Articles | Volume 34, issue 2
https://doi.org/10.5194/ejm-34-201-2022
https://doi.org/10.5194/ejm-34-201-2022
Research article
 | 
31 Mar 2022
Research article |  | 31 Mar 2022

In situ reinvestigation of reaction phase A plus high-pressure clinoenstatite to forsterite plus water in the system MgO-SiO2-H2O (MSH)

Christian Lathe, Monika Koch-Müller, Bernd Wunder, Oona Appelt, Shrikant Bhat, and Robert Farla

Related authors

Climate changes during the Late Glacial in southern Europe: new insights based on pollen and brGDGTs of Lake Matese in Italy
Mary Robles, Odile Peyron, Guillemette Ménot, Elisabetta Brugiapaglia, Sabine Wulf, Oona Appelt, Marion Blache, Boris Vannière, Lucas Dugerdil, Bruno Paura, Salomé Ansanay-Alex, Amy Cromartie, Laurent Charlet, Stephane Guédron, Jacques-Louis de Beaulieu, and Sébastien Joannin
Clim. Past, 19, 493–515, https://doi.org/10.5194/cp-19-493-2023,https://doi.org/10.5194/cp-19-493-2023, 2023
Short summary
Melting relations of Ca–Mg carbonates and trace element signature of carbonate melts up to 9 GPa – a proxy for melting of carbonated mantle lithologies
Melanie J. Sieber, Max Wilke, Oona Appelt, Marcus Oelze, and Monika Koch-Müller
Eur. J. Mineral., 34, 411–424, https://doi.org/10.5194/ejm-34-411-2022,https://doi.org/10.5194/ejm-34-411-2022, 2022
Short summary
New insights in the mechanisms of the reaction 3.65 Å phase  =  clinoenstatite + water down to nanoscales
Monika Koch-Müller, Oona Appelt, Bernd Wunder, and Richard Wirth
Eur. J. Mineral., 33, 675–686, https://doi.org/10.5194/ejm-33-675-2021,https://doi.org/10.5194/ejm-33-675-2021, 2021
Short summary
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
Eur. J. Mineral., 32, 469–482, https://doi.org/10.5194/ejm-32-469-2020,https://doi.org/10.5194/ejm-32-469-2020, 2020
Short summary

Related subject area

High-pressure study of minerals
High-pressure and high-temperature structure and equation of state of Na3Ca2La(CO3)5 burbankite
Sula Milani, Deborah Spartà, Patrizia Fumagalli, Boby Joseph, Roberto Borghes, Valentina Chenda, Juliette Maurice, Giorgio Bais, and Marco Merlini
Eur. J. Mineral., 34, 351–358, https://doi.org/10.5194/ejm-34-351-2022,https://doi.org/10.5194/ejm-34-351-2022, 2022
Short summary
Melt–rock interactions in a veined mantle: pyroxenite–peridotite reaction experiments at 2 GPa
Giulio Borghini, Patrizia Fumagalli, and Elisabetta Rampone
Eur. J. Mineral., 34, 109–129, https://doi.org/10.5194/ejm-34-109-2022,https://doi.org/10.5194/ejm-34-109-2022, 2022
Short summary
New insights in the mechanisms of the reaction 3.65 Å phase  =  clinoenstatite + water down to nanoscales
Monika Koch-Müller, Oona Appelt, Bernd Wunder, and Richard Wirth
Eur. J. Mineral., 33, 675–686, https://doi.org/10.5194/ejm-33-675-2021,https://doi.org/10.5194/ejm-33-675-2021, 2021
Short summary
Deformation of NaCoF3 perovskite and post-perovskite up to 30 GPa and 1013 K: implications for plastic deformation and transformation mechanism
Jeffrey P. Gay, Lowell Miyagi, Samantha Couper, Christopher Langrand, David P. Dobson, Hanns-Peter Liermann, and Sébastien Merkel
Eur. J. Mineral., 33, 591–603, https://doi.org/10.5194/ejm-33-591-2021,https://doi.org/10.5194/ejm-33-591-2021, 2021
Short summary
Equation of state and high-pressure phase behaviour of SrCO3
Nicole Biedermann, Elena Bykova, Wolfgang Morgenroth, Ilias Efthimiopoulos, Jan Mueller, Georg Spiekermann, Konstantin Glazyrin, Anna Pakhomova, Karen Appel, and Max Wilke
Eur. J. Mineral., 32, 575–586, https://doi.org/10.5194/ejm-32-575-2020,https://doi.org/10.5194/ejm-32-575-2020, 2020
Short summary

Cited articles

Anderson, O. and Bowen, N.L.: Das binäre System Magnesiumoxyd-Silicium-2-oxyd, Z. Anorg. Chem., 87, 283–299, 1914. 
Angel, R. J. and Hugh-Jones, D. A.: Equations of state and thermodynamic properties of enstatite pyroxenes, J. Geophys. Res., 99, 19777-19783, https://doi.org/10.1029/94JB01750, 1994. 
Angel, R. J., Frost, D. J., Ross, N. L., and Hemley, R.: Stabilities and equations of state of dense hydrous magnesium silicates, Phys. Earth Planet. In., 127, 181–196, https://doi.org/10.1016/S0031-9201(01)00227-8, 2001. 
Armstrong, J. T.: CITZAF: A package of correction programs for the quantitative electron microbeam X-ray analysis of thick polished materials, thin films, and particles, Microb. Anal., 4, 177–200, 1995. 
Bromiley, G. D. and Bromiley, F. A.: High-pressure phase transitions and hydrogen incorporation into MgSiO3 enstatite, Am. Mineral., 91, 1094–1101, https://doi.org/10.2138/am.2006.2020, 2006. 
Short summary
The equilibrium phase of A + HP clinoenstatite = forsterite + water was experimentally investigated at aH2O = 1 in situ. In cold subducting slabs, it is of relevance to transport water to large depths, initiating the formation of dense hydrous magnesium silicate (DHMS). At normal gradients, the huge water amount from this reaction induces important processes within the overlying mantle wedge. We additionally discuss the relevance of this reaction for intermediate-depth earthquake formation.