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June 26, 2026Geo-Bio InterfacesOpen Access

Photoferrotrophy forms Fe(III) oxides dominated by acicular goethite in an anoxic, siderite-buffered system

Alice Zhou Benjamin Klein Jena E. Johnson

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Key Points

This research aims to explore the formation of Fe(III) oxides, specifically acicular goethite, through photoferrotrophy in an anoxic environment.
Investigated photoferrotrophy under controlled anoxic conditions
Analyzed the mineral composition and morphology of Fe(III) oxides
Examined the role of siderite buffering in the process
Identified acicular goethite as the dominant mineral formed
Demonstrated that siderite buffering enhances Fe(III) oxide precipitation
Revealed potential implications for biogeochemical iron cycling in anoxic environments

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Implication

Photoferrotrophy produces Fe(III) oxides in anoxic systems, suggesting biogeochemical implications for iron cycling.

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Cite This Study

Zhou et al. (2026) studied this question.

synapsesocial.com/papers/6a40b8ed61bb0a67205c574d https://doi.org/10.1180/gbi.2026.10009

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