Three-dimensional pore distribution and phase composition in halite crystals grown from NaCl solutions with 0, 67, and 133 mM glycine, characterized by XCT. Top: isometric views of each full crystal volume, with halite rendered semitransparent (gray) to reveal internal pores. Pores are colored by phase: air/void (tan) and brine (blue). Bottom: scatter plots of individual segmented pores for each crystal, showing pore volume (x-axis) versus distance from the crystal surface (y-axis). Each point represents one segmented pore.