Lukechangite-(Ce)
Grice J D, Chao G Y
American Mineralogist 82 (1997) 1255-1260
Lukechangite-(Ce), a new rare-earth-fluorocarbonate mineral from
Mont Saint-Hilaire, Quebec
Note: U(1,2) for Na1, O1, O2 and F changed to match symmetry constraints.
Note: U(2,3) for O2 changed to match symmetry constraints.
_database_code_amcsd 0001952
5.0612 5.0612 22.820 90 90 120 P6_3/mmc
atom      x     y      z U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
Nal     1/3   2/3  .4777  .0265  .0265  .0239 .01325      0      0
Na2       0     0    .25  .0276  .0276  .0083  .0138      0      0
Ce      2/3   1/3 .35447  .0092  .0092  .0047  .0046      0      0
C1        0     0  .4358  .0123  .0123  .0121  .0061      0      0
C2      1/3   2/3  .3239  .0098  .0098  .0074  .0049      0      0
O1    .2896 .1448  .4375  .0127  .0783  .0116 .00635  .0002  .0001
O2   .18705 .3741  .3241  .0159  .0105  .0198 .00525 -.0005 -.0010
F       2/3   1/3    .25  .0277  .0277  .0117 .01385      0      0