Articles | Volume 32, issue 5
https://doi.org/10.5194/ejm-32-521-2020
https://doi.org/10.5194/ejm-32-521-2020
Research article
 | 
15 Oct 2020
Research article |  | 15 Oct 2020

Corona formation around monazite and xenotime during greenschist-facies metamorphism and deformation

Felix Hentschel, Emilie Janots, Claudia A. Trepmann, Valerie Magnin, and Pierre Lanari

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Latest update: 22 Nov 2024
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Short summary
We analysed apatite–allanite/epidote coronae around monazite and xenotime in deformed Permian pegmatites from the Austroalpine basement. Microscopy, chemical analysis and EBSD showed that these coronae formed by dissolution–precipitation processes during deformation of the host rocks. Dating of monazite and xenotime confirmed the magmatic origin of the corona cores, while LA-ICP-MS dating of allanite established a date of ~ 60 Ma for corona formation and deformation in the Austroalpine basement.