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TZUNTIL:20241027T010000Z
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DTSTART:20221030T030000
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RDATE:20231029T030000
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DTSTAMP:20260829T222735Z
DESCRIPTION:Microbe-mineral interactions affect the biogeochemical cycling 
 of various elements (Fe\, S\, C\, N\, P\, trace metals\, nutrients\, conta
 minants)\, the evolution of life\, and the preservation of minerals that h
 old clues to conditions on Earth&rsquo\;s past and potentially in other ha
 bitable worlds. The mineral pyrite (FeS2) in particular is prevalent in na
 ture due to the activity of Fe- and S-cycling microbes\, making them promi
 sing for applications in the field of biosignatures and environmental reme
 diation. However\, decades of research with microbial cultures have reveal
 ed difficulties in forming pyrite in the lab\, despite biogenic pyrite bei
 ng formed everyday in sedimentary environments on Earth. In this talk\, I 
 will present recent advances in microbially-mediated formation of pyrite a
 nd its Fe sulfide precursors (mackinawite\, greigite). The role of differe
 nt microbes and interrelated Fe-S chemistry in impacting pyrite formation 
 will be discussed. Recent advances highlight the need to develop systems t
 hat better reflect the complexity of natural environments to form pyrite w
 ith properties that are relevant for environmental and geological research
 . \n&nbsp\;\n*** invited by Stefan Peiffer\, Hydrology
DTSTART;TZID=Europe/Berlin:20221208T000000
DTEND;TZID=Europe/Berlin:20221208T235959
SUMMARY:Dr. Muammar Mansor\, Center for Applied Geoscience Geomicrobiology\
 , Eberhard Karls Universität Tübingen (Homepage): Microbial-mineral intera
 ctions: Formation of pyrite and implications for biosignature and environm
 ental research
TRANSP:TRANSPARENT
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