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Figure 4
Time evolution of calcium sulfate reactants and products through a gradual temperature increase during a triaxial deformation experiment at the TOMCAT beamline (SLS). 2D slices show the progressive transformation of gypsum (dark grey) (a) to gypsum + bassanite (light grey) (b), bassanite (c) and anhydrite (light grey) (d). The dark moats surrounding bassanite and anhydrite needles are fluid-filled porosity. The bright unreactive phase is celestite. Tomography volumes were acquired with a sample–detector distance of 2500 mm. The scale bar at the bottom left of the image is 1 mm long.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 31| Part 1| January 2024| Pages 150-161
https://doi.org/10.1107/S1600577523009876
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