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• W4244178400 abstract "Other| December 01, 1998 Microbial oxidation of pyrite; experiments using microorganisms from an extreme acidic environment Katrina J. Edwards; Katrina J. Edwards University of Wisconsin-Madison, Department of Geology and Geophysics, Madison, WI, United States Search for other works by this author on: GSW Google Scholar Matthew O. Schrenk; Matthew O. Schrenk Search for other works by this author on: GSW Google Scholar Robert Hamers; Robert Hamers Search for other works by this author on: GSW Google Scholar Jillian F. Banfield Jillian F. Banfield Search for other works by this author on: GSW Google Scholar Author and Article Information Katrina J. Edwards University of Wisconsin-Madison, Department of Geology and Geophysics, Madison, WI, United States Matthew O. Schrenk Robert Hamers Jillian F. Banfield Publisher: Mineralogical Society of America First Online: 02 Mar 2017 Online Issn: 1945-3027 Print Issn: 0003-004X GeoRef, Copyright 2004, American Geological Institute. American Mineralogist (1998) 83 (11-12_Part_2): 1444–1453. https://doi.org/10.2138/am-1998-11-1233 Article history First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Katrina J. Edwards, Matthew O. Schrenk, Robert Hamers, Jillian F. Banfield; Microbial oxidation of pyrite; experiments using microorganisms from an extreme acidic environment. American Mineralogist 1998;; 83 (11-12_Part_2): 1444–1453. doi: https://doi.org/10.2138/am-1998-11-1233 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyAmerican Mineralogist Search Advanced Search Abstract Surface colonization and microbial dissolution of pyrite were studied in the laboratory and by in situ surface colonization experiments conducted at Iron Mountain, California. Laboratory experiments involved organisms obtained from Iron Mountain and cultured in pH<1.0, 42 degrees C solutions designed to enrich for chemolithotrophic species present at acid-generating sites. Planktonic and sessile microorganisms grew in enrichment cultures containing small amounts of yeast extract. The maximum density of attached cells was approximately 8X10 6 cells/cm (super ) . Attachment was specific for pyrite and occurred nonrandomly; rod-shaped bacteria tended to orient parallel to {100} and {110} pyrite. Attachment resulted in formation of euhedral dissolution pits. Cultures grown without yeast extract contained only planktonic cells and euhedral dissolution pits were not developed on the pyrite surface. All cultured organisms were identified as bacteria by fluorescence in situ hybridization and domain-specific probes. Leptospirillum ferrooxidans comprised 10-40% of planktonic organisms in both enrichments. Thiobacillus ferrooxidans was not identified in either enrichment. Oxidation rates were approximately equivalent in both enrichments (4 X 10 (super -7) mu M Fe/cell.day) over a 28 day period. Pyrite cubes were exposed to natural solutions at Iron Mountain for two months. A subset of samples was exposed only to solutions that had passed through 0.22 mu m Teflon filters. Denser colonization (by distinctive elongate bacteria not observed in laboratory cultures) occurred on pyrite in filter-covered vessels. Attachment specificity, orientation, and resulting degradation morphology were similar to that observed in laboratory cultures. Results show that interaction between attached cells and pyrite surface is highly specific and the impact on surface morphology evolution is different from that associated with planktonic microorganisms, despite the similarity in effect (per cell) on total dissolution rates. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access." @default.
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• W4244178400 title "Microbial oxidation of pyrite; experiments using microorganisms from an extreme acidic environment" @default.
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