Dr. Arno Rohrbach

Dr. Arno Rohrbach

Corrensstr. 24, room 125
48149 Münster

T: +49 251 83-36138
F: +49 251 83-38397

  • Teaching

    • Vorlesung und Übungen „Experimental methods in Petrology”
      (Ulmer, Rohrbach, Mann, Wohlers)
    • Übungen zu Baumaterial der Erde
      Vollmer, Rohrbach
    • Vorlesung „Gesteinsbildende Minerale“
      (Rohrbach)
    • „Mikroskopie der gesteinsbildenden Minerale“
      (Schmid-Beurmann, John, Rohrbach)
    • Field camp
      (1 wöchig, Harz)
 

  • Research Areas

    • Redox processes in the Earth’s deep mantle
    • Volatiles in Earth’s mantle and the deep carbon cycle
    • Metal – silicate element partitioning and the formation of Earth’s core
    • Improvements in valence state determination using transmission electron microscopy

  • CV

    Education

    Doctoral degree at the Institut für Mineralogie, Westfälische Wilhelms-Universität Münster, Germany. Thesis: The oxidation state of the Earth's asthenosphere; high–pressure experiments and energy–filtered TEM analyses. Advisor: Prof. C. Ballhaus
    Studies in mineralogy, Institut für Mineralogie, Westfälische Wilhelms-Universität Münster, Germany
    Diploma in mineralogy at the Institut für Mineralogie, Westfälische Wilhelms-Universität Münster. Thesis: Petrologische Untersuchungen an Pikriten der Salomonen Inseln (in German).

    Positions

    Research Associate (Akademischer Rat), Institut für Mineralogie, Westfälische Wilhelms-Universität Münster
    Junior Professor for analytical petrology at the Institut für Mineralogie, Westfälische Wilhelms-Universität Münster
    Post-doctoral researcher at the Institute of Geochemistry and Petrology, ETH Zürich, Switzerland
    Research assistant (doctoral candidate) at the Westfälische Wilhelms-Universität Münster and Universität Bonn

    Honors

    Bernd Rendel Prize – German Research Foundation (DFG)

  • Projects

    • CRC TRR 170 - C01: Experimental constraints on volatile element partitioning during core formation on the terrestrial planets ( – )
      Subproject in DFG-Joint Project Hosted at the University of Münster: DFG - Collaborative Research Centre | Project Number: TRR 170/2
    • CRC TRR 170 - C01: Partitioning of siderophile volatile elements during core formation ( – )
      Subproject in DFG-Joint Project Hosted outside the University of Münster: DFG - Collaborative Research Centre | Project Number: TRR 170/1
    • Redox controls on phase relations and melting in the Earth's upper mantle ( – )
      Own Resources Project
    • P-T-fO2 stability of reduced phases in the deep mantle: experimental investigations in the system Fe-Ni-C-S ( – )
      Own Resources Project

  • Publications

    • Pangritz, P; Rohrbach, A; Vollmer, C; Berndt, J, Müller, S; Radic, D; Basten, S, & Klemme, S. (). The Fe(Ni)–C–N‑phase diagram at 10 GPa—implications for nitrogen and carbon storage in the deep mantle. Contributions to Mineralogy and Petrology, 179(3), 1–14. doi: 10.1007/s00410-023-02084-y.
    • Steenstra, ES; Klaver, M; Berndt, J; Flemetakis, S; Rohrbach, A, & Klemme, S. (). Thermal Stability of F-rich Phlogopite and K-richterite during Partial Melting of Metasomatized Mantle Peridotite with Implications for Deep Earth Volatile Cycles. Journal of Geophysical Research - Solid Earth, 129(3), e2023JB0. doi: 10.1029/2023JB028202.
    • 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, Article 45. doi: 10.1007/s00410-024-02118-z.

    • Liu, Z; Rohrbach, A; Tiraboschi, C; Foley, SF; Berndt, J, & Klemme, S. (). The effect of COH fluids on partial melting of eclogite and lherzolite under moderately oxidizing and reducing conditions. Chemical Geology, 121219. doi: 10.1016/j.chemgeo.2022.121219.
    • Tiraboschi, C; McCammon, C; Rohrbach, A; Klemme, S; Berndt, J, & Sanchez-Valle, C. (). Preferential mobilisation of oxidised iron by slab-derived hydrous silicate melts. Geochemical Perspectives Letters, 24, 43–47. doi: 10.7185/geochemlet.2304.
    • Haupt, CP; Renggli, CJ; Klaver, M; Steenstra, ES; Berndt, J; Rohrbach, A, & Klemme, S. (). Experimental and petrological investigations into the origin of the lunar Chang'e 5 basalts. Icarus, 402, 15625. doi: 10.1016/j.icarus.2023.115625.
    • Herms, P; Raase, P; Giehl, C; Aradi, LE; Fußwinkel, T; Rohrbach, A, & Möller, A. (). High-pressure melting in metapelites of a 2 Ga old subducted oceanic crust (Usagaran belt, Tanzania): implications from melt inclusions, fluid inclusions and thermodynamic modelling. Contributions to Mineralogy and Petrology, 178, Article 84. doi: https://doi.org/10.1007/s00410-023-02063-3.

    • 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(4), 1108–1111. doi: 10.1021/acsearthspacechem.2c00020.
    • Flemetakis, S; Tiraboschi, C; Rohrbach, A; Berndt, J, & Klemme, S. (). The stability of antigorite in subduction zones revisited: The effect of F on antigorite stability and its breakdown reactions at high pressures and high temperatures, with implications for the geochemical cycles of halogens. Contributions to Mineralogy and Petrology, 177, 70. doi: 10.1007/s00410-022-01934-5.
    • Steenstra, ES; Berndt, J; Rohrbach, A; Bullock, ES; van Westrenen, W; Klemme, S, & Walter, MJ. (). Partitioning of Ru, Pd, Ag, Re, Pt, Ir and Au between sulfide-, metal- and silicate liquid at highly reduced conditions: implications for terrestrial accretion and aubrite parent body evolution. Geochimica et Cosmochimica Acta, 336, 15–32. doi: 10.1016/j.gca.2022.08.021.
    • Krug M, Saki M, Ledoux E, Gay JP, Chantel J, Pakhomova A, Husband R, Rohrbach A, Klemme S, Thomas C, Merkel S, & Sanchez-Valle C. (). Textures induced by the coesite-stishovite transition and implications for the visibility of the X-discontinuity. Geochemistry, Geophysics, Geosystems, 23(10), e2022GC010544. doi: https://doi.org/10.1029/2022GC010544.

    • Schmidt S, Schäfer E, Bürklein S, Rohrbach A, & Donnermeyer D. (). Minimal Dentinal Tubule Penetration of Endodontic Sealers in Warm Vertical Compaction by Direct Detection via SEM Analysis. Journal of Clinical Medicine, 10(19), 4440. doi: 10.3390/jcm10194440.
    • Donnermeyer D, Schmidt S, Rohrbach A, Berlandi J, Bürklein S, & Schäfer E. (). Debunking the Concept of Dentinal Tubule Penetration of Endodontic Sealers: Sealer Staining with Rhodamine B Fluorescent Dye Is an Inadequate Method. Materials (Basel), 14(12), 3211. doi: 10.3390/ma14123211.
    • Flemetakis S, Klemme, Stracke A, Genske F, Berndt J, & Rohrbach A. (). Constraining the presence of amphibole and mica in metasomatized mantle sources through halogen partitioning experiments. Lithos, 380-381, 105859. doi: 10.1016/j.lithos.2020.105859.
    • Klemme S, Feldhaus M, Potapkin V, Wilke M, Borchert M, Louvel M, Loges A, Rohrbach A, Weitkamp P, Welter E, Kokh M, Schmidt C, & Testemale D. (). A hydrothermal apparatus for X-ray absorption spectroscopy of hydrothermal fluids at DESY. Review of Scientific Instruments, 92, 063903. doi: 10.1063/5.0044767.
    • Liu Z, Shea J, Foley SF, Bussweiler Y, Rohrbach A, Klemme S, & Berndt J. (). Clarifying source assemblages and metasomatic agents for basaltic rocks in eastern Australia using olivine phenocryst compositions. Lithos, 390–391, 106122. doi: 10.1016/j.lithos.2021.106122.
    • Ghosh S, Tiwari K, Miyahara M, Rohrbach A, Vollmer C, Stagno V, Ohtani E, & Ray D. (). Natural Fe-bearing aluminous bridgmanite in the Katol L6 chondrite. Proceedings of the National Academy of Sciences of the United States of America (PNAS), 118(40), e2108736118–. doi: 10.1073/pnas.2108736118.
    • Grützner T, Hopp T, Berndt J, Rohrbach A, & Klemme S. (). Experimental investigation of Ru isotope fractionation between metal, silicate and sulfide melts. Chemical Geology, 580, 120384. doi: 10.1016/j.chemgeo.2021.120384.

    • Rzehak LJA, Rohrbach A, Vollmer C, Höfer HE, Berndt J, & Klemme S. (). Ferric-ferrous iron ratios of experimental majoritic garnet and clinopyroxene as a function of oxygen fugacity. American Mineralogist, 105, 1866–1874. doi: 10.2138/am-2020-7265.
    • Yusenko KV, Spektor K, Khandarkhaeva S, Fedotenko T, Pakhomova A, Kupenko I, Rohrbach A, Klemme S, Crichton WA, Dyachkova TV, Tyutyunnik AP, Zainulin YG, Dubrovinsky LS, & Gromilov SA. (). Decomposition of single-source precursors under high-temperature high-pressure to access osmium-platinum refractory alloys. Journal of Alloys and Compounds, 813, 152121. doi: 10.1016/j.jallcom.2019.152121.
    • Flemetakis S, Berndt J, Klemme S, Genske F, Cadoux A, Louvel M, & Rohrbach A. (). Erratum: An improved electron microprobe method for the analysis of halogens in natural silicate glasses (Microscopy and Microanalysis (2020) 26:5 (857-866)). Microscopy and Microanalysis, 26(5), 1076. doi: 10.1017/S1431927620024551.
    • Flemetakis S, Berndt J, Klemme S, Genske F, Cadoux A, Louvel M, & Rohrbach A. (). An Improved Electron Microprobe Method for the Analysis of Halogens in Natural Silicate Glasses. Microscopy and Microanalysis, 26, 1–10. doi: 10.1017/S1431927620013495.
    • Steenstra ES, Berndt J, Klemme S, Rohrbach A, Bullock E, van, & Westrenen W. (). An experimental assessment of the potential of sulfide saturation of the source regions of eucrites and angrites: Implications for asteroidal models of core formation, late accretion and volatile element depletions. Geochimica et Cosmochimica Acta, 269, 39–62. doi: 10.1016/j.gca.2019.10.006.

    • Sanchez-Valle C, Wang J, & Rohrbach A. (). Effect of calcium on the elasticity of majoritic garnets and the seismic gradients in the mantle transition zone. Physics of the Earth and Planetary Interiors, 293.
    • Hakim K, Spaargaren R, Grewal DS, Rohrbach A, Berndt J, Dominik C, van, & Westrenen W. (). Mineralogy, Structure, and Habitability of Carbon-Enriched Rocky Exoplanets: A Laboratory Approach. Astrobiology, 19. doi: 10.1089/ast.2018.1930.

    • Markus K, Moroz L, Arnold G, Henckel D, Hiesinger H, Rohrbach A, & Klemme S. (). Reflectance spectra of synthetic Fe-free ortho-and clinoenstatites in the UV/VIS/IR and implications for remote sensing detection of Fe-free pyroxenes on planetary surfaces. Planetary and Space Science, 159. doi: 10.1016/j.pss.2018.04.006.
    • Grützner T, Klemme S, Rohrbach A, Gervasoni F, & Berndt J. (). The effect of fluorine on the stability of wadsleyite: Implications for the nature and depths of the transition zone in the Earth’s mantle. Earth and Planetary Science Letters, 482, 236–244. doi: 10.1016/j.epsl.2017.11.011.
    • Yusenko KV, Riva S, Crichton WA, Spektor K, Bykova E, Pakhomova A, Tudball A, Kupenko I, Rohrbach A, Klemme S, Mazzali F, Margadonna S, Lavery NP, & Brown SGR. (). High-pressure high-temperature tailoring of high entropy alloys for extreme environments. Journal of Alloys and Compounds, 738, 491–500. doi: 10.1016/j.jallcom.2017.12.216.
    • Loroch D, Klemme S, Berndt J, & Rohrbach A. (). Experimentally determined trace element partition coefficients between hibonite, melilite, spinel, and silicate melts. Data in Brief, 21, 2447–2463. doi: 10.1016/j.dib.2018.10.100.

    • Ballhaus C, Fonseca ROC, Münker, C, Rohrbach A, Nagel T, Speelmanns IM, Helmy HM, Zirner A, Vogel AK, & Heuser A. (). The great sulfur depletion of Earth's mantle is not a signature of mantle–core equilibration. Contributions to Mineraloly and Petrology, 172, 68.
    • Grützner T, Kohn SC, Bromiley DW, Rohrbach A, Berndt J, & Klemme S. (). The storage capacity of fluorine in olivine and pyroxene under upper mantle conditions. Geochimica et Cosmochimica Acta, 208, 160–170. doi: 10.1016/j.gca.2017.03.043.
    • Gervasoni F, Klemme S, Rohrbach A, Grützner T, & Berndt J. (). Experimental constraints on mantle metasomatism caused by silicate and carbonate melts. Lithos, 282-283, 173–186. doi: 10.1016/j.lithos.2017.03.004.
    • Grützner T, Klemme, S, Rohrbach, A, Gervasoni, F, & Berndt J. (). The role of F-clinohumite in volatile recycling processes in subduction zones. Geology, 45(5), 443–446. doi: 10.1130/G38788.1.
    • Gervasoni F, Klemme S, Rohrbach A, Grützner T, & Berndt J. (). Experimental constraints on the stability of baddeleyite and zircon in carbonate- and silicate-carbonate melts. American Mineralogist, 102, 860–866. doi: 10.2138/am-2017-5870.
    • Heckmann A, Meister P, Wilhelm Meyer H, Rohrbach A, Winter M, & Placke T. (). Synthesis of spherical graphite particles and their application as cathode material in dual-ion cells. ECS Transactions, 66(11).

    • Wijbrans CH, Rohrbach A, & Klemme S. (). An experimental investigation of the stability of majoritic garnet in the Earth’s mantle and an improved majorite geobarometer. Contributions to Mineralogy and Petrology, 171(50). doi: 10.1007/s00410-016-1255-7.

    • Heckmann A, Meister P, Meyer H, Rohrbach A, Winter M, & Placke T. (). Synthesis of Spherical Graphite Particles and Their Application as Cathode Material in Dual-Ion Cells. ECS Transactions, 66(11), 1–12. doi: 10.1149/06611.0001ecst.

    • Rohrbach A, Ghosh S, Schmidt MW, Wijbrans CH, & Klemme S. (). The stability of Fe-Ni carbides in the Earth's mantle: Evidence for a low Fe-Ni-C melt fraction in the deep mantle. Earth and Planetary Science Letters, 388, 211–221. doi: 10.1016/j.epsl.2013.12.007.
    • Schmidt MW, Gao C, Golubkova A, Rohrbach A, & Connolly JAD. (). Natural moissanite (SiC) – a low temperature mineral formed from highly fractionated ultrareducing COH-fluids. Progress in Earth and Planetary Sciences, 2014(1:27). doi: 10.1186/s40645-014-0027-0.
    • Wijbrans CH, Niehaus O, Rohrbach A, Pöttgen R, & Klemme S. (). Thermodynamic and magnetic properties of knorringite garnet (Mg3Cr2Si3O12) based on low-temperature calorimetry and magnetic susceptibility measurements. Physics and Chemistry of Minerals, 41, 341–346. doi: 10.1007/s00269-013-0653-x.

    • Ballhaus C, Laurenz V, Münker C, Fonseca ROC, Albarède F, Rohrbach A, Lagos M, Schmidt MW, Jochum K, Stoll B, Weis U, Helmy HM, & Fonseca RO. (). The U/Pb ratio of the Earth's mantle-A signature of late volatile addition. Earth and Planetary Science Letters, 362, 237–245. doi: 10.1016/j.epsl.2012.11.049.
    • Rosa AD, Mezouar M, Garbarino G, Bouvier P, Ghosh S, Rohrbach A, & Sanchez-Valle C. (). Single-crystal equation of state of phase D to lower mantle pressures and the effect of hydration on the buoyancy of deep subducted slabs. Journal of Geophysical Research: Solid Earth, 118, 6124–6133. doi: 10.1002/2013JB010060.
    • Klemme S, John T, Wessels M, Kusebauch C, Berndt J, Rohrbach A, & Schmid-Beurmann P. (). Synthesis of trace element bearing single crystals of Chlor-Apatite (Ca5(PO4)3Cl) using the flux growth method. Chemistry Central Journal, 7, 56. doi: 10.1186/1752-153X-7-56.

    • Klemme S, Hermes W, Eul M, Wijbrans CH, Rohrbach A, & Pöttgen R. (). New thermodynamic data for CoTiO3, NiTiO3 and CoCO3 based on low-temperature calorimetric measurements. Chemistry Central Journal, 5, 54. doi: 10.1186/1752-153X-5-54.
    • Rohrbach A, Ballhaus C, Ulmer P, Golla-Schindler U, & Schonbohm D. (). Experimental Evidence for a Reduced Metal-saturated Upper Mantle. Journal of Petrology, 52(4), 717–731. doi: 10.1093/petrology/egq101.
    • Rohrbach A, & Schmidt MW. (). Redox freezing and melting in the Earth's deep mantle resulting from carbon-iron redox coupling. Nature, 472(7342), 209–212.

    • Rohrbach, Arno. (). The oxidation state of the Earth’s asthenosphere; high-pressure experiments and energy-filtered TEM analyses. (Dissertation thesis). Westfälische Wilhelms-Universität Münster.

    • Rohrbach A, Ballhaus C, Golla-Schindler U, Ulmer P, Kamenetsky VS, & Kuzmin DV. (). Metal saturation in the upper mantle. Nature, 449(7161), 456–458. doi: 10.1038/nature06183.

    • Rohrbach A, Schuth S, Ballhaus C, Munker C, Matveev S, & Qopoto C. (). Petrological constraints on the origin of arc picrites, New Georgia Group, Solomon Islands. Contributions to Mineralogy and Petrology, 149(6), 685–698. doi: 10.1007/s00410-005-0675-6.

    • Schuth S, Rohrbach A, Munker C, Ballhaus C, Garbe-Schonberg D, & Qopoto C. (). Geochemical constraints on the petrogenesis of arc picrites and basalts, New Georgia Group, Solomon Islands. Contributions to Mineralogy and Petrology, 148(3), 288–304. doi: 10.1007/s00410-004-0604-0.

  • Supervised Doctoral Studies

    Partitioning of siderophile volatile elements during core formation
    Partitioning of siderophile volatile elements during core formation
    Halogens in the mantle: An experimental and analytical study
    Rexox controls on partial melting in the Earth's mantle
    Perovskite stability in kimberlite melt