Mieite-(Y)
Balko V P, Bakakin V V
Zhurnal Strukturnoi Khimii 16 (1975) 837-842
Crystal-structure of natural yttrium and rare-earth fluorotitano-silicate
(Y,Ree)4(F,OH)6TiO[SiO4]2 (yftisite)
_database_code_amcsd 0015895
14.949 10.626 7.043 90 90 90 Cmcm
atom     x     y     z Biso
Y1   .1464 .4368   .25  1.2
Y2   .1313 .7933   .25  1.0
Ti       0     0    .5  1.3
Si   .1559 .1200   .25   .2
O1   .0954 .1262 .0553  1.0
O2   .2952 .4854   .25   .7
O3   .2201 .2487   .25   .7
O4      .5 .4337   .25   .7
F1   .3582 .1181 .0610   .9
F2       0 .4204   .25  4.2
F3       0 .6987   .25  1.9