H2O-present melting curve of magnesite and trace element distribution during melting of (dry) magnesite and calcite in the upper mantle

Autor: Melanie J. Sieber, HansJosef Reichmann, Robert Farla, Oona Appelt, Marcus Oelze, Christian Lathe, Monika Koch-Müller

The presence of magnesite (MgCO3) in the Earth’s mantle plays a fundamental role in reducing the melting point of the mantle [1] and forming carbonate‑rich melts such as kimberlites and carbonatites [2]. The melting curve of (dry) magnesite is we

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bbc510653cc2fa4c6f8100c43e271cc8
https://doi.org/10.5194/egusphere-egu23-7797

Hexagonal Si−Ge Class of Semiconducting Alloys Prepared by Using Pressure and Temperature

Autor: George Serghiou, Gang Ji, Jonathan P. Wright, Reinhard Boehler, Nicholas Odling, Hans J. Reichmann, Monika Koch-Müller, Daniel J. Frost, Wolfgang Morgenroth

Publikováno v: Chemistry-A European Journal
Chemistry-A European Journal, 2021, ⟨10.1002/chem.202102595⟩
Chemistry-A European Journal, Wiley-VCH Verlag, 2021, ⟨10.1002/chem.202102595⟩
Serghiou, G, Odling, N, Reichmann, H J, Ji, G, Koch-Mueller, M, Frost, D J, Wright, J P, Boehler, R & Morgenroth, W 2021, ' Hexagonal Si-Ge Class of Semiconducting Alloys Prepared Using Pressure and Temperature ', Chemistry-A European Journal, vol. 27, no. 57, pp. 14217-14224 . https://doi.org/10.1002/chem.202102595

International audience; Multi-anvil and laser-heated diamond anvil methods areused to subject Ge and Si mixtures to pressures and temperaturesof between 12 and 17 GPa and 1500 – 1800 K, respectively.Synchrotron angle dispersive X-ray diffraction, p

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2a31a53930ebc241a52d7f2e0257e502
https://doi.org/10.1002/chem.202102595

Melting relations of carbonates and trace element partitioning between carbonates and carbonate liquid in the Earth's upper mantle

Autor: Melanie J. Sieber, Max Wilke, Marcus Oelze, Oona Appelt, Franziska D.H. Wilke, Monika Koch-Müller

We examined the supra-solidus phase relations of the CaCO3-MgCO3 system and established trace element partition coefficient between carbonates and carbonate melt by conducting high pressure (6 and 9 GPa) and temperature (1300-1800 oC) experiments wit

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0177e0a4513f43ca4ddbabe277c5d750
https://doi.org/10.5194/egusphere-egu22-3367

Effect of cationic substitution on the pressure-induced phase transitions in calcium carbonate

Autor: Monika Koch-Müller, Lea Pennacchioni, Naira S. Martirosyan, Ilias Efthimiopoulos, Richard Wirth, Sandro Jahn

Publikováno v: American Mineralogist

The high-pressure CaCO3 phase diagram has been the most extensively studied within the carbonates group. However, both the diverse mineralogy of carbonates and the abundance of solid solutions in natural samples require the investigation of multi-com

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0b346cde835b4b379c81c7d9cf9fd09c
https://gfzpublic.gfz-potsdam.de/pubman/item/item_5003073

Phase relations of Ca-Mg-carbonates and trace element partition coefficients between carbonates and dolomitic melt at 6 and 9 GPa

Autor: Franziska D.H. Wilke, Melanie J. Sieber, Hans-Josef Reichmann, Monika Koch-Müller

Calcite (CaCO3) and magnesite (MgCO3) are among the most common carbonates on Earth. The presence of Ca‑Mg‑carbonates in the mantle affects the melting and phase relations of peridotites and eclogites and (partial) melting of carbonates liberates

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1d026ae681f55a8b1da49d68a0a016b5
https://doi.org/10.5194/egusphere-egu2020-2990