NAI
Huifang Xu
University of Wisconsin, Madison
Current Projects
- Developing Methods for Life Detection on Mars and in Mars Analog Environments — 2016 NAI
- Project 2C: Investigation of the Role of Polysaccharide in the Dolomite Growth at Low Temperature by Using Atomistic Simulations — 2015 NAI
- Project 1F: Study of Modern Fe-Mn Nodules in Green Bay Sediments as Analog to the Fe-Nodules and Fe-Oxyhydroxide Minerals on Mars — 2015 NAI
- Project 2D: Magnesium Isotopes in Carbonates as a Tracer of Marine Conditions in the Early Earth — 2014 NAI
- Project 2A: The Catalysis Effect of Extracellular Polymeric Substances Excreted by Fermentative Bacteria on Ca-Mg Carbonate Precipitation — 2014 NAI
- Project 2B: Modeling the Role of Adsorbed Hydrogen Sulfide in Weakening Mg-Water Complex on Dolomite (104) Surface — 2014 NAI
- Project 2C: Calibrating the [^13^]C-[^18^]O (“clumped”) Isotope Temperature Scale — 2013 NAI
- Project 1C: Compositional and Structural Variations in Dolomite and Ca-Bearing Magnesite From Modern and Ancient Carbonate Sediments — 2013 NAI
- Project 2D: Catalytic Roles of Microbes in Dolomite Crystallization in a Modern Hypersaline Lake — 2013 NAI
- Project 2E: Preferential Dolomitization of Carbonate Microbialites From a Modern Hypersaline Lake and in Ancient Dolomite — 2012 NAI
- Project 2C: Roles of EPS Excreted From Anaerobic Microorganism in Governing Dolomite Composition and Crystallization — 2012 NAI
- Project 2D: Catalytic Role of Adsorbed Hydrogen Sulfide in Dolomite Crystallization: Density Functional Theory Study — 2012 NAI
- Project 3A: Stable Isotope and Mineralogical Studies of Banded Iron Formations - O Isotopes by SIMS — 2012 NAI
- Project 5F: Roles of Extracellular Polysaccharides From Sulfate-Reducing Bacteria in Governing Dolomite Composition and Crystallization — 2011 NAI
- Project 7C: Improving Accuracy of in Situ Stable Isotope Analysis by SIMS — 2011 NAI
- Project 5E: Disordered Dolomite Crystallization From Media Containing Agar Gel and Halophilic Bacteria — 2011 NAI
- Project 5C: Growth of Ca-Mg Carbonates in the Presence of Dissolved Hydrogen Sulfide - in Situ and AFM Studies — 2011 NAI
- Project 3A: Stable Isotope and Mineralogical Studies of Banded Iron Formations - O and Si Isotopes by SIMS — 2011 NAI
- Project 2D: Establishing Biogenicity and Environmental Setting of Precambrian Kerogen and Microfossils — 2011 NAI
- Project 3D: Stable Isotope and Mineralogical Studies of Banded Iron Formations: O & Si Isotopes by SIMS — 2010 NAI
- Project 1D: Dolomite Precipitation From Solutions Containing Agar or Carboxymethyl Cellulose, Synthetic Analogs for Extracellular Polymeric Substances (EPS) — 2010 NAI
- Project 2D: Tectonic Hydrogen Production Through Piezoelectrochemical Effect, a New Mechanism for the Direct Conversion of Mechanical Energy to Chemical Energy by Deforming Piezoelectric Minerals in Water — 2010 NAI
- Project 4A: Improving Accuracy of in Situ Stable Isotope Analysis by SIMS — 2010 NAI
- Project 3C: Iron Isotope Biosignatures: Laboratory Studies and Modern Environments — 2010 NAI
- Co-Evolution of Microbial Metabolisms in the Neoarchean and Paleoproterozoic — 2009 NAI
- Chemolithotrophic Microbial Oxidation of Insoluble Fe(II)-Bearing Minerals — 2009 NAI
- Alternative Formation Mechanisms for Banded Iron Formations — 2009 NAI
- The Role of Dissolved Sulfide in Controlling Carbonate Mineral Compositions — 2009 NAI
- Iron Isotope Biosignatures: Laboratory Studies and Modern Environments — 2009 NAI
- New Frontiers in Micro-Analysis of Isotopic Compositions of Natural Materials: Development of O, S, Si, and Li Isotopes — 2009 NAI
- Production of Mixed Cation Carbonates in Abiologic and Biologic Systems — 2009 NAI
- Production of Mixed Cation Carbonates in Abiologic and Biologic Systems — 2008 NAI
- Biogenic Formation of High-Magnesium Calcite in Sulfide-Rich Systems — 2008 NAI
- Iron Isotope Biosignatures: Laboratory Studies and Modern Environments — 2008 NAI
- Nano-Structured Minerals as Tracers of Microbial Activities — 2008 NAI
- Planetary-Scale Transition From Abiotic to Biotic Nitrogen Cycle — 2008 NAI
- View all 36 projects
NAI Project Collaborators
- Project collaborators as reported by the latest NAI Annual Report.
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Catherine Woodward
Institute for Biology Education - Mazomanie Outreach Outpost
Collaborated on 1 Project
Publications
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Hong, K-S., Xu, H., Konishi, H., & Li, X. (2010). Direct Water Splitting Through Vibrating Piezoelectric Microfibers in Water. The Journal of Physical Chemistry Letters, 1(6), 997–1002. doi:10.1021/jz100027t
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Huberty, J. M., Konishi, H., Heck, P. R., Fournelle, J. H., Valley, J. W., & Xu, H. (2012). Silician magnetite from the Dales Gorge Member of the Brockman Iron Formation, Hamersley Group, Western Australia. American Mineralogist, 97(1), 26–37. doi:10.2138/am.2012.3864
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Konishi, H., & Xu, H. (2012). Nanostructures of Natural Iron Oxide Nanoparticles. Nature’s Nanostructures, None, 75–114. doi:10.1201/b11618-5
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Percak-Dennett, E. M., Beard, B. L., Xu, H., Konishi, H., Johnson, C. M., & Roden, E. E. (2011). Iron isotope fractionation during microbial dissimilatory iron oxide reduction in simulated Archaean seawater. Geobiology, 9(3), 205–220. doi:10.1111/j.1472-4669.2011.00277.x
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Roden, E. E., Kappler, A., Bauer, I., Jiang, J., Paul, A., Stoesser, R., … Xu, H. (2010). Extracellular electron transfer through microbial reduction of solid-phase humic substances. Nature Geosci, 3(6), 417–421. doi:10.1038/ngeo870
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Shelobolina, E., Xu, H., Konishi, H., Kukkadapu, R., Wu, T., Blothe, M., & Roden, E. (2012). Microbial Lithotrophic Oxidation of Structural Fe(II) in Biotite. Applied and Environmental Microbiology, 78(16), 5746–5752. doi:10.1128/aem.01034-12
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Shen, Z., Konishi, H., Brown, P. E., & Xu, H. (2013). STEM investigation of exsolution lamellae and “c” reflections in Ca-rich dolomite from the Platteville Formation, western Wisconsin. American Mineralogist, 98(4), 760–766. doi:10.2138/am.2013.4184
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Wang, Y., Xu, H., Merino, E., & Konishi, H. (2009). Generation of banded iron formations by internal dynamics and leaching of oceanic crust. Nature Geosci, 2(11), 781–784. doi:10.1038/ngeo652
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Xu, H. (2010). Synergistic Roles of Microorganisms in Mineral Precipitates Associated with Deep Sea Methane Seeps. Geomicrobiology: Molecular and Environmental Perspective, None, 325–346. doi:10.1007/978-90-481-9204-5_15
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Xu, H., Chen, T., & Konishi, H. (2010). HRTEM investigation of trilling todorokite and nano-phase Mn-oxides in manganese dendrites. American Mineralogist, 95(4), 556–562. doi:10.2138/am.2010.3211
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Zhang, F., Xu, H., Konishi, H., & Roden, E. E. (2010). A relationship between d104 value and composition in the calcite-disordered dolomite solid-solution series. American Mineralogist, 95(11-12), 1650–1656. doi:10.2138/am.2010.3414
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Zhang, F., Xu, H., Konishi, H., Kemp, J. M., Roden, E. E., & Shen, Z. (2012). Dissolved sulfide-catalyzed precipitation of disordered dolomite: Implications for the formation mechanism of sedimentary dolomite. Geochimica et Cosmochimica Acta, 97, 148–165. doi:10.1016/j.gca.2012.09.008
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Zhang, F., Xu, H., Konishi, H., Shelobolina, E. S., & Roden, E. E. (2012). Polysaccharide-catalyzed nucleation and growth of disordered dolomite: A potential precursor of sedimentary dolomite. American Mineralogist, 97(4), 556–567. doi:10.2138/am.2012.3979
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Zhang, F., Yan, C., Teng, H. H., Roden, E. E., & Xu, H. (2013). In situ AFM observations of Ca–Mg carbonate crystallization catalyzed by dissolved sulfide: Implications for sedimentary dolomite formation. Geochimica et Cosmochimica Acta, 105, 44–55. doi:10.1016/j.gca.2012.11.010
See Project See Project - Huberty, J.M., Kita, N.T., Heck, P.R., Kozdon, R., Fournelle, J.H., Xu, H. & Valley, J.W. (2010c). In situ δ18O analyses in quartz and magnetite from the Dales Gorge BIF. 5th International Archean Symposium. See Project
- Shen, Z., Liu, Y., Zhang, F., Kemp, J., Szlufarska, I. & Xu, H. (2011). Modeling the effect of dissolved hydrogen sulfide on Mg2+-water complex on dolomite {104} surface. Annual Meeting of the Geological Society of America. Minneapolis. See Project
- Xu, H. (2010). Dolomite, dolomitization and dolomite problem: a new song with old tune. [Goldschmidt Conference]. Geochimica et Cosmochimica Acta, 73(A): A1160. See Project
- Xu, H. (2010). Synergistic roles of microorganisms in mineral precipitates associated with deep sea methane seeps. In: Barton, L.L., Mandl, M. & Loy, A. (Eds.). Geomicrobiology: Molecular and Environmental Perspective. Springer. See Project
- Xu, H. (2010). Synergistic roles of microorganisms in mineral precipitates associated with deep sea methane seeps. In: Larry L. Barton, M.M.a.A.L. (Eds.). Geomicrobiology: Molecular and Environmental Perspective. Springer. See Project
- Xu, H., Wang, Y. & Konishi, H. (2010). The role komatiite in governing banded ironformations in the early earth. Fifth International Archean Symposium Abstracts. Geological Survey of Western Australia. See Project
- Zhang, F., Xu, H., Konishi, H. & Roden, E.E. (2009). A relationship between d-104 value and composition in the calcite – disordered dolomite solid solution series. Annual Meeting Geological Society of America. Portland, Oregon. See Project
- Zhang, F., Xu, H., Konishi, H. & Roden, E.E. (2010, In Review). Sulfide-catalyzed nucleation and growth of very high-magnesian calcite and disordered dolomite, precursors to sedimentary dolomite. Earth and Planetary Science Letters. See Project
- Zhang, F., Xu, H., Konishi, H., Shelobolina, E.S. & Roden, E.E. (2010). Abiotic synthesis of disordered dolomite in agar gel medium. [Goldschmidt Conference]. Geochimica et Cosmochimica Acta, A: A1203. See Project
- Zhang, F., Xu, H., Konishi, H., Yan, C., Teng, H. & Roden, E.E. (2011). Aqueous sulfide-catalyzed nucleation and growth of disordered dolomite at room temperature. Annual Meeting of the Geological Society of America. Minneapolis. See Project
- View all 24 publications
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Phone:
608-265-5887 -
Email:
hfxu@geology.wisc.edu
Past NAI Teams
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SETI Institute
CAN 3 -
University of Wisconsin
CAN 6 -
University of Wisconsin
CAN 4