Fluorbritholite-(Ce)
Oberti R, Ottolini L, Della Ventura G, Parodi G C
American Mineralogist 86 (2001) 1066-1075
On the symmetry and crystal chemistry of britholite:
New structural and microanalytical data
Sample: CAPR in volcanic ejectum from Capranica, Latium, Italy
_database_code_amcsd 0002669
9.547 9.547 6.991 90 90 120 P6_3
atom     x      y      z occ Biso
Si1  .3990  .3718  .2513 .93  .68
B1   .3990  .3718  .2513 .03  .68
P1   .3990  .3718  .2513 .04  .68
Ca1    1/3    2/3 -.0048 .49  .85
Y1     1/3    2/3 -.0048 .02  .85
La1    1/3    2/3 -.0048 .11  .85
Ce1    1/3    2/3 -.0048 .21  .85
Pr1    1/3    2/3 -.0048 .02  .85
Nd1    1/3    2/3 -.0048 .06  .85
Sm1    1/3    2/3 -.0048 .01  .85
Th1    1/3    2/3 -.0048 .07  .85
U1     1/3    2/3 -.0048 .01  .85
Ca1a   2/3    1/3  .0001 .49  .82
Y1a    2/3    1/3  .0001 .02  .82
La1a   2/3    1/3  .0001 .11  .82
Ce1a   2/3    1/3  .0001 .21  .82
Pr1a   2/3    1/3  .0001 .02  .82
Nd1a   2/3    1/3  .0001 .06  .82
Sm1a   2/3    1/3  .0001 .01  .82
Th1a   2/3    1/3  .0001 .07  .82
U1a    2/3    1/3  .0001 .01  .82
Ca2  .2378 -.0116    .25 .49  .87
Y2   .2378 -.0116    .25 .02  .87
La2  .2378 -.0116    .25 .11  .87
Ce2  .2378 -.0116    .25 .21  .87
Pr2  .2378 -.0116    .25 .02  .87
Nd2  .2378 -.0116    .25 .06  .87
Sm2  .2378 -.0116    .25 .01  .87
Th2  .2378 -.0116    .25 .07  .87
U2   .2378 -.0116    .25 .01  .87
O1   .3229  .4886  .2532     1.45
O2   .5940  .4695  .2569     1.78
O3   .3168  .2431  .4218     2.11
O3a  .3580  .2604  .0595     1.35
OH4      0      0  .2359 .12 5.38
F4       0      0  .2359 .88 5.38