American Mineralogist Crystal Structure Database

1 matching records for this search.

Arisite-(La)
 
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 0014599
5.1131 5.1131 8.6759 90 90 120 P-6m2
atom    x    y      z occ Uiso
Na      0    0      0     .014
La    2/3  1/3 .72574 .45 .011
Ce    2/3  1/3 .72574 .42 .011
Nd    2/3  1/3 .72574 .04 .011
Pr    2/3  1/3 .72574 .01 .011
Sm    2/3  1/3 .72574 .01 .011
Ca    2/3  1/3 .72574 .07 .011
C1    1/3  2/3   .804     .012
O1   .628 .814  .8013     .019
F     2/3  1/3      0     .032
C2      0    0     .5 .63 .044
O2   .847 .153     .5 .63 .025
F2   .847 .153     .5 .24 .025
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