Fachbereich 14 - Geowissenschaften
Institut für Mineralogie
Allgemeine und Angewandte Mineralogie

Mineral Surface Science

Mineral Surface Science, which broadly covers the fields of crystal growth and dissolution processes and the role of organic and inorganic additives. We have two atomic force microscopes equipped to study these processes in situ in fluid cells, as well as carrying out macroscopic growth and dissolution experiments.

Crystal growth processes in rocks are being studied with a number if issues in mind: The role of porosity in defining the threshold supersaturation of fluids in rocks. Crystal growth under high supersaturation The mechanism of mineral replacement reactions. Dissolution-reprecipitation. Non-linear phenomena associated with crystal growth. Oscillatory zoning. Microstructures associated with crystal growth processes Computational and experimental study of the interaction between organic molecules and mineral surfaces is part of the Special Research Area (Sonderforschungsbereich SFB 424) "Molekulare Orientierung als Funktionskriterium in chemischen Systemen"

Drittmittelgeber:

Deutsche Forschungsgemeinschaft, Alexander-von-Humboldt-Stiftung, Europäische Gemeinschaft

Beteiligte Wissenschaftler:

Dr. Jose Manuel Astilleros, Dr. Udo Becker, Dr. Dirk Bosbach, Dr. Carlos Pina, Kilian Pollok, Christine Putnis, Peter Risthaus, Ingo Sethmann, Prof. M.Hochella, Prof. Andrew Putnis

Veröffentlichungen:

Putnis A. and Mauthe G. The effect of pore size on cementation in porous rocks. Geofluids 1, 37-41 (2001)

Bickmore B.R., Bosbach D., Hochella M.F., Charlet L. and Rufe E. In situ atomic force microscopy study of hectorite and nontronite dissolution: Implications for phyllosilicate edge surface structures and dissolution mechanisms. American Mineralogist 86, 411-423 (2001)

Risthaus P., Bosbach D., Becker U. and Putnis A. Barite scale formation and dissolution at high ionic strength studied with Atomic Force Microscopy Colloids and Surfaces A: Physicochemical and Engineering Aspects. 191/3, 201 - 214 (2001)

Becker U., Rosso K. and Hochella M.F. Jr. The proximity effect on semiconducting mineral surfaces: A new aspect of mineral surface reactivity and surface complexation theory? Geochimica et Cosmochimica Acta, 65, 2641-2649 (2001)

Becker U. and Rosso K. Step edges on galena (100): Probing the basis for defect driven surface reactivity at the atomic scale. American Mineralogist, 86, 862-870 (2001)

Becker U. and Gasharova B. AFM observations and simulations of jarosite growth at the molecular scale: probing the basis for the incorporation of foreign ions into jarosite as a storage mineral. Physics and Chemistry of Minerals, 28, 545-556 (2001)

Pina C.M. and Putnis A. The kinetics of nucleation of solid solutions from aqueous solutions: A new model for calculating non-equilibrium distribution coefficients. Geochimica Cosmochimica Acta 66, 185-192 (2002)

Becker U., Risthaus P., Bosbach D. and Putnis A. Selective attachment of monovalent background electrolyte ions and growth inhibitors to polar steps on sulfates as studied by molecular simulations and AFM observations. Molecular Simulation 28, 607-632 (2002)

Kostenko, O., Jamtveit, B., Austrheim, H., Pollok K. and Putnis C. The mechanism of fluid infiltration in peridotites at Almklovdalen, western Norway. Geofluids, 2, 1-13 (2002)

Bosbach D., Coveney P.V., Griffin J.W.L., Putnis A., Risthaus P., Stackhouse S and Whiting A. The rational design, synthesis and demonstration of the recognition and binding of a diaza-dioxa-12-crown-4 diphosphonate macrocycle to all crystal growth faces of barium sulfate. J. Chem. Soc., Perkin Trans. 2, 1238-1245 (2002)

Putnis A. Mineral replacement reactions : from macroscopic observations to microscopic mechanisms. Mineral. Mag. 66, 689-708 (2002)

Astilleros J.M., Pina C.M. Férnandez-Diaz L. and Putnis A. Molecular scale surface processes during the growth of calcite in the presence of manganese. Geochimica Cosmochimica Acta 66, 3177-3189 (2002)

Fernandez-Diaz L., Astilleros J.M. and Pina C.M. Application of atomic force microscopy to the study of crystallisation of solid solutions from aqueous solutions. Bol. R. Soc. Esp. Hist. Nat (Sec. Geol.), 97, 67-82 (2002)