Dr. Christian Josef Renggli

Professur für Petrologie (Prof. Klemme)
Dr. Christian Josef Renggli

Corrensstr. 24, room 105
48149 Münster

T: +49 251 83-33452

Academic Profiles

  • Research Areas

    High-temperature gas-solid reactions in plenetary environments

    My research focuses on how high-temperature gas-rock interactions alter the surfaces, crusts, and the regolith of terrestrial planetary bodies. Direct sampling of volcanic or fumarolic gases in planetary environments is impossible, either because of extreme conditions such as on the Jupiter moon Io, or on Venus, or because volcanic activity has stopped billions of years ago, such as on the Moon or on Mercury. Experimental approaches are an important alternative to explore these processes in the laboratory and constrain planetary volatile budgets. I am currently funded through my DFG project “Gas-solid reactions in hot, reduced planetary environments” (project 442083018). In this project I study the behavior of S-rich volcanic and fumarolic gases at reducing conditions on the Moon and on Mercury.

    Sulfur on Mercury

    One of my current research interests is the question, what processes lead to the extreme enrichment of S on the surface of Mercury? I use silica glass tube experiments to investigate sulfidation processes under Mercury conditions that may be responsible for the enrichment of sulfur on the planets’ surface (up to 4 wt.%) (Weider et al., 2015; Mccoy et al., 2018; Nittler et al., 2018). By using graphite crucibles, gas-solid reactions can be conducted at reducing conditions that have been inferred for volcanic processes on Mercury. In an ongoing collaboration with the team of the ESA BepiColombo mid-infrared spectrometry instrument MERTIS (Mercury Radiometer and Thermal Infrared Spectrometer) at the Institut für Planetologie, Universität Münster, we use these experimental run products as reference materials for the observations expected from Mercury, allowing us to test the sulfidation hypothesis.

    Element volatilization

    An important research interest is in the speciation and volatilization behavior of chemical elements in volcanic gas phases (Renggli et al., 2017), and the volatilization from silicate melts. Within the framework of the SFB-TRR 170 “late accretion onto terrestrial planets” collaborative research center, funded by the German Research Foundation, I am an associate member and work with PhD candidates to study the effect of Cl and S on the volatilization of Zn, Cu and Ge, and the associated stable isotope fractionation. Additionally, we investigate the degassing and isotopic fraction of S and Te as a function of oxygen fugacity and temperature. Furthermore, we study the degassing of volatile and moderately volatile elements from metallic melts, to constrain their depletion in group IVB iron meteorites (Campbell and Humayun, 2005). These experiments will help us constrain the budget of late accreted materials and the earliest stages of planet formation.

  • CV


    PhD degree, Research School of Earth Sciences; Australian National University PhD Thesis: Volcanic gases and the reaction of sulfur dioxide with aluminosilicate glasses Supervisor: Prof. Dr. Penelope L. King; Advisors: Dr. Richard W. Henley, Dr. Marc Norman


    Researcher, PI of DFG project RE4601/1 “Gas-solid reactions in hot, reduced planetary environments”
    Postdoctoral researcher, TRR 170, Project B7 “Experimental and isotopic investigations of volatile element loss during magma degassing”, Institut für Mineralogie, Universität Münster
    Swiss National Science Foundation Early Postdoc.Mobility Fellow, P2SKP2_181367 “Metal degassing from basaltic melts”, Institut für Mineralogie, University Münster
    TRR 170 Fellowship, Institut für Mineralogie, University Münster
  • Projects

    • CRC TRR 170 - B07: Experimental and isotopic investigations of volatile element loss during magma degassing ()
      Subproject in DFG-Joint Project Hosted at the University of Münster: DFG - Collaborative Research Centre | Project Number: TRR 170/2
    • Gas-Feststoffreaktionen in heißen, reduzierenden planetaren Bedingungen ()
      Individual Granted Project: DFG - Individual Grants Programme | Project Number: RE 4601/1-1
  • Publications


    • Renggli, CJ; Klemme, S; Morlok, A; Berndt, J; Weber, I; Hiesinger, H; King, PL. . ‘Sulfides and hollows formed on Mercury’s surface by reactions with reducing S-rich gases.’ Earth and Planetary Science Letters 593: 117647. doi: 10.1016/j.epsl.2022.117647.

    Complete List

    • Flemetakis, S; Renggli, CJ; Pangritz, P; Berndt, J; Klemme, S. . ‘The effect of oxygen fugacity on the evaporation of boron from aluminoborosilicate melt.’ European Journal of Mineralogy 36: 173–181. doi: 10.5194/ejm-36-173-2024.
    • Haupt, CP; Renggli, CJ; Rohrbach, A; Berndt, J; Schwinger, S; Maurice, M; Schulze, M; Breuer, D; Klemme, S. . ‘Trace element partitioning in the lunar magma ocean: an experimental study.’ Contributions to Mineralogy and Petrology 179: 45. doi: 10.1007/s00410-024-02118-z.
    • Morlok, A; Renggli, C; Charlier, B; Namur, O; Klemme, S; Reitze, MP; Weber, I, Stojic, AN; Bauch KE, Hiesinger, H, Helbert, J. . ‘A mid-infrared study of synthetic glass and crystal mixtures analog to the geochemical terranes on mercury.’ Icarus 396: 115498. doi: 10.1016/j.icarus.2023.115498.
    • Steenstra, ES; Renggli, JC; Berndt, J; Klemme, S. . ‘Evaporation of moderately volatile elements from metal and sulfide melts: implications for volatile element abundances in magmatic iron meteorites.’ Earth and Planetary Science Letters 622, No. 118406. doi: 10.1016/j.epsl.2023.118406.
    • Pangritz P, Renggli CJ, Berndt J, Rohrbach A, Klemme S. . ‘Synthesis of large amounts of volatile element-bearing silicate glasses using a two-stage melting process.’ ACS Earth and Space Chemistry 6, No. 4: 1108–1111. doi: 10.1021/acsearthspacechem.2c00020.
    • Renggli, CJ; Klemme, S; Morlok, A; Berndt, J; Weber, I; Hiesinger, H; King, PL. . ‘Sulfides and hollows formed on Mercury’s surface by reactions with reducing S-rich gases.’ Earth and Planetary Science Letters 593: 117647. doi: 10.1016/j.epsl.2022.117647.
    • Klemme, S; Genske, F; Sossi, P; Berndt, ; Renggli C; Stracke, A. . ‘Cr stable isotope fractionation by evaporation from silicate melts.’ Chemical Geology 610: 121096. doi: 10.1016/j.chemgeo.2022.121096.
    • Renggli, CJ; Hellmann, JL; Burkhardt, C; Klemme, S; Berndt, J; Pangritz, P; Kleine, T. . ‘Tellurium isotope fractionation during evaporation from silicate melts.’ Geochimica et Cosmochimica Acta 339: 35–45. doi: 10.1016/j.gca.2022.10.032.
    • Morlok A, Renggli C, Charlier B, Reitze MP, Klemme S, Namur O, Sohn M, Martin D, Weber I, Stojic AN, Hiesinger H, Joy KH, Wogelius R, Tollan P, Carli C, Bauch KE, Helbert J. . ‘Mid-infrared reflectance spectroscopy of synthetic glass analogs for mercury surface studies.’ Icarus 361: 114363. doi: 10.1016/j.icarus.2021.114363.
    • Renggli C, Klemme S. . ‘Experimental investigation of Apollo 16 “Rusty Rock” formation by a lunar fumarolic gas.’ Journal of Geophysical Research: Planets 126: e2020JE006609. doi: 10.1029/2020JE006609.
    • Austrheim, Håkon; Corfu, Fernando; Renggli, Christian J. . ‘From peridotite to fuchsite bearing quartzite via carbonation and weathering: with implications for the Pb budget of continental crust.’ Contributions to Mineralogy and Petrology 176: 94. doi: 10.1007/s00410-021-01851-z.
    • Renggli CJ, Klemme S. . ‘Experimental constraints on metal transport in fumarolic gases.’ Journal of Volcanology and Geothermal Research 400: 106929. doi: 10.1016/j.jvolgeores.2020.106929.
    • Renggli, Christian J.; King, P. L.; Henley, R. W.; Guagliardo, P.; McMorrow, L.; Middleton, J. P.; Turner, M. . ‘An experimental study of SO2 reactions with silicate glasses and supercooled melts in the system anorthite–diopside–albite at high temperature.’ Contributions to Mineralogy and Petrology 174: 3. doi: https://doi.org/10.1007/s00410-018-1538-2.
    • Renggli, Christian J.; Palm, Andrew B.; King, Penelope L.; Guagliardo, P. . ‘Implications of Reactions Between SO2 and Basaltic Glasses for the Mineralogy of Planetary Crusts.’ Journal of Geophysical Research: Planets 124: 2563–2582. doi: https://doi.org/10.1029/2019JE006045.
    • Renggli, Christian J. . Volcanic gases and the reaction of sulfur dioxide with aluminosilicate glasses Dissertation thesis, Australian National University. Australian National University. doi: 10.25911/5d5142f0d9852.
    • King, P. L.; Wheeler, V. M.; Renggli, Christian J.; Palm, A. B.; Wilson, S. A.; Harrison, A. L.; Morgan, B.; Nekvasil, H.; Troitzsch, U.; Mernagh, T.; Yue, L.; Bayon, A.; DiFrancesco, N. J.; Baile, R.; Kreider, P.; Lipiński, W. . ‘Gas–solid reactions: Theory, experiments and case studies relevant to earth and planetary processes.’ Reviews in Mineralogy and Geochemistry 84, No. 1: 1–56. doi: https://doi.org/10.2138/rmg.2018.84.1.
    • Dalby, K. N.; Berger, J. A.; Brand, H. E. A.; Cairney, J. M.; Eder, K.; Eggins, S. M.; Herring, A.; Hervig, R. L.; Kreider, P. B.; Mernagh, T. P.; Palm, A. B.; Renggli, Christian J.; Troitzsch, U.; Yue, L.; King, P. L. . ‘Analytical Techniques for Probing Small-Scale Layers that Preserve Information on Gas–Solid Interactions.’ Reviews in Mineralogy and Geochemistry 84, No. 1: 103–175. doi: https://doi.org/10.2138/rmg.2018.84.4.
    • Palm, A. B.; King, P. L.; Renggli, Christian J.; Hervig, R. L.; Herring, A.; Mernagh, T. P.; Eggins, S. M.; Troitzsch, U.; Levi, B.; Kinsley, L.; Guagliardo, P. . ‘Unravelling the consequences of SO2–basalt reactions for geochemical fractionation and mineral formation.’ Reviews in Mineralogy and Geochemistry 84, No. 1: 257–283. doi: https://doi.org/10.2138/rmg.2018.84.7.
    • Renggli, Christian J.; King, Penelope L. . ‘SO2 Gas Reactions with Silicate Glasses.’ Reviews in Mineralogy and Geochemistry 84, No. 1: 229–255. doi: https://doi.org/10.2138/rmg.2018.84.6.
    • Renggli, Christian J.; King, Penelope L.; Henley, Richard W.; Norman, Marc D. . ‘Volcanic gas composition, metal dispersion and deposition during explosive volcanic eruptions on the Moon.’ Geochimica et Cosmochimica Acta 206: 296–311. doi: https://doi.org/10.1016/j.gca.2017.03.012.
    • Henley, R. W.; Brink, F. J.; King, P. L.; Leys, C.; Ganguly, J.; Mernagh, T.; Middleton, J.; Renggli, Christian J.; Sieber, M.; Troitzsch, U.; Turner, M. . ‘High temperature gas–solid reactions in calc–silicate Cu–Au skarn formation; Ertsberg, Papua Province, Indonesia.’ Contributions to Mineralogy and Petrology 172: 106. doi: https://doi.org/10.1007/s00410-017-1413-6.
    • Renggli, Christian J.; Wiesmaier, Sebastian; De Campos, Christina P.; Hess, Kai-Uwe; Dingwell, Donald B. . ‘Magma mixing induced by particle settling.’ Contributions to Mineralogy and Petrology 171: 96. doi: https://doi.org/10.1007/s00410-016-1305-1.
    • Henley, Richard W.; King, Penelope L.; Wykes, Jeremy L.; Renggli, Christian J.; Brink, Frank J.; Clark, David A.; Troitzsch, Ulrike. . ‘Porphyry copper deposit formation by sub-volcanic sulphur dioxide flux and chemisorption.’ Nature Geoscience 8, No. 3: 210–215. doi: 10.1038/ngeo2367.
    • Wiesmaier, S.; Morgavi, D.; Renggli, Christian J.; Perugini, D.; De Campos, C. P.; Hess, K.-U.; Ertel-Ingrisch, W.; Lavallée, Y.; Dingwell, D. B. . ‘Magma mixing enhanced by bubble segregation.’ Solid Earth and Discussions 6: 1007–1023. doi: https://doi.org/10.5194/se-6-1007-2015.