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Minerals 2016, 6(1), 21;

A Solid State NMR Investigation of Recent Marine Siliceous Sponge Spicules

Sorbonne Universités, UPMC Univ Paris 06, CNRS, Collège de France, Laboratoire de Chimie de la Matière Condensée de Paris (LCMCP-UMR 7574), 11 place Marcelin Berthelot, F-75005 Paris, France
Institute of Paleobiology, Polish Academy of Sciences, ul. Twarda 51/55, 00-818 Warszawa, Poland
These authors contributed equally to this work.
Author to whom correspondence should be addressed.
Academic Editor: Caroline Peacock
Received: 18 December 2015 / Revised: 24 February 2016 / Accepted: 26 February 2016 / Published: 10 March 2016
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The composition of four recent siliceous marine sponge spicules was studied and compared. In particular, multinuclear (29Si, 13C, 31P) solid state nuclear magnetic resonance (NMR) allowed the characterization of both the mineral and organic constituents in a non-destructive manner. The silica network condensation was similar for all samples. The organic matter showed a similar pattern but varied in abundance as a function of the sponge group (Hexactinellida or Demospongiae) and sampling conditions (living or dead organisms). This indicates that the striking morphological differences observed at the macroscale for the various samples do not lead to significant fingerprints in the spectroscopic signatures of the mineral and organic constituents. View Full-Text
Keywords: sponges; silica; solid state nuclear magnetic resonance (NMR) sponges; silica; solid state nuclear magnetic resonance (NMR)

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Masse, S.; Pisera, A.; Laurent, G.; Coradin, T. A Solid State NMR Investigation of Recent Marine Siliceous Sponge Spicules. Minerals 2016, 6, 21.

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