European Journal of Mineralogy
European Journal of Mineralogy
European Journal of Mineralogy
Articles | Volume 35, issue 2
Articles | Volume 35, issue 2
https://doi.org/10.5194/ejm-35-171-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/ejm-35-171-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 35, issue 2
Research article
 | 
21 Mar 2023
Research article |  | 21 Mar 2023

Pervasive carbonation of peridotite to listvenite (Semail Ophiolite, Sultanate of Oman): clues from iron partitioning and chemical zoning

Thierry Decrausaz, Marguerite Godard, Manuel D. Menzel, Fleurice Parat, Emilien Oliot, Romain Lafay, and Fabrice Barou

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Short summary
The carbonation of peridotites occurs during the fluxing of reactive CO2-bearing fluids, ultimately producing listvenites (magnesite and quartz assemblage). We studied the most extended outcrops of listvenites worldwide, found at the base of the Semail Ophiolite (Oman). Our study highlights the partitioning of iron during early pervasive carbonation revealed by chemical zoning in matrix magnesites, and we discuss the conditions favoring the formation of Fe-rich magnesite.
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