Articles | Volume 36, issue 5
https://doi.org/10.5194/ejm-36-813-2024
https://doi.org/10.5194/ejm-36-813-2024
Research article
 | 
18 Sep 2024
Research article |  | 18 Sep 2024

Carbon-containing pyrite spherules: mineral biosignatures in black smokers?

Chloé Truong, Sylvain Bernard, François Baudin, Aurore Gorlas, and François Guyot

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Cited articles

Amend, J. P., McCollom, T. M., Hentscher, M., and Bach, W.: Catabolic and anabolic energy for chemolithoautotrophs in deep-sea hydrothermal systems hosted in different rock types, Geochim. Cosmochim. Ac., 75, 5736–5748, https://doi.org/10.1016/j.gca.2011.07.041, 2011. 
Baumgartner, R. J., Hu, S., Van Kranendonk, M. J., and Verrall, M.: Taphonomy of microorganisms and microbial microtextures at sulfidic hydrothermal vents: A case study from the Roman Ruins black smokers, Eastern Manus Basin, Geobiology, 20, 479–497, https://doi.org/10.1111/gbi.12490, 2022. 
Baumgartner, R. J., Teece, B. L., Rasmussen, B., Muhling, J., Rickard, W. D., Pejcic, B., Hu, S., Bourdet, J., Caruso, S., Van Kranendonk, M. J., and Grice, K.: Exceptional preservation of organic matter and iron-organic colloidal mineralization in hydrothermal black smoker-type sulfide mineralization from the Paleoarchean seafloor, Chem. Geol., 618, 121296, https://doi.org/10.1016/j.chemgeo.2022.121296, 2023. 
Beaulieu, S. E., Baker, E. T., and German, C. R.: Where are the undiscovered hydrothermal vents on oceanic spreading ridges?, Deep-Sea Res. Pt. II, 121, 202–212, https://doi.org/10.1016/j.dsr2.2015.05.001, 2015. 
Becker, K.: Pre-drilling observations of conductive heat flow at the TAG active mound using DSV Alvin, Proc. ODP. Init. Repts, 158, 23–29, 1996. 
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Short summary
Known as black smokers, sulfur-rich hydrothermal vents expel hot metal-rich water (~ 400°C). These extreme environments host micro-organisms capable of living at over 100°C. But to date, we do not know whether these microorganisms influence the formation of hydrothermal vents. The comparative study of minerals along the chimney wall is an essential step in determining whether microorganisms may have colonized and influenced mineral formation in certain parts of the chimney.