Figure 2
From: Engineered mineralogical interfaces as radionuclide repositories

(a) Evolution of X-Ray diffraction signal during amorphization and subsequent phase transformation of hydrotalcite as a function of temperature (20–1320 °C). HT hydrotalcite, de-HT dehydrated hydrotalcite, Pe périclase, Sp spinel, Mt monticellite. Pt represents the platinum heating strip within the experimental cell. (b) EBSD phase map confirming the mineralogy as determined in (a) and showing the distribution and textural relationships among spinel (red), periclase (blue) and monticellite (yellow).