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 = -140 C
_database_code_amcsd 0019822
7.745 5.667 8.102 113.24 101.54 107.92 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   .23651 .01813 .18818  .36 .001916 .003957 .001826 .003103 .000790 .000845
B1    .0287  .4076  .2353  .52 .002768 .006444 .002504 .004344 .001212 .001843
B2    .4383  .3149  .7119  .48 .002555 .005539 .002191 .003879 .000896 .001305
O1    .0660  .7080  .3016  .58 .003087 .007914 .002295 .004965 .001370 .002227
O2    .0830  .2948  .0654  .54 .002875 .005992 .002608 .003956 .000896 .001613
O3    .1433  .3739  .3859  .60 .003194 .006896 .003651 .004267 .001686 .000998
O4    .1820  .7724  .8306  .56 .002981 .005766 .002556 .005973 .001159 .002073
O5    .2384  .1414  .6825  .61 .003247 .005426 .003077 .005198 .000685 .001613
O6    .4243  .7353  .1606  .51 .002715 .005992 .003077 .003646 .001475 .001075
O7    .4675  .2288  .5267  .51 .002715 .006670 .002869 .003103 .001370 .001382
O8    .4858  .6236  .8092  .53 .002821 .005879 .001982 .004810 .001001 .001305
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