Fluorcalciobritholite
Pekov I V, Pasero M, Yaskovskaya A N, Chukanov N V, Pushcharovsky D Y,
Merlino S, Zubkova N V, Kononkova N N, Men'shikov Y P, Zadov A E
European Journal of Mineralogy 19 (2007) 95-103
Fluorcalciobritholite, (Ca,REE)5[(Si,P)O4]3F, a new mineral: description and
crystal chemistry
Locality: Mount Kukisvumchorr, Khibiny alkaline complex, Kola Peninsula, Russia
_database_code_amcsd 0007198
9.580 9.580 6.985 90 90 120 P6_3/m
atom     x     y     z  occ  Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
Ca1    1/3   2/3 .0006 .654 .0311  .0367  .0367  .0200  .0183      0      0
Ce1    1/3   2/3 .0006 .161 .0311  .0367  .0367  .0200  .0183      0      0
La1    1/3   2/3 .0006 .094 .0311  .0367  .0367  .0200  .0183      0      0
Nd1    1/3   2/3 .0006 .045 .0311  .0367  .0367  .0200  .0183      0      0
Y1     1/3   2/3 .0006 .031 .0311  .0367  .0367  .0200  .0183      0      0
Pr1    1/3   2/3 .0006 .014 .0311  .0367  .0367  .0200  .0183      0      0
Ca2  .2487 .0107   .25 .566 .0330  .0366  .0310  .0258  .0126      0      0
Ce2  .2487 .0107   .25 .203 .0330  .0366  .0310  .0258  .0126      0      0
La2  .2487 .0107   .25 .118 .0330  .0366  .0310  .0258  .0126      0      0
Nd2  .2487 .0107   .25 .057 .0330  .0366  .0310  .0258  .0126      0      0
Y2   .2487 .0107   .25 .039 .0330  .0366  .0310  .0258  .0126      0      0
Pr2  .2487 .0107   .25 .017 .0330  .0366  .0310  .0258  .0126      0      0
Si   .3718 .4001   .25 .650 .0261   .028   .031   .022   .017      0      0
P    .3718 .4001   .25 .350 .0261   .028   .031   .022   .017      0      0
O1   .4677 .5906   .25       .043   .037   .032   .056   .014      0      0
O2   .4866 .3255   .25       .037   .036   .057   .030   .032      0      0
O3   .2563 .3432 .4310       .054   .048   .098   .034   .049   .013   .028
F        0     0   .25       .092   .058   .058   .159   .029      0      0