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 equiped 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, VGB Stiftung, BMBF

Beteiligte Wissenschaftler:

Dr. Udo Becker, Dr. Dirk Bosbach, Felix Brandt, Rikke Ellemann-Olesen, Dr. Carlos Pina, Kilian Pollok, Prof. Andrew Putnis, Bsc. Christine Putnis

Veröffentlichungen:

Fernandez-Gonzales A., Prieto M., Putnis A. and Lopez-Andres S.: Concentric zoning patterns in crystallizing (Cd,Ca)CO3 solid solutions from aqueous solutions. Mineral. Mag. 63, 331-343 (1999)

Putnis A., Becker U. and Bosbach D.: Mineral Surface Science : Principles, applications and recent case studies. In: Microscopic Properties and Processes in Minerals . NATO ASI Series (Eds.: Wright K. and Catlow C.R.A.) Reidel (1999)

Rakovan J., Becker U., and Hochella M.F. Jr.: Aspects of goethite surface microtopography, structure, chemistry and reactivity. American Mineral., 84, 884-894 (1999)

Rosso K.M., Becker U. and Hochella M.F. Jr.: Atomically resolved electronic structure of pyrite {100} surfaces : An experimental and theoretical investigation and implications for reactivity. American Mineral., 84, 1535 - 1548 (1999)

Rosso K.M., Becker U. and Hochella M.F. Jr.: The interaction of pyrite {100} surfaces with O2 and H2O : Fundamental oxidation mechanisms. American Mineral., 84, 1549 - 1561 (1999)

Pina C.M., Fernández-Díaz L., Prieto M. and Putnis A.: In situ AFM observations of a dissolution-reprecipitation reaction: the phosgenite-cerussite transformation. Geochim. Cosmochim. Acta 64, 215-221 (2000)

Becker U., Fernández-Gonzáles A., Prieto M., Harrison R. and Putnis A.: Direct calculation of the thermodynamic properties of the barite-celestite solid solution from molecular principles. Physics and Chemistry of Minerals 27, 291-300 (2000)

Prieto M., Fernández-González A., Becker U and Putnis A.: Computing Lippmann diagrams from direct calculation of mixing properties of solid solutions : application to the barite-celestite system. . Aquatic Geochemistry, 6, 133-146 (2000)

Pina C.M., Enders M. and Putnis A.: The composition of solid solutions crystallising from aqueous solutions : the influence of supersaturation and growth mechanisms. Chemical Geology. 168, 195-210 (2000)

Astilleros J.M., Pina C.M. Férnandez-Diaz L. and Putnis A.: The effect of barium on calcite {1014} surfaces during growth. Geochim. Cosmochim. Acta. 64, 2965-2972 (2000)

Shen Z., Bosbach D., Hochella M.F. Jr., Bish D.L., Williams M.G., Jr., Dodson R.F. & A.E. Aust: Using in Vitro Iron Deposition on Asbestos to Model Asbestos Body Formation in Human Lung. Chemical Research in Toxicology, 13, 913-921 (2000)

Bosbach D., Charlet L., Bickmore B. and Hochella M.F.: The dissolution of hectorite: In situ, real time observations using atomic force microscopy. American Mineralogist 85, 1209-1216 (2000)

Rosso K.M., Becker U. and Hochella M.F., Jr.: Surface defects and self-diffusion on pyrite {100} using ultra-high vacuum scanning tunneling microscopy and theoretical modeling. American Mineralogist, 85, 1428-1436 (2000)