European Journal of Mineralogy
European Journal of Mineralogy
European Journal of Mineralogy
Articles | Volume 32, issue 5
Articles | Volume 32, issue 5
https://doi.org/10.5194/ejm-32-469-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/ejm-32-469-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 32, issue 5
Research article
 | 
18 Sep 2020
Research article |  | 18 Sep 2020

In situ micro-FTIR spectroscopic investigations of synthetic ammonium phengite under pressure and temperature

Nada Abdel-Hak, Bernd Wunder, Ilias Efthimiopoulos, and Monika Koch-Müller

Viewed

Total article views: 1,871 (including HTML, PDF, and XML)
HTML PDF XML Total Supplement BibTeX EndNote
1,329 483 59 1,871 139 51 105
  • HTML: 1,329
  • PDF: 483
  • XML: 59
  • Total: 1,871
  • Supplement: 139
  • BibTeX: 51
  • EndNote: 105
Views and downloads (calculated since 18 Sep 2020)
Cumulative views and downloads (calculated since 18 Sep 2020)

Viewed (geographical distribution)

Total article views: 1,712 (including HTML, PDF, and XML) Thereof 1,710 with geography defined and 2 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Latest update: 08 Nov 2025
Download
Short summary
The structural response of the NH4+ molecule to temperature and pressure changes is studied in ammonium phengite. The symmetry of the molecule is lowered by increasing P or decreasing T; the type and mechanism of this lowered symmetry is different in both cases. Devolatilisation (NH4+ and OH loss) of ammonium phengite is studied as well. This study confirms the wide stability range of phengite and its volatiles and thus has important implications for N and H recycling into the deep Earth.
Read more
Share