Na2MgGd2(Si4O12)F2
Maisonneuve V, LeBlanc M
The Canadian Mineralogist 36 (1998) 1039-1043
The crystal structure of Na2MgGd2(Si4O12)F2 and its relationship with
leucophanite
Locality: synthetic
_database_code_amcsd 0005553
5.178 7.510 14.381 90 90.22 90 P2_1/c
atom      x      y      z Biso
Gd   .51375 .22882 .95706 .427
Si1   .0231  .2407  .8140  .43
Si2   .0370  .3718  .6149  .42
Mg        0      0     .5  .49
Na    .5040  .4570  .2106 1.89
F     .3366  .4607  .0610  .70
O1    .1443  .2726  .7098  .70
O2    .7152  .2423  .8137  .70
O3    .1390  .0418  .8471  .62
O4    .1636  .3733  .8853  .60
O5    .8602  .2398  .5535  .67
O6    .2868  .4433  .5595  .68