Ferric iron in upper mantle Cr-spinels: a Mossbauer spectroscopic study

S. Nasir; A. F. Lahlooh; S. Mahmood; I. A. Al-Jarayesh

Ferric iron in upper mantle Cr-spinels: a Mossbauer spectroscopic study

S. Nasir, A. F. Lahlooh, S. Mahmood, I. A. Al-Jarayesh

Earth Science

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

Mossbauer spectra for 14 Cr-bearing spinels, separated from spinel lherzolite xenoliths, were measured to study their Fe²⁺-Fe³⁺ crystallographic ordering. Spectra acquired at 298 and 77 K suggest that both Fe²⁺ and Fe³⁺ are tetrahedrally coordinated in lherzolite Cr-bearing spinels with low Fe³⁺/Fe^tot ratios. The investigated Cr-spinels show similar hyperfine parameters, quadrupole splittings and isomer shifts to Mossbauer studies of upper mantle Cr-spinels from lherzolite xenoliths as reported elsewhere, suggesting the similarity in Fe²⁺ and Fe³⁺ ordering. -from Authors

Original language	English
Pages (from-to)	369-375
Number of pages	7
Journal	Chemie der Erde - Geochemistry
Volume	53
Issue number	4
Publication status	Published - 1993

ASJC Scopus subject areas

Geophysics
Geochemistry and Petrology

Cite this

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abstract = "Mossbauer spectra for 14 Cr-bearing spinels, separated from spinel lherzolite xenoliths, were measured to study their Fe2+-Fe3+ crystallographic ordering. Spectra acquired at 298 and 77 K suggest that both Fe2+ and Fe3+ are tetrahedrally coordinated in lherzolite Cr-bearing spinels with low Fe3+/Fetot ratios. The investigated Cr-spinels show similar hyperfine parameters, quadrupole splittings and isomer shifts to Mossbauer studies of upper mantle Cr-spinels from lherzolite xenoliths as reported elsewhere, suggesting the similarity in Fe2+ and Fe3+ ordering. -from Authors",

author = "S. Nasir and Lahlooh, {A. F.} and S. Mahmood and Al-Jarayesh, {I. A.}",

year = "1993",

language = "English",

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journal = "Chemie der Erde - Geochemistry",

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T1 - Ferric iron in upper mantle Cr-spinels

T2 - a Mossbauer spectroscopic study

AU - Nasir, S.

AU - Lahlooh, A. F.

AU - Mahmood, S.

AU - Al-Jarayesh, I. A.

PY - 1993

Y1 - 1993

N2 - Mossbauer spectra for 14 Cr-bearing spinels, separated from spinel lherzolite xenoliths, were measured to study their Fe2+-Fe3+ crystallographic ordering. Spectra acquired at 298 and 77 K suggest that both Fe2+ and Fe3+ are tetrahedrally coordinated in lherzolite Cr-bearing spinels with low Fe3+/Fetot ratios. The investigated Cr-spinels show similar hyperfine parameters, quadrupole splittings and isomer shifts to Mossbauer studies of upper mantle Cr-spinels from lherzolite xenoliths as reported elsewhere, suggesting the similarity in Fe2+ and Fe3+ ordering. -from Authors

AB - Mossbauer spectra for 14 Cr-bearing spinels, separated from spinel lherzolite xenoliths, were measured to study their Fe2+-Fe3+ crystallographic ordering. Spectra acquired at 298 and 77 K suggest that both Fe2+ and Fe3+ are tetrahedrally coordinated in lherzolite Cr-bearing spinels with low Fe3+/Fetot ratios. The investigated Cr-spinels show similar hyperfine parameters, quadrupole splittings and isomer shifts to Mossbauer studies of upper mantle Cr-spinels from lherzolite xenoliths as reported elsewhere, suggesting the similarity in Fe2+ and Fe3+ ordering. -from Authors

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M3 - Article

AN - SCOPUS:0027880689

SN - 0009-2819

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JF - Chemie der Erde - Geochemistry

IS - 4

ER -

Ferric iron in upper mantle Cr-spinels: a Mossbauer spectroscopic study

Abstract

ASJC Scopus subject areas

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