Gearksutite
Marchetti F, Perchiazzi N
American Mineralogist 85 (2000) 231-235
The crystal structure of gearksutite, CaAlF4(OH).H2O
_database_code_amcsd 0002346
4.940 6.810 6.978 101.12 94.86 110.07 P-1
atom      x     y     z Uiso
Ca    .3562 .3876 .2225 .010
Al   -.0055 .8281 .3384 .008
F1    .2315 .6851 .2942 .014
F2    .1998 .0205 .2080 .013
F3    .7342 .6746 .1146 .013
F4    .2343 .3701 .5394 .012
OW    .7835 .2524 .1499 .015
O1    .2202 .9948 .5884 .009