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Figure 3
(a), (b) Reconstructed absorption (left) and phase (right) images of CaSO4·2H2O particles at 4.0932 keV [(a), near the Ca K edge] and 2.500 keV [(b), near the S K edge]. (c) Spatially resolved X-ray absorption spectra at the Ca K edge (top) and S K edge (bottom), extracted from positions 1, 2 and 3 in the absorption images.

IUCrJ
Volume 13| Part 1| January 2026| Pages 11-18
ISSN: 2052-2525
https://doi.org/10.1107/S2052252525009236