Carbon-containing pyrite spherules: mineral biosignatures in black smokers?
Chloé Truong,
Sylvain Bernard,
François Baudin
et al.
Abstract:Abstract. Sulfide- and sulfate-rich hydrothermal vents are involved in Earth's major geochemical cycles. An outstanding scientific question consists of finding out whether certain minerals found in hydrothermal chimneys are influenced more or less directly by microorganisms living at high temperatures (thermophiles or hyperthermophiles) in these environments. Here we report the morphological, textural and chemical characterization of pyrite crystals collected across a section of a chimney from the Trans-Atlant… Show more
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