European Journal of Mineralogy
European Journal of Mineralogy
European Journal of Mineralogy
Articles | Volume 35, issue 1
Articles | Volume 35, issue 1
https://doi.org/10.5194/ejm-35-25-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/ejm-35-25-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 35, issue 1
Research article
 | 
06 Jan 2023
Research article |  | 06 Jan 2023

Compositional variation and zoning of epidote supergroup minerals in the Campi Flegrei geothermal field, Naples, Italy

Harvey E. Belkin and Benedetto De Vivo

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Short summary
Members of the epidote supergroup, epidote, clinozoisite, allanite, and ferriallanite, are described from the calcium–aluminum silicate and thermometamorphic zones in drill cores obtained from the Mofete and San Vito wells in the Campi Flegrei (Italy) geothermal field. Compositional zoning is ubiquitous. The epidote group encompasses nearly the complete range of coupled Al–Fe3+ substitution, and the allanite group is light rare earth element enriched.
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