Figure F25. Series of XRD spectra for Sample 209-1272A-23R-1, 67-69 cm, after (A) freeze drying, (B) glycolization, and (C) heating to 370°C. Note that the iowaite peaks at 8.14 and 4.07 Å did not shift after glycolization and that these peaks disappear after heating the sample to 370°C.

Figure F25. Series of XRD spectra for Sample 209-1272A-23R-1, 67-69 cm, after (A) freeze drying, (B) glycolization, and (C) heating to 370°C. Note that the iowaite peaks at 8.14 and 4.07 Å did not shift after glycolization and that these peaks disappear after heating the sample to 370°C.