European Journal of Mineralogy
European Journal of Mineralogy
European Journal of Mineralogy
Articles | Volume 33, issue 5
Articles | Volume 33, issue 5
https://doi.org/10.5194/ejm-33-571-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/ejm-33-571-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 33, issue 5
Research article
 | 
24 Sep 2021
Research article |  | 24 Sep 2021

Uniform “water” content in quartz phenocrysts from silicic pyroclastic fallout deposits – implications on pre-eruptive conditions

Mátyás Hencz, Tamás Biró, István János Kovács, Roland Stalder, Károly Németh, Alexandru Szakács, Zsófia Pálos, Zoltán Pécskay, and Dávid Karátson

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Latest update: 29 Oct 2025
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Short summary
We sampled pyroclastic fallout deposits from Hungary and from New Zealand in order to get the original water content of the quartz crystals. Our main results imply no significant change in water content of the quartz phenocrysts. All sampled crystal populations contain identical water contents in case of both the Bükk Foreland and the Kaharoa eruption. Thus, there may have been similar physicochemical conditions in the magmatic system just before the eruption.
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