Fluorcalciomicrolite
Andrade M B, Atencio D, Persiano A I C, Ellena J
Mineralogical Magazine 77 (2013) 2989-2996
Fluorcalciomicrolite, (Ca,Na,_)2Ta2O6F, a new microlite-group mineral
from Volta Grande pegmatite, Nazareno, Minas Gerais, Brazil
Locality: Volta Grande pegmatite, Nazareno, Minas Gerais, Brazil
_database_code_amcsd 0019993
10.4191 10.4191 10.4191 90 90 90 *Fd-3m
.125 .125 .125
atom    x    y     z  occ   Uiso U(1,1) U(2,2) U(3,3)  U(1,2)  U(1,3)  U(2,3)
CaA     0    0    .5  .53  .0130  .0130  .0130  .0130  -.0041  -.0041  -.0041
NaA     0    0    .5  .41  .0130  .0130  .0130  .0130  -.0041  -.0041  -.0041
TaB     0    0     0 .895 .00438 .00438 .00438 .00438 -.00062 -.00062 -.00062
NbB     0    0     0 .105 .00438 .00438 .00438 .00438 -.00062 -.00062 -.00062
OX   .125 .125 .3183  .99  .0087  .0082  .0082  .0097   .0051       0       0
OHX  .125 .125 .3183  .01  .0087  .0082  .0082  .0097   .0051       0       0
FY   .125 .125  .625  .79  .0121  .0121  .0121  .0121       0       0       0
OHY  .125 .125  .625  .21  .0121  .0121  .0121  .0121       0       0       0