FIB preparation of a surface

Mineral surfaces

FIB preparation of a surface
Image: Dr. Kilian Pollok

Mineral surfaces are places of chemical exchange between different reservoirs (Earth's crust and mantle, oceans, atmosphere). The interaction of (mostly aqueous) solutions or gases with minerals includes elementary reactions like dissolution and growth, adsorption and ion exchange. They are of central importance for a number of geological but also technical processes.

Selected publications

Harries, D. (2019). Interface Processes and Anomalous Oxygen Transport in Rapid Metal Oxidation and Magnetite Formation at Protoplanetary Conditions. Acs Earth and Space Chemistry, 3(10), 2207-2224. https://doi.org/10.1021/acsearthspacechem.9b00081External link

Barth, M. I. F., Harries, D., Langenhorst, F., & Hoppe, P. (2018). Sulfide-oxide assemblages in Acfer 094Clues to nebular metal-gas interactions. Meteoritics & Planetary Science, 53(2), 187-203. https://doi.org/10.1111/maps.12992External link

Harries D., Pollok K., and 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.

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.2011.12.014External link