Fig. 1: Morphological and chemical analysis of a carbonate nodule extracted from a depth of 857.1 m (2812 ft) bgs.
From: Complex carbonate phases drive geologic CO2 mineralization
A Schematic illustration of CO2 injection showing a photograph of a recovered core section from Zone 2. Inset: Optical microscope image revealing small-to-medium nodules within pore spaces. B SEM secondary electron image of the cross-sectional surface of an extracted carbonate nodule. The highlighted areas (‘core’ and ‘rim’) represent the regions analyzed by FIB-STEM. C EBSD grain map of the nodule where different colors represent specific crystal orientations. D SEM-EDS line scan, measuring the composition along the white arrow shown in (B).
