High-pressure crystal structure investigation of synthetic Fe2SiO4 spinel
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High-pressure crystal structure investigation of synthetic Fe2SiO4 spinel. / Nestola, F.; Balic Zunic, Tonci; Koch-Müller, M.; Secco, L.; Princivalle, F.; Parisi, F.; Negro, A. Dal.
In: Mineralogical Magazine, Vol. 75, No. 5, 2011, p. 2649–2655.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
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
Y1 - 2011
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
VL - 75
SP - 2649
EP - 2655
JO - Mineralogical Magazine
JF - Mineralogical Magazine
SN - 0026-461X
IS - 5
ER -
ID: 49593038