Akermanite
Swainson I P, Dove M T, Schmahl W W, Putnis A
Physics and Chemistry of Minerals 19 (1992) 185-195
Neutron powder diffraction study of the akermanite-gehlenite
solid solution series
Sample: 75% Ak
_database_code_amcsd 0007697
7.7853 7.7853 5.0211 90 90 90 P-42_1m
atom     x     y     z occ B(1,1) B(2,2)  B(3,3)  B(1,2)  B(1,3)  B(2,3)
Ca   .3345 .1655 .5083     .00985 .00985  .00595  .00416 -.00153 -.00153
MgT1     0     0     0 .71 .00627 .00627  .00565       0       0       0
AlT1     0     0     0 .29 .00627 .00627  .00565       0       0       0
AlT2 .1407 .3593 .9370 .11 .00437 .00437  .00039 -.00070 -.00076 -.00076
SiT2 .1407 .3593 .9370 .87 .00437 .00437  .00039 -.00070 -.00076 -.00076
O1      .5     0 .1788     .00948 .00948 -.00138 -.00738       0       0
O2   .1417 .3583 .2621     .00961 .00961  .00297       0  .00479  .00479
O3   .0833 .1816 .7931     .01216 .00692  .00743 -.00255  .00358 -.00319