单词 | dacite |
释义 | dacite Geol.|ˈdeɪsaɪt| [Named 1863 from Dacia, the Roman province including Transylvania + -ite.] A name for varieties of greenstone or trachyte rock containing quartz.
[1878Lawrence Cotta's Rocks Class. 185 Stache has given the name of Dacit to a quartzose trachyte.] 1879Rutley Stud. Rocks xii. 235 The chemical composition of the dacites varies considerably. |

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