Brown, E, Rixen, Tim ORCID: https://orcid.org/0000-0001-8376-891X and Kröger, R (2010) Acicular building blocks in the corallites ofPorites lutea. Journal of Physics: Conference Series, 241 . 012026. DOI https://doi.org/10.1088/1742-6596/241/1/012026.

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Abstract

A detailed study of the crystal building blocks of Porites Lutea corallites was performed using transmission electron microscope (TEM) and applying a preparation method that preserved the original microstructure of the skeleton. Bundled acicular aragonite crystals could be identified and were found to be of high structural quality. These tens of μm long needle shaped crystals were in general electron transparent – indicating a thickness well below 500 nm – and covered by an amorphous, possibly organic matrix. The growth of the orthorhombic crystal needles was found to proceed preferentially along <100> directions with the <010> and <001> growth directions being inhibited. The width distribution of these needles shows a multimodal behaviour, which could indicate a multi-stage nucleation process throughout the skeleton formation.

Document Type:	Article
Programme Area:	PA Not Applicable
Research affiliation:	Biogeochemistry and Geology > Carbon and Nutrient Cycling
Refereed:	Yes
Open Access Journal?:	Yes
DOI:	https://doi.org/10.1088/1742-6596/241/1/012026
ISSN:	1742-6596
Date Deposited:	12 Nov 2025 17:14
Last Modified:	12 Nov 2025 17:14
URI:	https://cris.leibniz-zmt.de/id/eprint/5995

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