High-pressure crystal structure investigation of synthetic Fe2SiO4 spinel

F. Nestola; Tonci Balic Zunic; M. Koch-Müller; L. Secco; F. Princivalle; F. Parisi; A. Dal Negro

doi:10.1180/minmag.2011.075.5.2649

High-pressure crystal structure investigation of synthetic Fe₂SiO₄ spinel

F. Nestola, Tonci Balic Zunic, M. Koch-Müller, L. Secco, F. Princivalle, F. Parisi, A. Dal Negro

7 Citations (Scopus)

Abstract

The crystal structure of Fe2SiO4 spinel at room temperature was investigated at seven different pressures by X-ray diffraction, using a diamond anvil cell to examine the influence of Fe substitution on ringwoodite behaviour at high pressure. The results compared with those of a pure Mg endmember show that the substitution of Fe into the spinel structure causes only small changes in the compression rate of coordination polyhedra and the distortion of the octahedron. The data show that the compression rate for the octahedron and tetrahedron in (Mg,Fe)2SiO4 can be considered statistically equal for FeO6 and MgO6, as well as for SiO4 in both the endmembers. This shows why almost identical bulk moduli
are reported along the solid solution in recent literature.

Original language	English
Journal	Mineralogical Magazine
Volume	75
Issue number	5
Pages (from-to)	2649–2655
Number of pages	7
ISSN	0026-461X
DOIs	https://doi.org/10.1180/minmag.2011.075.5.2649
Publication status	Published - 1 Oct 2011

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title = "High-pressure crystal structure investigation of synthetic Fe2SiO4 spinel",

abstract = "The crystal structure of Fe2SiO4 spinel at room temperature was investigated at seven different pressures by X-ray diffraction, using a diamond anvil cell to examine the influence of Fe substitution on ringwoodite behaviour at high pressure. The results compared with those of a pure Mg endmember show that the substitution of Fe into the spinel structure causes only small changes in the compression rate of coordination polyhedra and the distortion of the octahedron. The data show that the compression rate for the octahedron and tetrahedron in (Mg,Fe)2SiO4 can be considered statistically equal for FeO6 and MgO6, as well as for SiO4 in both the endmembers. This shows why almost identical bulk moduli are reported along the solid solution in recent literature.",

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T1 - High-pressure crystal structure investigation of synthetic Fe2SiO4 spinel

AU - Nestola, F.

AU - Balic Zunic, Tonci

AU - Koch-Müller, M.

AU - Secco, L.

AU - Princivalle, F.

AU - Parisi, F.

AU - Negro, A. Dal

PY - 2011/10/1

Y1 - 2011/10/1

N2 - The crystal structure of Fe2SiO4 spinel at room temperature was investigated at seven different pressures by X-ray diffraction, using a diamond anvil cell to examine the influence of Fe substitution on ringwoodite behaviour at high pressure. The results compared with those of a pure Mg endmember show that the substitution of Fe into the spinel structure causes only small changes in the compression rate of coordination polyhedra and the distortion of the octahedron. The data show that the compression rate for the octahedron and tetrahedron in (Mg,Fe)2SiO4 can be considered statistically equal for FeO6 and MgO6, as well as for SiO4 in both the endmembers. This shows why almost identical bulk moduli are reported along the solid solution in recent literature.

AB - The crystal structure of Fe2SiO4 spinel at room temperature was investigated at seven different pressures by X-ray diffraction, using a diamond anvil cell to examine the influence of Fe substitution on ringwoodite behaviour at high pressure. The results compared with those of a pure Mg endmember show that the substitution of Fe into the spinel structure causes only small changes in the compression rate of coordination polyhedra and the distortion of the octahedron. The data show that the compression rate for the octahedron and tetrahedron in (Mg,Fe)2SiO4 can be considered statistically equal for FeO6 and MgO6, as well as for SiO4 in both the endmembers. This shows why almost identical bulk moduli are reported along the solid solution in recent literature.

U2 - 10.1180/minmag.2011.075.5.2649

DO - 10.1180/minmag.2011.075.5.2649

M3 - Journal article

SN - 0026-461X

VL - 75

SP - 2649

EP - 2655

JO - Mineralogical Magazine

JF - Mineralogical Magazine

IS - 5

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High-pressure crystal structure investigation of synthetic Fe2SiO4 spinel

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High-pressure crystal structure investigation of synthetic Fe₂SiO₄ spinel