单词 | microgranite |
释义 | microgranite Geol.|maɪkrəʊˈgrænɪt| [f. micro- + granite.] A granite rock, recognizable as crystalline only under the microscope. Hence micrograˈnitic a., of, or pertaining to, microgranite. microˈgranitoid a., like microgranite.
1885Geikie Text-bk. Geol. (ed. 2) 109 Where a similar structure is so fine that it can only be recognised with the microscope, it has been called microgranitic or euritic. 1888Teall Brit. Petrogr. 307 The former he [Rosenbusch] proposed to call micro-granites. 1893[see micro-syenite]. 1903Geikie Text-bk. Geol. ii. ii. v. (ed. 4) 151 Where their elements are minute the structure becomes micro-granitoid or euritic. Ibid. vii. 209 Granite-porphyry (micro-granite) a fine grained granitoid rock. |

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