspecies oncosine. 1962Mineral. Abstr. XV. 393/2 Pegmatites with giant crystals of amblygonite, spodumene, and oncosine and aggregates of montebrasite. |