GEOCWednesday, March 31, 2004

1:45 PM-6:20 PM Marriott -- Marquis NE, Oral
Microbially Mediated Manganese and Iron Oxidation in the Biosphere
Iron and Manganese Biooxides
Organizers:John R. Bargar
Garrison Sposito
Bradley M. Tebo
Mario Villalobos
1:45 PM 152Surface chemistry of bacteriogenic iron oxides
F. Grant Ferris, R. Martinez, K. Pedersen
2:30 PM 153Biomineralization by Gallionella
Rolf O. Hallberg, F. Grant Ferris
2:50 PM 154Manganese oxide minerals: Structures and behaviors
Jeffrey E. Post, Peter J. Heaney, Christina Lopano
3:25 PM 155Time-resolved X-ray diffraction analysis of cation exchange in Mn oxides
Peter J. Heaney, Jeffrey E. Post, Christina Lopano, Sridhar Komarneni, Jonathan C. Hanson
3:45 PM Intermission
3:55 PM 156Structure determination of highly defective layer Mn oxides: Case study of the biogenic Mn oxide produced by Pseudomonas putida
Bruno Lanson, Alain Manceau, Mario Villalobos, Brandy Toner, Garrison Sposito
4:30 PM 157Reactivity of a bacterial manganese oxide produced within a biofilm
Brandy M Toner, Alain Manceau, Mario Villalobos, Sirine C Fakra, Samuel M. Webb, Matthew M Marcus, John R. Bargar, Bradley M. Tebo, Garrison Sposito
4:50 PM 158Pb(II) reactivity on a biogenic Mn oxide: Evidence of inner-sphere bonding at internal and external sites
Mario Villalobos, Garrison Sposito, J. R. Bargar
5:10 PM 159Metal adsorption to a variety of Mn-oxide phases
Peter G. Wightman, Jean-Francois Gaillard, Ian Saratovsky
5:30 PM Concluding Remarks
6:00 PM Business Meeting/Social Hour

Previous Session -- Microbially Mediated Manganese and Iron Oxidation in the Biosphere

Symposium Grid -- Division of Geochemistry -- Session Listing

The 227th ACS National Meeting, Anaheim, CA, March 28-April 1, 2004