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Amorphous calcium carbonate transforms into calcite during sea urchin larval spicule growth
Proceedings of the Royal Society B Biological Sciences · 1997 · Vol. 264(1380) · pp. 461–465
Elia Beniash✉(Weizmann Institute of Science)Joanna Aizenberg(Weizmann Institute of Science)Lia Addadi(Weizmann Institute of Science)Stephen Weiner(Weizmann Institute of Science)
Abstract
Sea urchin larvae form an endoskeleton composed of a pair of spicules. For more than a century it has been stated that each spicule comprises a single crystal of the CaCO(3) mineral, calcite. We show that an additional mineral phase, amorphous calcium carbonate, is present in the sea urchin larval spicule, and that this inherently unstable mineral transforms into calcite with time. This observation significantly changes our concepts of mineral formation in this well-studied organism.
Calcium Carbonate Crystallization and InhibitionCephalopods and Marine BiologyMarine Biology and Environmental ChemistrySponge spiculeCalciteSpiculeAmorphous calcium carbonateMineralCalcium carbonateSea urchinBiomineralizationGeologyMineralogy
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References
Solubility of amorphous calcium carbonate
Journal of Crystal Growth · 1989 · 538 citations
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Amorphous calcium carbonate transforms into calcite during sea urchin larval spicule growth
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