Meaning & use
Aragonite
Last updated
A mineral form of calcium carbonate that crystallizes in an orthorhombic structure and is a common component of mollusk shells and coral skeletons.
See it in a sentence
The pearl's iridescent layers are made of aragonite deposited by the oyster.
Ocean acidification threatens organisms that build their shells from aragonite.
A note on using this word
Named after the Aragon region of Spain, where it was first described; it is chemically identical to calcite but has a different crystal structure.
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