European Journal of Mineralogy
European Journal of Mineralogy
European Journal of Mineralogy
Articles | Volume 37, issue 4
Articles | Volume 37, issue 4
https://doi.org/10.5194/ejm-37-455-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/ejm-37-455-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 37, issue 4
Research article
 | 
21 Jul 2025
Research article |  | 21 Jul 2025

Garnet growth across the quartz–coesite transition in metapelites: equilibrium vs. kinetics

Paola Manzotti, Federica Schiavi, Michel Ballèvre, and Francesco Nosenzo

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Short summary
Garnet crystals record the evolution of the pressure–temperature conditions during their growth. Thermodynamic modelling and the presence of coesite inclusions testifies that these rocks equilibrated along a pressure–temperature path crossing the equilibrium between quartz and coesite. This allows for discussing the role of energetic barriers during crystal growth. This was found insignificant, except for rocks that contain previous garnet crystals that have difficulties to achieve equilibrium.
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