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Mosaic structure in the spines of Holopneustes porossisimus

Kelm, Klemens and Goetz, Andreas and Sehrbrock, Angalika and Irsen, Stephan and Hoffmann, Ramona and Griesshaber, Erika and Schmahl, Wolfgang. W. (2012) Mosaic structure in the spines of Holopneustes porossisimus. Zeitschrift für Kristallographie, 227, pp. 758-765. Oldenbourg Verlag. DOI: 10.1524/zkri.2012.1541 ISSN 2194-4946

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Official URL: http://www.oldenbourg-link.com/doi/abs/10.1524/zkri.2012.1541


Sea urchin spines of Holopneustes porossisimus are porous single crystals, with the pores being filled with a material rich in carbon, silicon, fluorine and sodium. The magnesian calcite constituting the spine is highly strained. Even though the spines appear to be single crystalline on a macroscopic scale, the calcitic material exhibits an extended defect network. We find dislocations as well as rotational and other, not yet identified boundaries. We also observe within spine calcite a patterned distribution of sulphur. Both distributions, that of the defect network and that of sulphur resemble in their pattern to each other and have a similar mesh size of 50 nm. We conclude from these observations that they arise from the growth process of the spine and account for the mosaicity within the spine single crystals.

Item URL in elib:https://elib.dlr.de/78955/
Document Type:Article
Title:Mosaic structure in the spines of Holopneustes porossisimus
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Kelm, Klemens klemens.kelm (at) dlr.deUNSPECIFIED
Goetz, AndreasGeoBioCenter LMU and Dept. of Ear th and Environmental Sciences, LMU Munich, GermanyUNSPECIFIED
Sehrbrock, AngalikaForschungszentrum Stiftung caesar, BonnUNSPECIFIED
Irsen, StephanForschungszentrum Stiftung caesar, BonnUNSPECIFIED
Hoffmann, RamonaDep. Chemie, NIM&CeNS, Universität MünchenUNSPECIFIED
Griesshaber, ErikaGeoBioCenter LMU and Dept. of Ear th and Environmental Sciences, LMU Munich, GermanyUNSPECIFIED
Schmahl, Wolfgang. W.GeoBioCenter LMU and Dept. of Ear th and Environmental Sciences, LMU Munich, GermanyUNSPECIFIED
Date:November 2012
Journal or Publication Title:Zeitschrift für Kristallographie
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In ISI Web of Science:Yes
DOI :10.1524/zkri.2012.1541
Page Range:pp. 758-765
Antipov, EvgenyUNSPECIFIED
Bismaier, UlrichUNSPECIFIED
Huppertz, HubertUNSPECIFIED
Petriceck, VaclavUNSPECIFIED
Pöttgen, RainerUNSPECIFIED
Schmahl, WolfgangUNSPECIFIED
Tiekink, EdwardUNSPECIFIED
Publisher:Oldenbourg Verlag
ISSN: 2194-4946
Keywords:Powder structure analysis, X-ray diffraction, Tetrazoles, Microstrains
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research (old)
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Structures & Materials (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Administrativ-Technische Betriebsleitung / Mikroanalytik und Metallographie
Deposited By: Kelm, Dr. Klemens
Deposited On:27 Nov 2012 09:19
Last Modified:27 Nov 2012 09:19

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