Alignment of crystallographic c-axis throughout the four distinct microstructural layers of the oyster Crassostrea gigas

MacDonald, J., Freer, A. and Cusack, M. (2010) Alignment of crystallographic c-axis throughout the four distinct microstructural layers of the oyster Crassostrea gigas. Crystal Growth and Design, 10(3), pp. 1243-1246. (doi: 10.1021/cg901263p)

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Abstract

The superimposed layers of the true oyster shell have distinct morphology. The shells are mainly calcitic, comprising an outer prismatic region and inner foliated structure that is frequently interrupted by lenses of chalky calcitic deposits. Aragonite is restricted to the myostracum and ligament. Electron backscatter diffraction (EBSD) analysis has shown that despite the variations in structural morphology, the mineralized layers of the oyster shell maintain a single crystallographic orientation with the crystallographic c-axis orientated perpendicular to outer and inner shell surfaces. Varying crystal morphology, while maintaining crystallographic unity, may be an evolutionary trait that forms a crack-resistant shell with optimum strength and flexibility.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Cusack, Professor Maggie and Freer, Dr Andrew
Authors: MacDonald, J., Freer, A., and Cusack, M.
Subjects:Q Science > QD Chemistry
College/School:College of Science and Engineering > School of Chemistry
College of Science and Engineering > School of Geographical and Earth Sciences
Journal Name:Crystal Growth and Design
Journal Abbr.:Cryst. growth des.
ISSN:1528-7483
ISSN (Online):1528-7505
Published Online:19 November 2009

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