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Aragonite
Aragonite is a polymorph of calcite, and shares its chemical composition CaCO3. Its structure, however, differs from calcite and leads to a different crystal shape. The type location[?] for aragonite is Aragon, Spain.
It exists naturally in chitons' shells. See also: list of minerals. External link: Aragonite information (http://mineral.galleries.com/minerals/carbonat/aragonit/aragonit.htm)
wikipedia.org dumped 2003-03-17 with terodump |
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