Pertsevite-(F) Brovkin A A, Nikishova L V Soviet Physics Crystallography 20 (1975) 452-455 The crystal structure of a-Mg2BO3F and the isomorphic substitution (3F)=(BO3) Locality: synthetic _database_code_amcsd 0015570 20.44 4.530 11.80 90 90 90 Pna2_1 atom x y z occ Biso Mg1 .0149 .504 .0235 .5 Mg2 .4859 .974 .2699 .6 Mg3 .2453 .468 .2591 .3 Mg4 .2542 .956 .0319 .3 Mg5 .1276 .974 .1657 .6 Mg6 .1157 .482 .3989 .6 Mg7 .3812 .486 .1201 .5 Mg8 .3780 .472 .393 .2 B1 .344 .924 .233 .3 B2 .183 .927 .394 .3 B3 .157 .445 .061 .1 B4 .023 .032 .428 .2 B5 .024 .07 .193 .56 .3 O1 .0389 .743 .156 .56 .5 F1 .0389 .743 .156 .44 .5 O2 .0295 .747 .395 .6 O3 .1015 .280 .027 .9 O4 .0665 .200 .492 .5 O5 .1665 .732 .030 .3 O6 .1703 .782 .494 .2 O7 .1986 .289 .125 .4 O8 .2002 .215 .390 .1 O9 .3006 .773 .161 .2 O10 .4663 .269 .142 .56 .4 F10 .4663 .269 .142 .44 .4 O11 .4669 .303 .391 .2 O12 .1704 .758 .297 .5 O13 .3366 .222 .253 .3 O14 .0722 .254 .263 .56 .8 F14 .0722 .254 .263 .44 .8 O15 .3989 .788 .265 .1 F .2889 .644 .395 .3