Frolovite
Simonov M A, Kazanskaya E V, Egorov-Tismenko Y K, Zhelezi E P, Belov N V
Doklady Akademii Nauk SSSR 230 (1976) 91-94
Refinement of the crystal-structure of frolovite, Ca[B(OH)4]2
Note: T = 18 C
_database_code_amcsd 0019821
7.774 5.680 8.136 113.15 101.67 107.87 P-1
atom      x      y      z Biso  B(1,1)  B(2,2)  B(3,3)  B(1,2)  B(1,3)  B(2,3)
Ca   .23679 .01781 .18910  .73 .003806 .007751 .004189 .002389 .001150 .002973
B1    .0278  .4072  .2349  .84 .004388 .008987 .004551 .002697 .001464 .003277
B2    .4388  .3151  .7120  .76 .004071 .008538 .003930 .002620 .001464 .002668
O1    .0655  .7060  .3014  .99 .005868 .007527 .005999 .002774 .002091 .002896
O2    .0830  .2948  .0654 1.00 .005445 .009774 .004809 .002389 .002091 .002439
O3    .1418  .3711  .3841 1.10 .006608 .015727 .005430 .005472 .001412 .005335
O4    .1819  .7728  .8315 1.00 .003965 .010560 .007343 .002312 .002091 .005107
O5    .2392  .1436  .6828 1.11 .004176 .011459 .007085 .001695 .002248 .004192
O6    .4245  .7349  .1612  .90 .005075 .011796 .004654 .004316 .001516 .004345
O7    .4672  .2291  .5274  .91 .005762 .010560 .003723 .003545 .001778 .002896
O8    .4862  .6227  .8083  .92 .004864 .006965 .005740 .002466 .001725 .002287
H1     .020   .292   .688 10.1
H2     .191   .416   .078  2.9
H3     .232   .485   .415   12
H4     .793   .107   .202  3.5
H5     .183   .027   .581    3
H6     .541   .277   .929    3
H7     .498   .150   .520   13
H8     .609   .346   .204  2.7