单词 | micropegmatite |
释义 | micropegmatiten. Geology. Any rock with a micropegmatitic (micrographic) structure. ΚΠ 1886 Amer. Naturalist 20 641 The most highly crystalline member of the former is a ‘pale pink-grey pegmatite’, passing through a well-defined graphic granite into a micropegmatite form. 1888 J. J. H. Teall Brit. Petrogr. 30 Graphic granite and..its microscopic equivalent, generally termed micro-pegmatite. 1895 A. Harker Petrol. vii. 91 When the intergrowth is on a relatively coarse scale, it is often rude and irregular, but the finer-textured ‘micropegmatite’ shews great regularity and often a definite arrangement. 1965 Philos. Trans. (Royal Soc.) A. 257 301 The rest is micropegmatite, augite, [etc.]. 1992 Indian Minerals 46 249 Locally..intergrowth of K-feldspar and quartz is present and this feature is similar to micropegmatite described by Spry (1969). This entry has been updated (OED Third Edition, December 2001; most recently modified version published online March 2022). < n.1886 |
随便看 |
|
英语词典包含1132095条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。