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单词 rock-forming
释义

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rock-forming
rock-forming adj. chiefly Geology that forms rock; esp. (of a mineral) that occurs as a major constituent of igneous rock.
ΚΠ
1854 A. Brown Philos. Physics xiv. 475 No theoretical system of physics that has been yet entertained which can by any possibility be made..to account for this passage of rock-forming matter.
1870 Nature 28 July 268/2 Ehrenberg read a communication on the increasing knowledge of invisible life in the rock-forming Bacillariae.
1916 R. H. Rastall Agric. Geol. i. 4 Many of the most important rock-forming minerals are not pure chemical compounds.
1990 C. Pellant Rocks, Minerals & Fossils 52 The main rock-forming silicates are felspars, quartz, micas, pyroxenes, amphiboles and olivines.
extracted from rockn.1
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