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    Prospective Mechanisms of Pyrite Oxidation in Anoxygenic Environments Analyzed by the Ferrozine Assay

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    Date
    2017-05-03
    Author
    Young, Cooper Alec
    Hanna, Merna
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    Abstract
    Pyrite survived extensive redox weathering in the Archean (4.0-2.5 Ga) due to lack of readily available atmospheric oxygen in coastal, shallow-water environments. However, instances of oxidized detrital pyrite are still found that date as far back as 3.22 Ga. Three hypotheses have been proposed to explain oxidation of pyrite in the Paleoarchean (3.6-3.2 Ga): (1) Oxygenic photosynthesis, (2) Anoxygenic phototrophy, and (3) Photooxidation. Each of these three hypotheses provide ample, yet debatable amount of evidence to support pyrite oxidation. In this research, we investigated prospective oxidation mechanisms of pyrite in the Paleoarchean Era utilizing the ferrozine assay. It was determined that it is possible to quantify the amount of pyrite oxidized in an anoxygenic environment utilizing the ferrozine assay.
    URI
    https://hdl.handle.net/1969.1/188544
    Subject
    Pyrite
    photooxidation
    anoxygenic oxidation
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    • Undergraduate Research Scholars Capstone (2006–present)
    Citation
    Young, Cooper Alec; Hanna, Merna (2018). Prospective Mechanisms of Pyrite Oxidation in Anoxygenic Environments Analyzed by the Ferrozine Assay. Undergraduate Research Scholars Program. Available electronically from https : / /hdl .handle .net /1969 .1 /188544.

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