ara·go·nite /əˈrægəˌnaɪt, ˈærəgə-/
文石; 文石; 霰石; 霰石
A·rag·o·nite n. Min. A mineral composed of calcium carbonate and identical in composition with calcite, but differing from it in its crystalline form and some of its physical characters.
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aragonite
n : a mineral form of crystalline calcium carbonate; dimorphic
with calcite