Hematite-proto
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 = 779 C
_database_code_amcsd 0002230
5.041 5.041 13.7251 90 90 120 R-3c
atom     x    y     z occ Uiso
Fe       0    0 .3550 .95 .067
H    -.117 .324 -.143 .01  .08
O     .313    0   .25     .068