First Refinement of the Sinoite Structure of a Natural Crystal from the Neuschwanstein (EL6) Meteorite

Addi Bischoff; Thorsten Grund; Thomas Jording; Birgit Heying; Rolf-Dieter Hoffmann; Ute C. Rodewald; Rainer Pöttgen

doi:10.1515/znb-2005-1203

Open Access Published by De Gruyter June 2, 2014

First Refinement of the Sinoite Structure of a Natural Crystal from the Neuschwanstein (EL6) Meteorite

Addi Bischoff , Thorsten Grund , Thomas Jording , Birgit Heying , Rolf-Dieter Hoffmann , Ute C. Rodewald and Rainer Pöttgen

From the journal Zeitschrift für Naturforschung B

https://doi.org/10.1515/znb-2005-1203

A well-shaped sinoite crystal was milled out of a polished thin section of the Neuschwanstein (EL6) chondrite. The structure was refined on the basis of X-ray single crystal data:Cmc2₁, a=885.66(18), b = 549.61(11), c = 484.23(10) pm, R1 = 0.0282, 491 F² values, 26 variable parameters. The structure consists of a complex three-dimensional network of corner-sharing SiN₃O tetrahedra (Si-O 161.9, Si-N 171.9-172.8 pm). The crystal chemical peculiarities of Si₂N₂O are briefly discussed.

Keywords: Sinoite; Enstatite Chondrites; X-Ray Diffraction

Received: 2005-8-25

Published Online: 2014-6-2

Published in Print: 2005-12-1

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

First Refinement of the Sinoite Structure of a Natural Crystal from the Neuschwanstein (EL6) Meteorite

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