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: 100% Ak
_database_code_amcsd 0007698
7.8288 7.8288 5.0052 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   .3320  .168 .5050     .01093 .01093  .00628  .00469 -.00357 -.00357
MgT1     0     0     0 .96 .00599 .00599  .01576       0       0       0
SiT2 .1395 .3605 .9334     .00195 .00195 -.00020  .00020 -.00095 -.00095
O1      .5     0 .1775     .01011 .01011  .00289 -.00868       0       0
O2   .1409 .3591 .2547     .01007 .01007  .00399       0  .00695  .00695
O3   .0816 .1870 .7879     .01627 .00444  .01257 -.00330  .00535 -.00274