Fukalite dimorph Rastsvetaeva R K, Bolotina N B, Zadov A E, Chukanov N V Doklady Earth Sciences 405A (2005) 1347-1351 Crystal structure of fukalite dimorph Ca4[Si2O6](CO3)(OH)2 from the Gumeshevsk Deposit the Urals Locality: Gumeshevsk Deposit the Urals _database_code_amcsd 0012514 3.786 10.916 23.379 90 90 90 P2_12_12_1 atom x y z occ Biso Ca1 .2519 .3742 .4562 .55 Ca2 .2566 .0553 .6907 .74 Ca3 .2493 .3082 .1932 .79 Ca4 .2471 .1241 .9545 .58 Si1 .3275 .3734 .7216 .49 .51 Si2 .1787 .3782 .5875 .52 .12 Si3 .1533 .3756 .7137 .49 .54 Si4 .3384 .3712 .5839 .48 1.3 C .281 .1231 .0813 .29 O1 .262 .2550 .5515 .6 O2 .252 .5084 .0462 .6 O3 .248 .2284 .0523 .8 O4 .235 .0242 .0506 .9 O5 .211 .1281 .1351 .8 O6 .188 .4993 .2427 1 1.5 O7 .237 .2461 .7413 3.2 O8 .359 .3768 .6483 1.1 O9 .238 .125 .2582 .53 .9 O10 .263 .123 .3980 .46 .9 Oh1 .259 .1256 .8565 .9 Oh2 .242 .3782 .3571 1 .8 Hl .255 .058 .849 3.0 H2 .243 .314 .342 3.0