Articles | Volume 35, issue 1
https://doi.org/10.5194/ejm-35-25-2023
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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.
the Creative Commons Attribution 4.0 License.
Research article
| 
06 Jan 2023
Research article |
| 06 Jan 2023
| 06 Jan 2023
Compositional variation and zoning of epidote supergroup minerals in the Campi Flegrei geothermal field, Naples, Italy
U.S. Geological Survey (Ret.), 12201 Sunrise Valley Dr., Reston,
Virginia 20192, USA
Benedetto De Vivo
Pegaso Online University, Piazza Trieste e Trento 48, 80132 Naples,
Italy
Department of Geosciences, Virginia Tech, Blacksburg, Virginia 24061,
USA
Related authors
Harvey E. Belkin and Ray Macdonald
Eur. J. Mineral., 33, 537–570, https://doi.org/10.5194/ejm-33-537-2021, https://doi.org/10.5194/ejm-33-537-2021, 2021
Short summary
Short summary
Zr-bearing accessory minerals in granites from Scotland and Northern Ireland, UK, have been examined with a scanning electron microscope and their compositions analyzed by electron microprobe. Four types of zircon were identified: magmatic, late-stage magmatic, and two hydrothermal types. Baddeleyite, dalyite, zirconolite, a eudialyte-group mineral, probable lemoynite, and Zr-bearing aegirine were also identified. These accessory minerals are used to help define the magmatic environment.
Rosario Esposito, Daniele Redi, Leonid V. Danyushevsky, Andrey Gurenko, Benedetto De Vivo, Craig E. Manning, Robert J. Bodnar, Matthew Steele-MacInnis, and Maria-Luce Frezzotti
Eur. J. Mineral., 35, 921–948, https://doi.org/10.5194/ejm-35-921-2023, https://doi.org/10.5194/ejm-35-921-2023, 2023
Short summary
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Despite many articles published about eruptions at Mt. Somma–Vesuvius (SV), the volatile contents of magmas associated with mafic (quasi-primitive) melts were not directly analyzed for many eruptions based on melt inclusions (MIs). We suggest that several high-Fo olivines formed at depths greater than those of the carbonate platform based on MI chemical composition. We also estimated that 347 to 686 t d-1 of magmatic CO2 exsolved from SV magmas during the last 3 centuries of volcanic activity.
Harvey E. Belkin and Ray Macdonald
Eur. J. Mineral., 33, 537–570, https://doi.org/10.5194/ejm-33-537-2021, https://doi.org/10.5194/ejm-33-537-2021, 2021
Short summary
Short summary
Zr-bearing accessory minerals in granites from Scotland and Northern Ireland, UK, have been examined with a scanning electron microscope and their compositions analyzed by electron microprobe. Four types of zircon were identified: magmatic, late-stage magmatic, and two hydrothermal types. Baddeleyite, dalyite, zirconolite, a eudialyte-group mineral, probable lemoynite, and Zr-bearing aegirine were also identified. These accessory minerals are used to help define the magmatic environment.
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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.
Members of the epidote supergroup, epidote, clinozoisite, allanite, and ferriallanite, are...
