Hercynite
Andreozzi G B, Lucchesi S
American Mineralogist 87 (2002) 1113-1120
Intersite distribution of Fe2+ and Mg in the spinel (sensu stricto) -
hercynite series by single-crystal X-ray diffraction
Sample: He100c/a
_database_code_amcsd 0002882
8.1646 8.1646 8.1646 90 90 90 *Fd3m
.125 .125 .125
atom      x      y      z  occ U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
Al       .5     .5     .5 .882  .0050  .0050  .0050  .0000  .0000  .0000
Fe       .5     .5     .5 .118  .0050  .0050  .0050  .0000  .0000  .0000
Al     .125   .125   .125 .133  .0078  .0078  .0078      0      0      0
Fe     .125   .125   .125 .867  .0078  .0078  .0078      0      0      0
O    .26416 .26416 .26416       .0075  .0075  .0075  .0000  .0000  .0000