Dr. Kilian Pollok

Wissenschaftlicher Mitarbeiter und Studienberater für den M.Sc. Geowissenschaften
Dr. Kilian Pollok
Foto: Jan-Peter Kasper (Universität Jena)

Meine Forschungsinteressen...

  • Analytische Transmissionselektronenmikroskopie an Mineralen und Werkstoffen
  • Mechanismen von Mineral-Fluid-Wechselwirkungen
  • Einfluss von Kristallstruktur, Sekundärmineralen und Mikroorganismen auf die Mineralauflösung
  • Beruflicher Werdegang

    seit 07/2011: Wissenschaftlicher Mitarbeiter am Lehrstuhl für Analytische Mineralogie, Institut für Geowissenschaften, Friedrich-Schiller-Universität Jena

    04/2008 - 07/2011: Akademischer Rat am Bayerischen Geoinstitut, Universität Bayreuth; Leiter der BMBF-Nachwuchsgruppe MIMOS im Geotechnologien-Schwerpunkt "Mineraloberflächen"

    09/2005 - 03/2008: Wissenschaftlicher Mitarbeiter am Institut für Geowissenschaften der Friedrich-Schiller-Universität Jena

    1999 - 2005: Wissenschaftlicher Mitarbeiter an der WWU Münster

  • Universitätsausbildung

    2005 Promotion zum Dr. rer. nat., Betreuer: Prof. Andrew Putnis

    Titel der Dissertation: "Crystal growth patterns in solid solution systems: Case studies on oscillatory zoning and mineral replacement reactions"

    1999 - 2005: Promotionstudium an der WWU Münster

    1999 Diplom in Mineralogie an der WWU Münster

    Titel der Diplomarbeit: "Elektronenmikroskopische und mikroanalytische Untersuchungen an zonierten und anisotropen Granaten"

    1995 - 1999: Studium der Mineralogie an der Westfälischen Wilhelms-Universität Münster

    1993 - 1995: Studium der Mineralogie an der Phillips-Universität Marburg


  • Publikationen

    Seybold, L., Trepmann, C.A., Hölzl, S., Pollok, K., Langenhorst, F., Dellefant, F., Kaliwoda, M. (2023). Twinned calcite as an indicator of high differential stresses and low shock pressure conditions during impact cratering. Meteorit Planet Sci, 58: 1287-1305. https://doi.org/10.1111/maps.14056Externer Link

    Hamann, C., Kurosawa, K., Ono, H., Tada, T., Langenhorst, F., Pollok, K., Genda, H., Niihara, T., Okamoto, T., Matsui, T. (2023). Experimental evidence for shear-induced melting and generation of stishovite in granite at low (<18 GPa) shock pressure. Journal of Geophysical Research: Planets, 128, e2023JE007742. https://doi.org/10.1029/2023JE007742Externer Link

    Ondrejka, M., Uher, P., Ferenc, Š, Majzlan, J., Pollok, K., Mikuš, T., Milovská, S., Molnárová, A., Škoda, R., Kopáčik, R., Kurylo, S., Bačík, P. (2023). Monazite-(Gd), a new Gd-dominant mineral of the monazite group from the Zimná Voda REE-U-Au quartz vein, Prakovce, Western Carpathians, Slovakia. Mineralogical Magazine, 1-22. https://doi.org/10.1180/mgm.2023.37Externer Link

    Cheng, P.F., Ziegler, M., Ripka, V., Wang, H.L., Pollok, K., Langenhorst, F., Wang, D., Schaaf, P. (2022). Black Silver: Three-Dimensional Ag Hybrid Plasmonic Nanostructures with Strong Photon Coupling for Scalable Photothermoelectric Power Generation. ACS Applied Materials & Interfaces, https://doi.org/10.1021/acsami.2c01181Externer Link

    Haase, P., Kiefer, S., Pollok, K., Drahota, P., Majzlan, J. (2022) Weathering of stannite–kësterite [Cu2(Fe,Zn)SnS4] and the environmental mobility of the released elements. European Journal of Mineralogy, 34(5), 493-506. https://doi.org/10.5194/ejm-34-493-2022Externer Link

    Kodera, P., Majzlan J., Pollok, K., Kiefer, S., Simko, F., Scholtzová, E., Luptáková, J., Cawthorn, G. (2022) Ferrous hydroxychlorides hibbingite (γ-Fe2(OH)3Cl) and parahibbingite (β-Fe2(OH)3Cl) as a concealed sink of Cl and H2O in ultrabasic and granitic systems. American Mineralogist, 107(5), 826-841. https://doi.org/10.2138/am-2022-8011Externer Link

    Cheng, P., Ziegler, M., Ripka, V., Wang, H., Pollok, K., Langenhorst, F., Wang, D., & Schaaf, P. (2022). Black Silver: Three-Dimensional Ag Hybrid Plasmonic Nanostructures with Strong Photon Coupling for Scalable Photothermoelectric Power Generation. ACS Appl. Mater. Interfaces. https://doi.org/10.1021/acsami.2c01181Externer Link

    Pellegrino, L., Menegon, L., Zanchetta, S., Langenhorst, F., Pollok, K., Tumiati, S., Malaspina, N. (2021). Reaction-induced mantle weakening at high-pressure conditions: An example from garnet pyroxenites of Ulten Zone (Eastern Alps, N Italy). Journal of Geophysical Research: Solid Earth, 126, e2021JB022584. https://doi.org/10.1029/2021JB022584Externer Link

    Nabhan, S., Kah, L.C., Mishra, B., Pollok, K., Manning-Berg, A.R., van Zuilen, M.A. (2021). Structural and chemical heterogeneity of Proterozoic organic microfossils of the ca. 1 Ga old Angmaat Formation, Baffin Island, Canada. Geobiology, 19, 557– 584. https://doi.org/10.1111/gbi.12463Externer Link

    Palaniselvam, T., Mukundan, C., Hasa, I., Santhosha, A. L., Goktas, M., Moon, H., Ruttert, M., Schmuch, R., Pollok, K., Langenhorst, F., Winter, M., Passerini, S., & Adelhelm, P. (2020). Assessment on the Use of High Capacity "Sn4P3"/NHC Composite Electrodes for Sodium-Ion Batteries with Ether and Carbonate Electrolytes. Advanced Functional Materials, 2004798. https://doi.org/10.1002/adfm.202004798Externer Link

    Ziegler, M., Dathe, A., Pollok, K., Langenhorst, F., Hübner, U, Dong, W., & Schaaf, P. (2020). Metastable Atomic Layer Deposition: 3D Self-Assembly toward Ultradark Materials. ACS Nano, 14(11), 15023-15031 https://doi.org/10.1021/acsnano.0c04974Externer Link

    Nayak, P. K., Yang, L. T., Pollok, K., Langenhorst, F., Aurbach, D., & Adelhelm, P. (2019). Investigation of Li1.17Ni0.20Mn0.53Co0.10O2 as an Interesting Li- and Mn-Rich Layered Oxide Cathode Material through Electrochemistry, Microscopy, and InSitu Electrochemical Dilatometry. Chemelectrochem, 6(10), 2812-2819. https://doi.org/10.1002/celc.201900453Externer Link

    Nayak, P. K., Yang, L. T., Pollok, K., Langenhorst, F., Wondraczek, L., & Adelhelm, P. (2019). Electrochemical Performance and Ageing Mechanisms of Sol-Gel Synthesized Na-2/3[Mn3/5Fe2/5]O-2 for Sodium-Ion Batteries. Batteries & Supercaps, 2(1), 104-111. https://doi.org/10.1002/batt.201800034Externer Link

    Pang, R. L., Harries, D., Pollok, K., Zhang, A. C., & Langenhorst, F. (2019). Unique mineral assemblages of shock-induced titanium-rich melt pockets in eucrite Northwest Africa 8003. Geochemistry, 79(4), 125541. https://doi.org/10.1016/j.chemer.2019.125541Externer Link

    Santhosha, A. L., Nayak, P. K., Pollok, K., Langenhorst, F., & Adelhelm, P. (2019). Exfoliated MoS2 as Electrode for All-Solid-State Rechargeable Lithium-Ion Batteries. Journal of Physical Chemistry C, 123(19), 12126-12134. https://doi.org/10.1021/acs.jpcc.9b01816Externer Link

    Schmidt, D., Pollok, K., Matthaus, G., Nolte, S., & Langenhorst, F. (2019). Nanodeformation in enstatite single crystals: Simulation of micrometeoroid impacts by femtosecond pulsed laser experiments. Geochemistry, 79(4). https://doi.org/10.1016/j.chemer.2019.125542Externer Link

    Drunert, F., Blanz, M., Pollok, K., Pan, Z., Wondraczek, L., & Moncke, D. (2018). Copper-based opaque red glasses - Understanding the colouring mechanism of copper nanoparticles in archaeological glass samples. Optical Materials, 76, 375-381. https://doi.org/10.1016/j.optmat.2017.12.054Externer Link

    Fazio, A., Pollok, K., & Langenhorst, F. (2018). Experimental evidence for mechanical Brazil twins as an indicator of low-pressure shock metamorphism (< 17.5 GPa). Geology, 46(9), 787-790. https://doi.org/10.1130/G40198.1Externer Link

    Goktas, M., Bolli, C., Berg, E. J., Novak, P., Pollok, K., Langenhorst, F., Roeder, M. V., Lenchuk, O., Mollenhauer, D., & Adelhelm, P. (2018). Graphite as Cointercalation Electrode for Sodium-Ion Batteries: Electrode Dynamics and the Missing Solid Electrolyte Interphase (SEI). Advanced Energy Materials, 8(16), 1702724. https://doi.org/10.1002/aenm.201702724Externer Link

    Majzlan, J., Stevko, M., Chovan, M., Luptakova, J., Milovska, S., Milovsky, R., Jelen, S., Sykorova, M., Pollok, K., Gottlicher, J., & Kupka, D. (2018). Mineralogy and geochemistry of the copper-dominated neutral mine drainage at the Cu deposit Lubietova-Podlipa (Slovakia). Applied Geochemistry, 92, 59-70. https://doi.org/10.1016/j.apgeochem.2018.02.012Externer Link

    Martignier, A., Filella, M., Pollok, K., Melkonian, M., Bensimon, M., Barja, F., Langenhorst, F., Jaquet, J. M., & Ariztegui, D. (2018). Marine and freshwater micropearls: biomineralization producing strontium-rich amorphous calcium carbonate inclusions is widespread in the genus Tetraselmis (Chlorophyta). Biogeosciences, 15(21), 6591-6605. https://doi.org/10.5194/bg-15-6591-2018Externer Link

    Pang, R. L., Harries, D., Pollok, K., Zhang, A. C., & Langenhorst, F. (2018). Vestaite, (Ti4+Fe2+)Ti34+O9, a new mineral in the shocked eucrite Northwest Africa 8003. American Mineralogist, 103(9), 1502-1511. https://doi.org/10.2138/am-2018-6522Externer Link

    Gualtieri, A. F., Gandolfi, N. B., Pollastri, S., Burghammer, M., Tibaldi, E., Belpoggi, F., Pollok, K., Langenhorst, F., Vigliaturo, R., & Drazic, G. (2017). New insights into the toxicity of mineral fibres: A combined in situ synchrotron mu-XRD and HR-TEM study of chrysotile, crocidolite, and erionite fibres found in the tissues of Sprague-Dawley rats. Toxicology Letters, 274, 20-30. https://doi.org/10.1016/j.toxlet.2017.04.004Externer Link

    Martignier, A., Pacton, M., Filella, M., Jaquet, J. M., Barja, F., Pollok, K., Langenhorst, F., Lavigne, S., Guagliardo, P., Kilburn, M. R., Thomas, C., Martini, R., & Ariztegui, D. (2017). Intracellular amorphous carbonates uncover a new biomineralization process in eukaryotes. Geobiology, 15(2), 240-253. https://doi.org/10.1111/gbi.12213Externer Link

    Nakatsuka, Y., Pollok, K., Wieduwilt, T., Langenhorst, F., Schmidt, M. A., Fujita, K., Murai, S., Tanaka, K., & Wondraczek, L. (2017). Giant Faraday Rotation through Ultrasmall Fe-n(0) Clusters in Superparamagnetic FeO-SiO2 Vitreous Films. Advanced Science, 4(4), 1600299. https://doi.org/10.1002/advs.201600299Externer Link

    Pollastri, S., Gigli, L., Ferretti, P., Andreozzi, G. B., Gandolfi, N. B., Pollok, K., & Gualtieri, A. F. (2017). The crystal structure of mineral fibres. 3. Actinolite asbestos. Periodico Di Mineralogia, 86(2), 89-98. https://doi.org/10.2451/2017pm714Externer Link

    Pollastri, S., Perchiazzi, N., Gigli, L., Ferretti, P., Cavallo, A., Gandolfi, N. B., Pollok, K., & Gualtieri, A. F. (2017). The crystal structure of mineral fibres. 2. Amosite and fibrous anthophyllite. Periodico Di Mineralogia, 86(1), 55-65. https://doi.org/10.2451/2017pm693Externer Link

    Ziegler, M., Yuksel, S., Goerke, S., Weber, K., Cialla-May, D., Popp, J., Pollok, K., Wang, D., Langenhorst, F., Hubner, U., Schaaf, P., & Meyer, H. G. (2017). Growth of Hierarchically 3D Silver-Silica Hybrid Nanostructures by Metastable State Assisted Atomic Layer Deposition (MS-ALD). Advanced Materials Technologies, 2(7). https://doi.org/10.1002/admt.201700015Externer Link

    Gualtieri, A. F., Gandolfi, N. B., Pollastri, S., Pollok, K., & Langenhorst, F. (2016). Where is iron in erionite? A multidisciplinary study on fibrous erionite-Na from Jersey (Nevada, USA). Scientific Reports, 6, 37981. https://doi.org/10.1038/srep37981Externer Link

    Fischer, R. A., Nakajima, Y., Campbell, A. J., Frost, D. J., Harries, D., Langenhorst, F., Miyajima, N., Pollok, K., & Rubie, D. C. (2015). High pressure metal-silicate partitioning of Ni, Co, V, Cr, Si, and O. Geochimica Et Cosmochimica Acta, 167, 177-194. https://doi.org/10.1016/j.gca.2015.06.026Externer Link

    Peiffer, S., Behrends, T., Hellige, K., Larese-Casanova, P., Wan, M., & Pollok, K. (2015). Pyrite formation and mineral transformation pathways upon sulfidation of ferric hydroxides depend on mineral type and sulfide concentration. Chemical Geology, 400, 44-55. https://doi.org/10.1016/j.chemgeo.2015.01.023Externer Link

    Schaffner, F., Merten, D., Pollok, K., Wagner, S., Knoblauch, S., Langenhorst, F., & Buchel, G. (2015). Fast formation of supergene Mn oxides/hydroxides under acidic conditions in the oxic/anoxic transition zone of a shallow aquifer. Environmental Science and Pollution Research, 22(24), 19362-19375. https://doi.org/10.1007/s11356-015-4404-zExterner Link

    Yuksel, S., Ziegler, M., Goerke, S., Hubner, U., Pollok, K., Langenhorst, F., Weber, K., Cialla-May, D., & Popp, J. (2015). Background-Free Bottom-Up Plasmonic Arrays with Increased Sensitivity, Specificity and Shelf Life for SERS Detection Schemes. Journal of Physical Chemistry C, 119(24), 13791-13798. https://doi.org/10.1021/acs.jpcc.5b01389Externer Link

    Langenhorst, F., Harries, D., Pollok, K., & van Aken, P. A. (2014). Mineralogy and defect microstructure of an olivine-dominated Itokawa dust particle: evidence for shock metamorphism, collisional fragmentation, and LL chondrite origin. Earth Planets and Space, 66. https://doi.org/10.1186/1880-5981-66-118Externer Link

    Paikaray, S., Essilfie-Dughan, J., Gottlicher, J., Pollok, K., & Peiffer, S. (2014). Redox stability of As(III) on schwertmannite surfaces. Journal of Hazardous Materials, 265, 208-216. https://doi.org/10.1016/j.jhazmat.2013.11.068Externer Link

    Pollok, K., Heidelbach, F., John, T., & Langenhorst, F. (2014). Spherulitic omphacite in pseudotachylytes: Microstructures related to fast crystal growth from seismic melt at eclogite-facies conditions. Chemie Der Erde-Geochemistry, 74(3), 407-418. https://doi.org/10.1016/j.chemer.2014.04.001Externer Link

    Harries, D., Pollok, K., & Langenhorst, F. (2013). Oxidative dissolution of 4C- and NC-pyrrhotite: Intrinsic reactivity differences, pH dependence, and the effect of anisotropy. Geochimica Et Cosmochimica Acta, 102, 23-44. https://doi.org/10.1016/j.gca.2012.10.021Externer Link

    Langenhorst, F., Harries, D., & Pollok, K. (2013). Non-stoichiometry, defects and superstructures in sulfide and oxide minerals. Minerals at the Nanoscale, 14, 261-295. https://doi.org/10.1180/EMU-notes.14.8Externer Link

    Qui, N. V., Scholz, P., Keller, T. F., Pollok, K., & Ondruschka, B. (2013). Ozonated Multiwalled Carbon Nanotubes as Highly Active and Selective Catalyst in the Oxidative Dehydrogenation of Ethyl Benzene to Styrene. Chemical Engineering & Technology, 36(2), 300-306. https://doi.org/10.1002/ceat.201200354Externer Link

    Sitte, J., Pollok, K., Langenhorst, F., & Kusel, K. (2013). Nanocrystalline Nickel and Cobalt Sulfides Formed by a Heavy Metal-Tolerant, Sulfate-Reducing Enrichment Culture. Geomicrobiology Journal, 30(1), 36-47. https://doi.org/10.1080/01490451.2011.653082Externer Link

    Hellige, K., Pollok, K., Larese-Casanova, P., Behrends, T., & Peiffer, S. (2012). Pathways of ferrous iron mineral formation upon sulfidation of lepidocrocite surfaces. Geochimica Et Cosmochimica Acta, 81, 69-81. https://doi.org/10.1016/j.gca.2011.12.014Externer Link

    Harries, D., Pollok, K., & Langenhorst, F. (2011). Translation interface modulation in NC-pyrrhotites: Direct imaging by TEM and a model toward understanding partially disordered structural states. American Mineralogist, 96(5-6), 716-731. https://doi.org/10.2138/am.2011.3644Externer Link

    Pollok, K., Putnis, C. V., & Putnis, A. (2011). Mineral Replacement Reactions in Solid Solution-Aqueous Solution Systems: Volume Changes, Reactions Paths and End-Points Using the Example of Model Salt Systems. American Journal of Science, 311(3), 211-236. https://doi.org/10.2475/03.2011.02Externer Link

    Qui, N. V., Scholz, P., Krech, T., Keller, T. F., Pollok, K., & Ondruschka, B. (2011). Multiwalled carbon nanotubes oxidized by UV/H2O2 as catalyst for oxidative dehydrogenation of ethylbenzene. Catalysis Communications, 12(6), 464-469. https://doi.org/10.1016/j.catcom.2010.11.007Externer Link

    Sushil, S., Scholz, P., Pollok, K., Ondruschka, B., & Batra, V. S. (2011). Application of industrial waste based catalysts for total oxidation of propane. Chemical Engineering Journal, 166(2), 568-578. https://doi.org/10.1016/j.cej.2010.11.024Externer Link

    Hopf, J., Langenhorst, F., Pollok, K., Merten, D., & Kothe, E. (2009). Influence of microorganisms on biotite dissolution: An experimental approach. Chemie Der Erde-Geochemistry, 69, 45-56. https://doi.org/10.1016/j.chemer.2008.11.001Externer Link

    Nigrovski, B., Scholz, P., Krech, T., Qui, N. V., Pollok, K., Keller, T., & Ondruschka, B. (2009). The influence of microwave heating on the texture and catalytic properties of oxidized multi-walled carbon nanotubes. Catalysis Communications, 10(11), 1473-1477. https://doi.org/10.1016/j.catcom.2009.03.023Externer Link

    Nigrovski, B., Zavyalova, U., Scholz, P., Pollok, K., Muller, M., & Ondruschka, B. (2008). Microwave-assisted catalytic oxidative dehydrogenation of ethylbenzene on iron oxide loaded carbon nanotubes. Carbon, 46(13), 1678-1686. https://doi.org/10.1016/j.carbon.2008.07.009Externer Link

    Pollok, K., Lloyd, G. E., Austrheim, H., & Putnis, A. (2008). Complex replacement patterns in garnets from Bergen Arcs eclogites: A combined EBSD and analytical TEM study. Chemie Der Erde-Geochemistry, 68(2), 177-191. https://doi.org/10.1016/j.chemer.2007.12.002Externer Link

    Zavyalova, U., Nigrovski, B., Pollok, K., Langenhorst, F., Muller, B., Scholz, P., & Ondruschka, B. (2008). Gel-combustion synthesis of nanocrystalline spinel catalysts for VOCs elimination. Applied Catalysis B-Environmental, 83(3-4), 221-228. https://doi.org/10.1016/j.apcatb.2008.02.015Externer Link

    Geisler, T., Seydoux-Guillaume, A. M., Poeml, P., Golla-Schindler, U., Berndt, J., Wirth, R., Pollok, K., Janssen, A., & Putnis, A. (2005). Experimental hydrothermal alteration of crystalline and radiation-damaged pyrochlore. Journal of Nuclear Materials, 344(1-3), 17-23. https://doi.org/10.1016/j.jnucmat.2005.04.009Externer Link

    Geisler, T., Berndt, J., Meyer, H. W., Pollok, K., & Putnis, A. (2004). Low-temperature aqueous alteration of crystalline pyrochlore: correspondence between nature and experiment. Mineralogical Magazine, 68(6), 905-922. https://doi.org/10.1180/0026461046860230Externer Link

    Becker, U., & Pollok, K. (2002). Molecular simulations of interfacial and thermodynamic mixing properties of grossular-andradite garnets. Physics and Chemistry of Minerals, 29(1), 52-64. https://doi.org/10.1007/s002690100211Externer Link

    Kostenko, O., Jamtveit, B., Austrheim, H., Pollok, K., & Putnis, C. (2002). The mechanism of fluid infiltration in peridotites at Almklovdalen, western Norway. Geofluids, 2(3), 203-215. https://doi.org/DOI 10.1046/j.1468-8123.2002.00038Externer Link

    Pollok, K., Jamtveit, B., & Putnis, A. (2001). Analytical transmission electron microscopy of oscillatory zoned grandite garnets. Contributions to Mineralogy and Petrology, 141(3), 358-366. https://doi.org/DOI 10.1007/s004100100248Externer Link


Tätigkeiten in wissenschaftlichen Gesellschaften

Seit 2018: stellvertr. Vorsitzender der Gesellschaft zur Förderung der Geowissenschaften Jena e.V.


2019-2020: Wissenschaftlicher Beirat der Deutschen Mineralogischen Gesellschaft (DMG)

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