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Z. Homonnay Eötvös University Laboratory of Nuclear Chemistry Puskin u. 11-13 H-1088 Budapest Hungary

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E. Kuzmann Eötvös University Laboratory of Nuclear Chemistry Puskin u. 11-13 H-1088 Budapest Hungary

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A. Vértes Eötvös University Laboratory of Nuclear Chemistry Puskin u. 11-13 H-1088 Budapest Hungary

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I. Kubovics Eötvös University Department of Petrology and Geochemistry Muzeum krt. 4/A H-1088 Budapest Hungary

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K. Sólymos Eötvös University Department of Petrology and Geochemistry Muzeum krt. 4/A H-1088 Budapest Hungary

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Cs. Szabó Eötvös University Department of Petrology and Geochemistry Muzeum krt. 4/A H-1088 Budapest Hungary

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Abstract  

Mössbauer spectroscopy was used to study phlogopites from ultramafic xenoliths derived from alkali mafic rocks of the Transdanubian Midmountains. On the basis of evaluation of the Mössbauer spectra the following iron sites were identified /using the nomenclature published by Dyar1/ in the samples:

\documentclass{aastex} \usepackage{amsbsy} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{bm} \usepackage{mathrsfs} \usepackage{pifont} \usepackage{stmaryrd} \usepackage{textcomp} \usepackage{upgreek} \usepackage{portland,xspace} \usepackage{amsmath,amsxtra} \pagestyle{empty} \DeclareMathSizes{10}{9}{7}{6} \begin{document} $$Fe_{M1}^{2 + } , Fe_{M2}^{2 + } , Fe_{M3}^{3 + } and Fe_{tet}^{3 + } .$$ \end{document}
Quantitative analysis of all of the iron sites was performed. The Fe2+/Fe3+ ratio was found to be 3.33 for the sample for phlogopite xenolith and 2.05 for the sample from clinopyroxene-phlogopitite xenolith. There are evidences, that Fe3+ can occupy tetrahedral positions in upper mantle phlogopite, even if Si+Al>8. Our data suggest MARID+ glimmerite origin of micas.

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Journal of Radionalytical and Nuclear Chemistry
Language English
Size A4
Year of
Foundation
1968
Volumes
per Year
1
Issues
per Year
12
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 0236-5731 (Print)
ISSN 1588-2780 (Online)