Dr. Muammar Mansor

Xu, X., Mansor, M., Li, G., Chiu, T. H., Haderlein, S. B., Kappler, A., & Joshi, P. (2025). Size-Dependent Reduction Kinetics of Iron Oxides in Single and Mixed Mineral Systems. Environmental Science & Technology.

Mansor, M., Duverger, A., Pasquier, V., Gorlas, A., Guyot, F., Berg, J. S., … Picard, A. (2025). Biogenic pyrite and metastable iron sulfides: Emerging formation pathways and geological and societal relevance. Geo-Bio Interfaces, 2, e6. doi:10.1180/gbi.2024.9

Schwerdhelm, C., Hampl, F.J., Krone, L.V., Sauter, L., Kaphegyi, K., Horstmann, L., Straub, D., Samuels, T., Mansor, M., Merino, C. and Matus, F., 2025. Microbial weathering of iron-bearing minerals in deep hydrothermally altered granitic rock of a semi-arid environment (Chilean Coastal Cordillera). Geo-Bio Interfaces, 2, p.e8.

Runge, E.,Mansor, M., Pasquier, V., Bovay, T., Marin-Carbonne, J., Fichtner, V., Kappler, A., Duda, J.P. (2025) Early diagenetic versus hydrothermal signals in pyrite from ancient metamorphic sediment-hosted massive sulfides – implications for the stability of sulfur and iron isotope records in deep time. Chemical Geology 690, 122885.

Sekerci, F., Fischer, S., Joshi, P., Peiffer, S., Kappler, A., Mansor, M. (2025) Sulfur microenvironments as hotspots for biogenic pyrite formation. Scientific Reports 15, 20148. 

Bottaro, M., Abramov, S., Amils, R., Martinez-Bonilla, A., ThomasArrigo, L., Straub, D., Mansor, M., Kleindienst, S., Kappler, A. (2025) Coupling of Fe and N cycles by nitrate-reducing Fe(II)-oxidizing microorganisms in the tidal sediments of an extreme acidic river (Río Tinto, Spain). Applied Geochemistry 190, 106488.

Mansor, M., Kappler, A., Grijalva Rodríguez, T.I., Lihan, A., Katsev, S. (2025) Biogeochemistry of an Fe- and Mn- rich stratified lake: Tasik Biru (Blue Lake), Malaysia, as a modern model habitat for the ancient ocean. Geobiology, in press.

Staicu, L.C., Cosmidis, J., Mansor, M., Paquete, C., Kappler, A. (2025) Microbial respiration – A biomineral perspective. FEMS Microbiology Ecology 101, fiaf093.

Višić, H., Duda, J.P., Fischer, S., Escudero, C., Sekerci, F., Kappler, A., Mansor, M. (2025) Experimental diagenesis reveals preservation of biosignatures in filamentous sulfur mats under hydrothermal conditions. Scientific Reports

Tenelanda-Osorio, L.I., Kappler, A., Mansor, M. (2025) Terrestrial iron biosignatures and their potential in solar system exploration for astrobiology. Earth-Science Reviews 271, 105318.

Peiffer, S., Maisch, M., Kappler, A., Schmidt, C., Mansor, M., Obst, M., & Frei, S. (2024). Kinetic constraints for the formation of microniches for microaerophilic Fe (II) oxidation. Geochimica et Cosmochimica Acta, 364, 211-223.

Runge, E., Mansor, M., Chiu, T. H., Shuster, J., Fischer, S., Kappler, A., & Duda, J. P. (2024). Hydrothermal sulfidation of biogenic magnetite produces framboid-like pyrite. Communications Earth & Environment, 5(1), 252.

Chauhan, A., Patzner, M.S., Bhattacharyya, A., Borch, T., Fischer, S., Obst, M., ThomasArrigo, L.K., Kretzschmar, R., Mansor, M., Bryce, C. and Kappler, A., 2024. Interactions between iron and carbon in permafrost thaw ponds. Science of The Total Environment, p.174321.

Valdez-Nuñez, L.F., Kappler, A., Ayala-Muñoz, D., Chávez, I.J., Mansor, M. (2024) Acidophilic sulfate-reducing bacteria: diversity, ecophysiology and applications. Environmental Microbiology Reports 16:e70019.

Bronner, R., Thompson, K., Dreher, C., Runge, E., Voggenreiter, E., Shuster, J., Wan, B., Joshi, P., Fischer, S., Duda, J.P., Kappler, A., Mansor, M. (2023) Co-reduction of Fe(III) and S0 drives Fe-S biomineral formation and phosphate mobilization. Geochemical Perspectives Letters 24, 27-32.

Bai, Y., Sun, T., Mansor, M., Joshi, P., Zhuang, Y., Haderlein, S.B., Fischer, S., Konhauser, K.O., Alessi, D.S. and Kappler, A., (2023) Networks of Dissolved Organic Matter and Organo-Mineral Associations Stimulate Electron Transfer over Centimeter Distances. Environmental Science & Technology Letters.

Domingos, J. M., E. Runge, C. Dreher, T-H. Chiu, J. Shuster, S. Fischer, A. Kappler, Jan-Peter Duda, J. Xu, and M. Mansor. (2023). Inferred pyrite growth via the particle attachment pathway in the presence of trace metals. Geochemical Perspectives Letters 26, 14-19.

Runge E.A., Mansor M., Shuster J., Fischer S., Liu Y., Lunter D.J., Kappler A., Duda J-P. (2023) Sulfidation of nano-magnetite to pyrite: Implications for interpreting paleoenvironmental proxies and biosignature records in hydrothermal sulfide deposits. Earth and Planetary Science Letters. 

Kappler A, Thompson A, Mansor M (2023) Impact of biogenic magnetite formation and transformation on biogeochemical cycles. Elements 19: 222-227, DOI: 10.2138/gselements.19.4.222.

Huang, J., Mellage, A., Pavon-Garcia, J., Gloeckler, D., Mahler, S., Elsner, M., Jakus, N., Mansor, M., Jiang, H., Kappler, A. (2023) Metabolic performance and fate of electrons during nitrate-reducing Fe(II) oxidation by the autotrophicenrichment culture KS grown at different initial Fe:N ratios. Applied and Environmental Microbiology 89, e00196-23.

Van Le, A., Muehe, M.E., Drabesch, S., Pacheco, L.J., Bayer, T., Joshi, P., Kappler, A., Mansor, M. (2022) Environmental risk of arsenic mobilization from disposed sand filter materials. Environmental Science & Technology 56, 16822-16830.

Runge, E.A., Mansor, M., Kappler, A., Duda, J.P. (2022) Microbial biosignatures in ancient deep-sea hydrothermal sulfides. Geobiology, doi.org/10.1111/gbi.12539.

Mansor, M., Alarcon, H., Xu, Jie, Ranville, J.F., Montano, D. (2022) Simultaneous Insight into Dissolution and Aggregation of Metal Sulfide Nanoparticles through Single-Particle Inductively Coupled Plasma Mass Spectrometrey. ACS Earth and Space Chemistry, doi.org/10.1021/acsearthspacechem.1c00368

Kappler, A., Bryce, C., Mansor, M., Lueder, U., Byrne, J.M., Swanner, E. (2021) An evolving view on biogeochemical cycling of iron. Nature Reviews Microbiology. https://doi.org/10.1038/s41579-020-00502-7.

Mansor, M., Drabesch, S., Bayer, T., van Le, A., Chauhan, A., Schmidtmann, J., Pfeiffer, S., Kappler, A. (2021) Application of Single particle ICP-MS to determine mass distribution and number concentrations of environmental nanoparticles and colloids in environmental samples. Environmental Science and Technology Letters. doi: 10.1021/acs.estlett.1c00314.

Huang, J., Jones, A., Waite, T.D., Chen, Y., Huang, X., Rosso, K., Kappler, A., Mansor, M., Tratynek, P.G., Zhang, H. (2021) Fe(II) Redox Chemistry in the Environment. Chemical Reviews. doi: 10.1021/acs.chemrev.0c01286

Pienkowska, A., Glodowska, M., Mansor, M., Buchner, D., Straub, D., Kleindienst, S., & Kappler, A. (2021) Isotopic Labeling Reveals Microbial Methane Oxidation Coupled to Fe(III) Mineral Reduction in Sediments from an As-Contaminated Aquifer. Environmental Science & Technology Letters.

Schad, M., Halama, M., Jakus, N., Robbins, L.J., Warchola, T.J., Tejada, J., Kirchhof, R., Lalonde, S.V., Swanner, E.D., Planavsky, N.J., Thorwarth, H., Mansor, M., Konhauser, K.O., Kappler, A. (2021) Phosphate Remobilization from Banded Iron Formations during Metamorphic Mineral Transformations. Chemical Geology 584, 120489.

Yan, Y., Wan, B., Mansor, M., Wang, X., Zhang, Q., Kappler, A., & Feng, X. (2021) Co-sorption of metal ions and inorganic anions/organic ligands on environmental materials: A review. Science of The Total Environment, 149918.

Dopffel, N., Jamieson, J., Bryce, C., Joshi, P., Mansor, M., Siade, A., Prommer, H., Kappler, A. (2021) Temperature dependence of nitrate-reducing Fe(II) oxidation by Acidovorax strain BoFeN1 - evaluating the role of enzymatic vs. abiotic Fe(II) oxidation by nitrite. FEMS Microbiology Ecology, 97, fiab155.

Mansor, M. & Xu, J. (2020) “Benefits at the nanoscale: a review of nanoparticle‐enabled processes favouring microbial growth and functionality.” Environmental Microbiology. https://doi.org/10.1111/1462-2920.15174

Mansor, M., Cantando, E., Wang, Y., Hernandez-Viezcas, J., Gardea-Torresdey, J., Hochella Jr., M.F. & Xu, J. (2020) “Insights into the biogeochemical cycling of cobalt: Precipitation and transformation of cobalt sulfide nanoparticles under low-temperature aqueous conditions.” Environmental Science & Technology, 54(9), 5598-5607. https://doi.org/10.1021/acs.est.0c01363

Mansor, M., Winkler, C., Hochella Jr., M.F. & Xu, J. (2019). “Nanoparticulate nickel-hosting phases in sulfidic environments: Effects of ferrous iron and bacterial presence on mineral formation mechanism and solid-phase nickel distribution.” Frontiers in Earth Science – Earth and Planetary Materials, 7, 151.

Mansor, M. & Fantle, M.S. (2019) “A novel framework for interpreting the pyrite-based Fe isotope records of the past.” Geochimica et Cosmochimica Acta, 253, 39-62.

Mansor, M., Berti, D., Hochella, M., Murayama, M. & Xu, J. (2019) “Phase, morphology, elemental composition and formation mechanisms of biogenic and abiogenic Fe-Cu-sulfide nanoparticles: A comparative study on their occurrences under anoxic conditions.” American Mineralogist, 104(5), 703-717.

Mansor, M., Harouaka, K., Gonzales, M.S., Macalady, J.L. & Fantle, M.S. (2018). “Transport-induced spatial patterns of sulfur isotopes (δ³⁴S) as biosignatures.” Astrobiology, 18(1), 59-72.

Mansor, M. & Macalady, J.L. (2016). “Draft genome sequence of lampenflora Chlorobium limicola strain Frasassi in a sulfidic cave system.” Genome Announcements, 4(3), e00357-16.

Harouaka, K., Mansor, M., Macalady, J.L. & Fantle, M.S. (2016). “Calcium isotopic fractionation in microbially mediated gypsum precipitates.” Geochimica et Cosmochimica Acta, 184, 114-131.

Mansor, M., Hamilton, T.L., Fantle, M.S. & Macalady, J.L. (2015). “Metabolic diversity and ecological niches of Achromatium populations revealed with single-cell genomic sequencing.” Frontiers in Microbiology, 6.