Etzel, Katja and Huber, Harald and Rachel, Reinhard and Schmalz, Gottfried and Thomm, Michael and Depmeier, Wulf (2007) Pyrite surface alteration of synthetic single crystals as effect of microbial activity and crystallographic orientation. Advanced materials research 20/21, pp. 350-353.
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To enhance our understanding of effects of microbially mediated pyrite dissolution and the influence parameters such as varied metabolism and crystallographic orientation of pyrite surfaces
some dissolution experiments were performed. Microbial etching experiments on pyrite surfaces of different orientation, including and were devised. The experiments were performed using two strains of thermophilic Archaea (Sulfolobus metallicus, Metallosphaera sedula).
Epifluorescence microscopy observations showed that the strains attach to the mineral surface. Studies with Scanning Electron Microscopy (SEM) showed cell attachment and etching effects after one week of incubation. Surface alteration produced structures following crystallographic
orientation up to several 10 μm in size. For all incubated pyrite samples it became apparent that surface alteration was more pronounced with M. sedula than with S. metallicus.
|Institutions:||Biology, Preclinical Medicine > Institut für Biochemie, Genetik und Mikrobiologie > Lehrstuhl für Mikrobiologie > Prof. Dr. Michael Thomm|
|Subjects:||500 Science > 570 Life sciences|
|Created at the University of Regensburg:||Unknown|
|Deposited On:||24 Mar 2010 10:26|
|Last Modified:||24 Mar 2010 10:26|