Arisite-(Ce)
Piilonen P C, McDonald A M, Grice J D, Cooper M A, Kolitsch U,
Rowe R, Gault R A, Poirier G
Mineralogical Magazine 74 (2010) 257-268
Arisite-(La), a new REE-fluorcarbonate mineral from the Aris phonolite (Namibia),
with descriptions of the crystal structures of arisite-(La) and arisite-(Ce)
Locality: Aris, Namibia
Note: x-coordinate of O1 adjusted to special position
_database_code_amcsd 0014600
5.1109 5.1109 8.6713 90 90 120 P-6m2
atom     x     y      z occ Uiso
Na       0     0      0     .013
Ce     2/3   1/3 .72542 .47 .012
La     2/3   1/3 .72542 .40 .012
Pr     2/3   1/3 .72542 .02 .012
Nd     2/3   1/3 .72542 .05 .012
Sm     2/3   1/3 .72542 .01 .012
Ca     2/3   1/3 .72542 .05 .012
C1     1/3   2/3   .805     .013
O1   .6252 .8126  .8013     .017
F      2/3   1/3      0     .031
C2       0     0     .5 .70 .033
O2   .8475 .1525     .5 .70 .026
F2   .8475 .1525     .5 .20 .026