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• Since 05/2011 Research Associate, Institute for Mineralogy, University of Münster
• 01/2010 - 04/2011 Research Scientist, Institute for Mineralogy, University of Münster
• 01/2009 – 12/2009 Postdoctoral fellow, Max Planck Institute for Chemistry, Mainz
• 09/2005 – 12/2008 Doctoral student, Max Planck Institute for Chemistry, Mainz, and Geoscience Institute/Mineralogy, University of Frankfurt
• 06/2005 – 08/2005 Junior Geologist, GGL Diamond Corp., Northwest Territories, Canada
• 04/2002 – 10/2004 Student Assistant, Laboratory for Analytical Geochemistry, Institute of Geology and Mineralogy, University of Cologne
• 10/2000 – 03/2002 Student Assistant, Laboratory for Organic Geochemistry, Institute of Geology and Mineralogy, University of Cologne

• 12/2008 Doctorate (Dr. phil. nat.) at the Max Planck Institute for Chemistry, Mainz, and the Geoscience Institute/Mineralogy at the University of Frankfurt
  • Thesis: NanoSIMS Analysis and High Resolution Electron Microscopy of Silicate Stardust Grains from Red Giant Stars and Supernova Explosions
• 05/2005 Diploma in Geology/Paleontology at the University of Cologne
  • Thesis: Charakterisierung von Einschlüssen in ultratiefen Diamanten mit Hilfe zerstörungsfreier in-situ-Methoden

• Transmission Electron Microscopy (TEM) of complex terrestrial and meteoritic samples
• Site-specific focused ion beam (FIB) preparation of earth and planetary materials
• Nano-Secondary Ion Mass Spectrometry (NanoSIMS) analysis of meteorites and interplanetary dust particles
• Major element analysis of meteoritic stardust grains by Auger Nanoprobe (in cooperation with the Laboratory for Space Sciences, St. Louis)
• Preparation of meteoritic stardust grains by the Focused Ion Beam (FIB) technique for TEM
• Confocal Synchrotron X-Ray Fluorescence analysis of diamond inclusions and meteoritic stardust grains (ESRF, Grenoble)
• Micro-Raman spectroscopy of diamond inclusions

Current DFG Proposal
Activity of aqueous fluids in the early solar system - characterization and formation timescales of the earliest water-bearing phases in chondritic samples (within the framework of the special research program „The first 10 Million Years of the Solar System, a Planetary Materials Approach" (SPP 1385/2)).

• Leitner, Jan, Christian Vollmer, Peter Hoppe and Jutta Zipfel (2012): Characterization of Presolar Material in the CR Chondrite Northwest Africa 852. The Astrophysical Journal, Vol. 745, 38-53.
• Beyer, Christopher, Stephan Klemme, Michael Wiedenbeck, Andreas Stracke and Christian Vollmer (2012): Fluorine in nominally fluorine-free mantle minerals: Experimental partitioning of F between olivine, orthopyroxene and silicate melts with implications for magmatic processes. Earth and Planetary Science Letters, Vol. 337-338, 1-9.
• Plümper, Oliver, Helen E. King, Christian Vollmer, Quentin Ramasse, Haemyeong Jung and Hakon Austrheim (2011): The legacy of crystal-plastic deformation in olivine: high-diffusivity pathways during serpentinization. Contributions to Mineralogy and Petrology, Vol. 163, Issue 4, 701-724.
• Leitner, Jan, Peter Hoppe, Christian Vollmer and Jutta Zipfel (2010): The Inventory of Presolar Grains in Primitive Meteorites: A NanoSIMS Study of C-, N-, and O-isotopes in NWA 852. Proceedings of Science, 11th Symposium on Nuclei in the Cosmos, Heidelberg.
• Vollmer, Christian, Peter Hoppe, Frank J. Stadermann, Christine Floss and Frank E. Brenker (2009): NanoSIMS analysis and Auger electron spectroscopy of silicate and oxide stardust from the carbonaceous chondrite Acfer 094. Geochimica et Cosmochimica Acta, Vol. 73, 7127-7149.
• Vollmer, Christian (2009): Ein kosmisches Körnchen Wahrheit. Bild der Wissenschaft plus, November 2009, 11-13.
• Holzapfel, Christian, Flavio Soldera, Christian Vollmer, Peter Hoppe and Frank Mücklich (2009): TEM foil preparation of sub-micrometre sized individual grains by focused ion beam technique. Journal of Microscopy, Vol. 235, Pt.1, 59-66.
• Vollmer, Christian, Frank E. Brenker, Peter Hoppe and Rhonda M. Stroud (2009): Direct Laboratory Analysis of Silicate Stardust from Red Giant Stars. The Astrophysical Journal, Vol. 700, 774-782.
• Hoppe, Peter, Jan Leitner, Christian Vollmer, Elmar Gröner, Philipp R. Heck, Roberto Gallino and Sachiko Amari (2009): Heavy Element Abundances in Presolar Silicon Carbide Grains from Low-Metallicity AGB Stars. Publications of the Astronomical Society of Australia, Vol. 26 (3), 284-288.
• Vollmer, Christian, Peter Hoppe and Frank E. Brenker (2008): Si isotopic compositions of presolar silicate grains from red giant stars and supernovae. The Astrophysical Journal, Vol. 684, 611-617.
• Brenker, Frank E., Christian Vollmer and Sylvia Schmitz (2008): Kosmischer Staub im Nano-Labor. Forschung Frankfurt 03/2008 (Frankfurt).
• Hoppe, Peter and Christian Vollmer (2008): Presolar silicates in meteorites and interplanetary dust particles. in: IXth Torino Workshop on Evolution and Nucleosynthesis in AGB stars and the IInd Perugia Workshop on Nuclear Astrophysics (eds. R. Guandalini, S. Palmerini and M. Busso), AIP Conference Proceedings 1001, 254-261.
• Vollmer Christian, Peter Hoppe, Frank E. Brenker and Christian Holzapfel (2007): Stellar MgSiO3 Perovskite - a Shock-Transformed Stardust Silicate found in a Meteorite. The Astrophysical Journal, Vol. 666, L49-52.
• Brenker, Frank E., Sylvia Schmitz and Christian Vollmer (2007): Kosmischer Staub – Der Ur-Materie des Sonnensystems auf der Spur. Labor&more 05/2007 (Darmstadt).
• Brenker, Frank E., Christian Vollmer, Laszlo Vincze, Bart Vekemans, Anja Szymanski, Koen Janssens, Imre Szaloki, Lutz Nasdala, Werner Joswig and Felix Kaminsky (2007): Carbonates from the lower part of transition zone or even the lower mantle. Earth and Planetary Science Letters, Vol. 260, Issues 1-2, 1-9.
• Wirth, Richard, Christian Vollmer, Frank E. Brenker, Stanislav Matsyuk and Felix Kaminsky (2007): Inclusions of nanocrystalline hydrous aluminium silicate “Phase “Egg” in superdeep diamonds from Juina (Mato Grosso State, Brazil). Earth and Planetary Science Letters, Vol. 259, Issues 3-4, 384-399.
• Brenker, Frank E., Laszlo Vincze, Bart Vekemans, Lutz Nasdala, Thomas Stachel,  Christian Vollmer, Michael Kersten, Andrea Somogyi, Freddy Adams, Werner Joswig, Jeff W. Harris (2005): Detection of a Ca-rich lithology in the Earth´s deep (>300 km) convecting mantle. Earth Planetary Science Letters, Vol. 236, 579-587.

• Vollmer, Christian, Marian Horstmann, Moritz Barth, Addi Bischoff, and Andrew Putnis (2012): Timing of hydration on the CM parent body inferred from combined in-situ studies on the Maribo and Murchison chondrites. 75th Annual Meeting of the Meteoritical Society, abstr# 5062 (Cairns).
• Vollmer, Christian, Jan Leitner, Henner Busemann, Nicole Spring, Quentin Ramasse, and Despoina M. Kepaptsoglou (2012): Gentle aberration-corrected STEM analysis of 15 N- and D-Hotspots in chondritic samples. 75th Annual Meeting of the Meteoritical Society, abstr# 5061 (Cairns).
• Vollmer, Christian, Jan Leitner, Henner Busemann, Nicole Spring, Quentin Ramasse, and Despoina M. Kepaptsoglou (2012): Aberration-corrected SuperSTEM analysis of isotopically anomalous carbonaceous hotspots in primitive extraterrestrial samples. 15th European Microscopy Congress, abstr.# 0629 (Manchester).
• Vollmer, Christian, Jan Leitner, Henner Busemann, Nicole Spring and Peter Hoppe (2011): The Association of 15N-anomalous matter with stardust in chondrites Acfer 094 and Northwest Africa 852. 42nd Lunar and Planetary Science Conference, abstr.# 1720, (Houston).
• Vollmer, Christian and Peter Hoppe (2010): First Fe Isotopic Measurement of a highly 17O-enriched Stardust Silicate. 41st Lunar and Planetary Science Conference, abstr.# 1200, (Houston).
• Vollmer, Christian, Peter Hoppe and Thomas Stephan (2009): NanoSIMS Search for Interstellar Silicate Dust in Chondritic Samples. Geochimica et Cosmochimica Acta, Vol. 73 (13), Supplement 1, A1392.
• Vollmer, Christian, Frank Brenker, Peter Hoppe and Rhonda M. Stroud (2009): Transmission Electron Microscopy of Silicate Stardust detected by NanoSIMS imaging in Acfer 094. 40th Lunar and Planetary Science Conference, abstr.# 1262, (Houston).
• Vollmer, Christian, Frank J. Stadermann, Christine Floss, Peter Hoppe and Frank E. Brenker (2008). Atypical Magnesium abundances in Oxygen-rich Stardust: Nanosims and Auger analyses. 71st Annual Meeting of the Meteoritical Society, abstr.# 5054 (Matsue).
• Vollmer, Christian and Peter Hoppe (2008). Silicon isotope measurements of presolar silicates. 39th Lunar and Planetary Science Conference, abstr.# 1025 (Houston).
• Hoppe, Peter , Christian Vollmer, Philipp R. Heck, Elmar Gröner, Roberto Gallino, Sachiko Amari, and Roy S. Lewis (2008). Nanosims studies of small presolar SiC grains: C- and Si-isotopic compositions and trace element abundances. 39th Lunar and Planetary Science Conference, abstr.# 1093 (Houston).
• Vollmer Christian, Frank J. Stadermann, Maytrayee Bose, Christine Floss, Peter Hoppe and Frank E. Brenker (2007): Auger analysis of presolar silicates in Acfer 094 & the discovery of a presolar CAI. 70th Annual Meeting of the Meteoritical Society, abstr. #5107 (Tucson).
• Hoppe, Peter and Christian Vollmer (2007). Search for S-bearing presolar grains in the Acfer 094 meteorite. 70th Annual Meeting of the Meteoritical Society, abstr. # 5010 (Tucson).
• Vollmer Christian, Peter Hoppe, Frank E. Brenker and Christian Holzapfel (2007): A presolar silicate trilogy: condensation, coagulation and transformation - new insights from NanoSIMS/TEM investigations. 38th Lunar and Planetary Science Conference, abstr.# 1262 (Houston).
• Vollmer, Christian, Peter Hoppe and Frank E. Brenker (2006): Presolar silicate dust preserved in the Acfer 094 meteorite - a combined NanoSIMS/TEM study. Berichte der Deutschen Mineralogischen Gesellschaft, Beiheft zum European Journal of Mineralogy, Vol. 18, No. 1, p. 150 (Hannover).
• Vollmer, Christian, Peter Hoppe, Frank E. Brenker, Rhonda M. Stroud and Christian Holzapfel (2006): Characterization of presolar silicate grains by combined NanoSIMS/TEM studies. 69th Annual Meeting of the Meteoritical Society, abstr. #5194 (Zürich).
• Vollmer, Christian, Peter Hoppe, Frank E. Brenker and Herbert Palme (2006): A complex presolar grain in Acfer 094 - Fingerprints of a circumstellar condensation sequence?. 37th Lunar and Planetary Science Conference, abstr.# 1284 (Houston).

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