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Structure and composition of the nacre–prisms transition in the shell of Pinctada margaritifera (Mollusca, Bivalvia)

Yannicke Dauphin 1 Alexander Ball 2 Jean-Pierre Cuif 1 Marine Cotte 3 Murielle Salomé 4 Jean Susini 4 C. Williams 5 Meibom Anders 6
1 IDES - Interactions et dynamique des environnements de surface
2 NHM - Departement of mineralogy
3 C2RMF - Centre de recherche et de restauration des musées de France
4 ESRF - European Synchrotron Radiation Facility
5 NHM - Department of mineralogy
6 LEME / UNA - Laboratoire d'Etude de la Matière Extraterrestre / UMS Nano-analyses
Abstract : A microstructural, mineralogical, and chemical study of the nacre–prisms boundary in the shells of Pinctada margaritifera shows that this boundary is not an abrupt transition, but that there exists a distinct fibrous layer with clear topographic structures and evidence of growth lines. A three-step biomineralization process is proposed that involves changes in the chemical and biochemical composition of the last growth increments of the calcite prisms, formation of the fibrous layer, and development of regular tablets in the nacreous layer.
Keywords : Biomineralization Pinctada margaritifera X-ray absorption near-edge structure Fourier transform IR Laser confocal microscopy Atomic force microscope
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https://hal-insu.archives-ouvertes.fr/insu-00378692
Contributor : Yannicke Dauphin <>
Submitted on : Saturday, April 25, 2009 - 3:02:26 PM
Last modification on : Wednesday, December 9, 2020 - 12:44:01 PM

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Yannicke Dauphin, Alexander Ball, Jean-Pierre Cuif, Marine Cotte, Murielle Salomé, et al.. Structure and composition of the nacre–prisms transition in the shell of Pinctada margaritifera (Mollusca, Bivalvia). Analytical and Bioanalytical Chemistry, Springer Verlag, 2008, 390, pp.1659-1669. ⟨10.1007/s00216-008-1860-z⟩. ⟨insu-00378692⟩

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