单词	aragonite
释义	aragonite noun ara·​go·​nite ə-ˈra-gə-ˌnīt  ˈa-rə-gə-  ˈer-ə- : a mineral similar to calcite in consisting of calcium carbonate but differing from calcite in its orthorhombic crystallization, greater density, and less distinct cleavage aragonitic ə-ˌra-gə-ˈni-tik  ˌer-ə-gə- ˌa-rə- adjective Example Sentences Recent Examples on the Web Layers of the aragonite and conchiolin are called nacre, and after each layer forms, mollusks will adjust each sheet to maintain its symmetry. Elizabeth Gamillo, Smithsonian Magazine, 12 Nov. 2021 Calcium carbonate, for example, which consists of one part calcium, one part carbon, and three parts oxygen, can assemble into several different minerals, including calcite and aragonite. Sophia Chen, WIRED, 1 July 2019 Through a process not yet fully understood, little balls of the material then give way to aragonite, the form of calcium carbonate that makes up a mature coral skeleton. Steph Yin, New York Times, 1 June 2017 Some marine plankton and invertebrates build shells from aragonite — a form of calcium carbonate which dissolves more easily than calcite — and these organisms will be the first to feel the effect of increasing ocean acidity. Ars Technica, WIRED, 31 May 2011 Word History Etymology German Aragonit, from Aragon, Spain First Known Use 1801, in the meaning defined above
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