muscovite, n.2 Min.
(ˈmʌskəvaɪt)
[f. the name Muscovy (glass): see Muscovy and -ite.]
Common mica. Hence ˌmuscovitiˈzation, conversion into muscovite; ˈmuscovitized ppl. a.
| 1850 J. D. Dana Syst. Min. (ed. 3) v. v. 356 Muscovite, D[ana]. 1862 ― Man. Geol. §56. 56 Muscovite, or common mica, is a potash-mica. 1883 Encycl. Brit. XVI. 413/1 Muscovite (Muscovy-Glass)... Crystals over a yard in diameter in China, where it is used for windows. 1909 Cent. Dict. Suppl., Muscovitization. 1930 Trans. Geol. Soc. S. Africa XXXII. 145 Since, however, albitization on an extensive scale generally accompanies the muscovitization, both processes in part merely involve a mutual exchange of alkali-radicles. 1944 Q. Jrnl. Geol. Soc. XCIX. 118 In slices they show..scattered plates of partly chloritized or muscovitized biotite. 1956 E. W. Heinrich Microsc. Petrogr. ii. 28 Deuteric changes are..muscovitization of biotite [etc.]. 1965 G. J. Williams Econ. Geol. N.Z. xiii. 200/1 The granite in the general area of the Tin Range is more or less muscovitized. |