Normandite
Perchiazzi N, McDonald A M, Gault R A, Johnsen O, Merlino S
The Canadian Mineralogist 38 (2000) 641-648
The crystal structure of normandite and its crystal-chemical
relationships with lavenite
Locality: Mont Saint-Hilaire, Quebec, Canada
_database_code_amcsd 0005650
10.799 9.801 7.054 90 108.075 90 P2_1/a
atom      x      y      z  occ   Uiso
Ti   .28342 .10168  .0210 .876  .0054
Nb   .28342 .10168  .0210 .124  .0054
Mn   .43676 .36666 .85877 .784 .00926
Ca   .43676 .36666 .85877 .216 .00926
Ca   .30008 .10778 .52449  .72 .00955
Na   .30008 .10778 .52449  .28 .00955
Na    .4243  .3781  .3372       .0089
Si1   .6206  .1645  .2106       .0060
Si2   .6209  .1660  .6704       .0060
O1    .6431  .1601  .4516       .0147
O2    .7395  .2647  .2014       .0102
O3    .7461  .2555  .8002       .0103
O4    .6527  .0107  .1589       .0110
O5    .6334  .0085  .7431       .0114
O6    .4765  .2206  .0967       .0095
O7    .4843  .2366  .6485       .0119
O8    .6262  .4747  .9571       .0127
F     .3896  .5054  .5992       .0167