Fig. 2: Morphological, textural, and elemental image of Capelinhos (CAP A) mat. | Communications Earth & Environment

Fig. 2: Morphological, textural, and elemental image of Capelinhos (CAP A) mat.

From: Iron-rich microband formation in marine sediments by hydrothermal iron cycling bacteria at Lucky Strike−

Fig. 2

a Brown to orange Fe(II)-oxidizing microbial mats. b Thin section. The Fe mineralogy exclusively consists of ferrihydrite (Fh), as demonstrated by XRD results of our study. c, d Transmitted light photomicrographs (plane-polarized light). Filamentous microbial structures. e–h SEM images in BSE mode showing the aggregation of a large number of filaments (mainly stalks here). Filaments crossing with each other to form a mesh structure. i EDS analysis of stalks displaying a predominantly Fe- and Si-rich composition.

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