Prof. Stephan Klemme, PhD

WWU Münster - Petrology

Principal Investigator

Institut für Mineralogie, Corrensstraße 24,

D-48149 Münster, Tel.: +49 251-8333047, 

About Me

I read mineralogy, chemistry and physics at the University of Göttingen, followed by a PhD in Earth Sciences at the Australian National University in Canberra. I spent a few years as a postdoc at Bristol University and the University of Heidelberg, before I joined Edinburgh University as a lecturer. About 10 years ago I moved to Münster University.

My main research interests are

  • Origin of lunar (and other planetary) basalts
  • Volcanism at subduction zones
  • Genesis of carbonatites and alkaline rocks
  • Metasomatism in the Earth's mantle and crust


Leitzke, F., Wegner, A., Porcher, C., Vieira, N., Conceição, R., Berndt, J., Klemme, S. (2021). Whole-rock trace element analyses via LA-ICP-MS in glasses produced by sodium borate flux fusion. Brazilian Journal of Geology, 51(2), e20200057.

Novais-Rodrigues E, Jalowitzki T, Gervasoni F, Sumino H, Bussweiler Y, Klemme S, Berndt J, Conceição RV, Schilling ME, Bertotto GW, Teles L (2021). Partial melting and subduction-related metasomatism recorded by geochemical and isotope (He-Ne-Ar-Sr-Nd) compositions of spinel lherzolite xenoliths from Coyhaique, Chilean Patagonia. Gondwana Research, 98, 257-276.

Grützner T, Hopp T, Berndt J, Rohrbach A, Klemme S. (2021). Experimental investigation of Ru isotope fractionation between metal, silicate and sulfide melts. Chemical Geology, 580, 120384.

Rombeck, S., Vollmer, C., Roszjar, J., Sarafian, A., Klemme, S. (2021). How do secondary iron enrichments form within basaltic eucrites? An experimental approach. Meteoritics & Planetary Science, 56(5), 911-928

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. (2021). A hydrothermal apparatus for X-ray absorption spectroscopy of hydrothermal fluids at DESY, Review of Scientific Instruments, 92, 063903.

Morlok, A., Renggli, C., Charlier, B., Reitze, M.P., Klemme, S., Namur, O., Sohn, M., Martin, D., Weber, I., Stojic, A.N., Hiesinger, H., Joy, K.H., Wogelius, R., Tollan, P., Carli, C., Bauch, K.E., Helbert, J.  (2021). Mid-infrared reflectance spectroscopy of synthetic glass analogs for mercury surface studies. Icarus, 361, 114363.

Liu, Z., Shea, J., Foley, S.F., Bussweiler, Y., Rohrbach, A., Klemme, S., Berndt, J. (2021). Clarifying source assemblages and metasomatic agents for basaltic rocks in eastern Australia using olivine phenocryst compositions. Lithos, 390–391, 106122.

Renggli, C., Klemme, S. (2021). Experimental investigation of Apollo 16 “Rusty Rock” formation by a lunar fumarolic gas. Journal of Geophysical Research - Planets, 126, e2020JE006609.

Flemetakis, S., Klemme, S., Stracke, A., Genske, F., Berndt, J., Rohrbach, A. (2021). Constraining the presence of amphibole and mica in metasomatized mantle sources through halogen partitioning experiments. Lithos, 380-381, 105859.


Flemetakis, S., Berndt, J., Klemme, S., Genske, F., Cadoux, A., Louvel, M., Rohrbach, A. (2020). An Improved Electron Microprobe Method for the Analysis of Halogens in Natural Silicate Glasses. Microscopy and Microanalysis, 26, 1-10.

Klemme S., Berndt J. (2020). Trace element partitioning between pyrochlore, microlite, fersmite and silicate melts. Geochemical Transactions, 21, 9.

Renggli, C., Klemme, S. (2020) Experimental constraints on metal transport in fumarolic gases. Journal of Volcanology and Geothermal Research, 400, 106929.

Rzehak LJA, Rohrbach A, Vollmer C, Höfer HE, Berndt J, Klemme S. (2020). Ferric-ferrous iron ratios of experimental majoritic garnet and clinopyroxene as a function of oxygen fugacity. American Mineralogist, 105, 1866-1874.

Steenstra, E.S., Berndt, J., Klemme, S., Fei, Y., van Westrenen, W. (2020). A possible high T core formation on the Moon, Earth and Planetary Science Letters, 538, 116222.

Vollmer C, Rombeck S, Roszjar J, Sarafian AR, Klemme S. (2020). The brecciated texture of polymict eucrites: Petrographic investigations of unequilibrated meteorites from the Antarctic Yamato collection. Meteoritics and Planetary Science, 55, 558-574.

Steenstra, E.S., Berndt, J., Klemme, S., Snape, J.F., Bullock, E.S., van Westrenen, W. (2020). The fate of sulfur and chalcophile elements during crystallization of the lunar magma ocean, Journal of Geophysical Research - Planets, 125, e2019JE006328.

Bussweiler, Y., Gervasoni, F., Rittner, M., Berndt, J., Klemme, S. (2020). Trace element mapping of high-pressure, high-temperature experimental samples with laser ablation ICP time-of-flight mass spectrometry-illuminating melt-rock reactions in the lithospheric mantle, Lithos, 352-353, 105282.

Steenstra, E.S., van Haaster, F., van Mulligen, R.M., Flemetakis, S., Berndt, J., Klemme, S, van Westrenen W. (2020). An experimental assessment of the chalcophile behavior of F, Cl, Br and I: implications for the fate of halogens during planetary accretion and the formation of magmatic ore deposits, Geochimica et Cosmochimica Acta, 273, 275-290.

Steenstra, E.S., Berndt, J., Klemme, S., van Westrenen, W., Bullock, E.S. (2020). Addressing matrix effects for 193 nm excimer LA-ICP-MS analyses of Fe-rich sulfides and a new predictive model, Journal of Analytical Atomic Spectrometry, 35, 113391.

Steenstra E.S., Berndt, J., Klemme, S., Rohrbach, A., Bullock, E.S., van Westrenen, W. (2020). 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.

Yusenko, K.V., Spektor, K., Khandarkhaeva, S., Fedotenko, T., Pakhomova, A., Kupenko, I., Rohrbach, A., Klemme, S., Chrichton, W.A., Dyachkova, T.V., Tyutyunnik, A.P., Zainulin, Y.G., Dubrovinksy, L.S., Gromilov, S.A. (2020). Decomposition of single-source precursors under high-temperature high-pressure to access osmium-platinum refractory alloys. Journal of Alloys and Compounds, 813, 152121.

Steenstra, E.S., Trautner, V.T., Berndt, J., Klemme, S., van Westrenen, W. 2020. Trace element partitioning between sulfide-, metal- and silicate melts at highly reduced conditions: insights into the distribution of volatile elements during core formation in reduced bodies. Icarus, 335, 113408.

Colombo Carniel, L., Vieira Conceição, R., Klemme, S., Berndt, J., Jalowitzki, T. (2020). Origin and redox conditions of the Rosário-6 alnöite of southern Brazil: implications for the state of the mantle during Gondwana breakup. Lithos, 376-377, 105751.

Steenstra, E.S., Seegers, A.X., Putter, R., Berndt, J., Klemme, S., Matveev, S., Bullock, E.S., van Westrenen, W. 2020. Metal-silicate partitioning systematics of siderophile elements at reducing conditions: A new experimental database. Icarus, 335, 113391.

Mavrogonatos, C., Voudouris, P., Berndt, J., Klemme, S., Zaccarini, F., Spry, P., Melfos, V., Tarantola, A., Keith, M., Klemd, R., Haase, K. 2020. Trace elements in magnetite from the Pagoni Rachi porphyry prospect, NE Greece: Implications for Ore Genesis and Exploration. Minerals, 9, 725.


Baziotis, I.P., Xydous, S., Asimow, P.D., Mavrogonatos, C., Flemetakis, S., Klemme, S., Berndt, J. 2019. The potential of phosphorus in clinopyroxene as a geospeedometer: examples from mantle xenoliths. Geochimica et Cosmochimica Acta, 266, 307-331.

Steenstra, E.S., Berndt, J., Klemme, S., van Westrenen, W. 2019. LA-ICP-MS analyses of Fe-rich alloys: quantification of matrix effects for 193 nm excimer laser systems. Journal of Analytical Atomic Spectrometry, 34, 222-231.

Morlok, A., Klemme, S., Weber, I., Stojic, A., Sohn, M., Hiesinger, H., Helbert, J. 2019. Mid-infrared spectroscopy of planetary analogs: A database for planetary remote sensing. Icarus, 324, 86-103.

Pantazidis, A., Baziotis, I., Solomonidou, A., Manoutsoglou, E., Palles, D., Kamitsos, E., Karageorgis, A., Profitiliotis, G., Kondoyanni, M., Klemme, S., Berndt, J., Ming, D., Asimow, P.D. 2019. Santorini volcano as a potential Martian analogue: The Balos Cove Basalts. Icarus, 325, 128–140.

Sossi, P.A., Klemme, S., O'Neill, H.StC., Berndt, J., Moynier, F. 2019. Evaporation of moderately volatile elements from silicate melts: Experiments and theory. Geochimica et Cosmochimica Acta, 260, 204-231.

Genske, F., Stracke, A, Berndt, J., Klemme, S. 2019. Process-related isotope variability in oceanic basalts revealed by high-precision Sr isotope ratios in olivine-hosted melt inclusions. Chemical Geology, 524, 1-10.

Steenstra, E.S., Dankers, D., Berndt, J., Klemme, S., Matveev, S., van Westrenen, W. 2019. Significant depletion of volatile elements in the mantle of asteroid Vesta due to core formation, Icarus 317, 669-681.

Klemme, S., Berndt, J., Mavrogonatos, C., Flemetakis, S., Baziotis, I., Voudouris, P., Xydous, S., 2019. On the Color and Genesis of Prase (Green Quartz) and Amethyst from the Island of Serifos, Cyclades, Greece. Minerals, 8, 487.


Mavrogonatos, C., Voudouris, P., Spry, P.G., Melfos, V., Klemme, S., Berndt, J., Baker, T., Moritz, R., Bissig, T., Monecke, T., Zaccarini, F., 2018. Mineralogical Study of the Advanced Argillic Alteration Zone at the Konos Hill Mo–Cu–Re–Au Porphyry Prospect, NE Greece. Minerals, 8, 479.

Loroch, D., Klemme, S., Berndt, J., Rohrbach, A., 2018. Experimentally determined trace element partition coefficients between hibonite, melilite, spinel, and silicate melts. Data in Brief, 21, 2447-2463.

Steenstra, E.S., Agmon, N., Berndt, J., Klemme, S., Matveev, S., Van Westrenen, W. 2018 Depletion of potassium and sodium in mantles of Mars, Moon and Vesta by core formation. Scientific Reports 8, 7053.

Baziotis, I., Kimura, J.-I., Pantazidis, A., Klemme, S., Berndt, J., Asimow, P.D. 2018 Geophysical source conditions for basaltic lava from Santorini volcano based on geochemical modelling. Lithos, 316-317, 295-303.

Steenstra, E.S., Seegers, A.X., Eisinga, J., Tomassen, B.G.J., Webers, F.P.F., Berndt, J., Klemme, S., Matveev, S., van Westrenen, W. 2018. Evidence for a sulfur-undersaturated lunar interior from the solubility of sulfur in lunar melts and sulfide-silicate partitioning of siderophile elements. Geochimica et Cosmochimica Acta, 231, 130-156.

Yusenko, K.V., Riva. S., Wilson, A. C., Spektor, C., Bykova, E., Pakhomova, A., Tudball, A., Kupenko, I., Rohrbach, A., Klemme, S., Mazzali, F, Margadonna, S., Lavery, N.P., Brown S.G.R., 2018. High-Pressure High-Temperature tailoring of High Entropy Alloys for extreme environments, Journal of Alloys and Compounds, 738, 491-500.

Markus, K., Moroz, L., Arnold, G., Henckel, D., Hiesinger, H., Rohrbach, A., Klemme, S., 2018, 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, 43-55.

Stracke, A., Tipper E.T., Klemme, S., Bizimis, M. 2018. High temperature Mg isotope fractionation as a petrogenetic tool, Geochimica et Cosmochimica Acta, 226, 192–205.

Grützner, T., Klemme, S., Rohrbach, A., Gervasoni, F., Berndt, J. 2018. 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. 

Klemme, S., Stalder, R. 2018. Halogens in the Earth’s Mantle: What We Know and What We Don’t. In: Harlow, D., Aranovich, L. (eds) The Role of Halogens in Terrestrial and Extraterrestrial Geochemical Processes, Springer, Heidelberg, 1-24.


King, H.E., Plümper, O., Putnis, C.V., O’Neill, H.St.C., Klemme, S., Putnis, A. 2017. Mineral Surface Rearrangement at High Temperatures: Implications for Extraterrestrial Mineral Grain Reactivity. ACS Earth and Space Chemistry, 1, 2, 113-121 doi: 10.1021/acsearthspacechem.6b00016.

Smart, K.A., Cartigny, P., Tappe, S., O'Brien, H., Klemme, S. 2017. Lithospheric diamond formation as a consequence of methane-rich volatile flooding: An example from diamondiferous eclogite xenoliths of the Karelian craton (Finland). Geochimica et Cosmochimica Acta 206, 312-342.

Morlok, A., Klemme, S., Weber, I., Stojic, A., Sohn, M., Hiesinger, H. 2017. IR spectroscopy of synthetic glasses with Mercury surface composition: Analogs for remote sensing. Icarus 296, 123-138.

Milani, S., Angel, R.J., Scandolo, L., Mazzucchelli, M.L., Ballaran, T.B., Klemme, S., Domeneghetti, M.C., Miletich, R., Scheidl, K.S., Derzsi, M., Tokár, K., Prencipe, M., Alvaro, M., Nestola, F. 2017. Thermo-elastic behavior of grossular garnet at high pressures and temperatures. American Mineralogist 102, 851-859.

Grützner, T., Kohn, S.C., Bromiley, D.W., Rohrbach, A., Berndt, J., Klemme, S. 2017. The storage capacity of fluorine in olivine and pyroxene under upper mantle conditions. Geochimica et Cosmochimica Acta 208, 160-170.

Grützner, T., Klemme, S., Rohrbach, A., Gervasoni, F., Berndt, J. 2017. The role of F-clinohumite in volatile recycling processes in subduction zones. Geology 45, 443-446.

Gervasoni, F., Klemme, S., Rohrbach, A., Grützner, T., Berndt, J. 2017. Experimental constraints on mantle metasomatism caused by silicate and carbonate melts. Lithos 282-283, 173-186.

Baziotis, I., Asimow, P.D., Ntaflos, T., Boyce, J.W., McCubbin, F.M., Koroneos, A., Perugini, D., Flude, S., Storey, M., Liu, Y.S., Klemme, S., Berndt, J. 2017. Phosphorus zoning as a recorder of crystal growth kinetics: application to second-generation olivine in mantle xenoliths from the Cima Volcanic Field. Contributions to Mineralogy and Petrology 172, 58.

Gervasoni, F., Klemme, S., Rohrbach, A., Grützner, T., Berndt, J. 2017. Experimental constraints on the stability of baddeleyite and zircon in carbonate- and silicate-carbonate melts. American Mineralogist 102, 860-866.


Ziberna, L., Klemme, S. 2016. Application of thermodynamic modelling to natural mantle xenoliths: examples of density variations and pressure–temperature evolution of the lithospheric mantle. Contributions to Mineralogy and Petrology 171, 1-14.

Wijbrans, C.H., Rohrbach, A., Klemme, S. 2016. 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.

Gervasoni, F., Klemme, S., Rocha-Júnior, E.R.V., Berndt, J. 2016. Zircon saturation in silicate melts: a new and improved model for aluminous and alkaline melts. Contributions to Mineralogy and Petrology 171, 1-12.

Beyer, C., Klemme, S., Grützner, T., Ireland, T.R., Magee, C.W., Frost, D.J. 2016. Fluorine partitioning between eclogitic garnet, clinopyroxene, and melt at upper mantle conditions. Chemical Geology 437, 88-97.


Wijbrans, C.H., Klemme, S., Berndt, J., Vollmer, C. 2015. Experimental determination of trace element partition coefficients between spinel and silicate melt: the influence of chemical composition and oxygen fugacity. Contributions to Mineralogy and Petrology 169, 45-77.

Kusebauch, C., John, T., Whitehouse, M.J., Klemme, S., Putnis, A. 2015. Distribution of halogens between fluid and apatite during fluid-mediated replacement processes. Geochimica et Cosmochimica Acta 170, 225-246.

Fumagalli P., Klemme S. 2015. Mineralogy of the Earth: Phase Transitions and Mineralogy of the upper mantle. Treatise of Geophysics 2nd Edition, 7-31.