Goethite
Gualtieri A, Venturelli P
American Mineralogist 84 (1999) 895-904
In situ study of the goethite-hematite phase transformation by real time
synchrotron powder diffraction
Sample at T = 156 C
_database_code_amcsd 0002227
9.9189 3.0148 4.5835 90 90 90 Pnma
atom      x   y      z Uiso
Fe    .1459 .25 -.0489 .048
H     -.105 .25  -.411  .06
O1   -.1994 .25   .286 .050
O2   -.0499 .25  -.209 .050