Meniaylovite Mathew M, Takagi S, Waerstad K R, Frazier A W American Mineralogist 66 (1981) 392-397 The crystal structure of synthetic chukhrovite, Ca4AlSi(SO4)F13*12H2O _database_code_amcsd 0000826 16.710 16.710 16.710 90 90 90 *Fd3 .125 .125 .125 atom x y z occ Biso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) Ca .29171 .29171 .29171 0.0217 0.0217 0.0217 -.0027 -.0027 -.0027 Si .5 .5 .5 .5 0.0139 0.0139 0.0139 -.0017 -.0017 -.0017 Al .5 .5 .5 .5 0.0139 0.0139 0.0139 -.0017 -.0017 -.0017 S .125 .125 .125 0.0172 0.0172 0.0172 0 0 0 O .07396 .07396 .07396 0.0233 0.0233 0.0233 -.0029 -.0029 -.0029 F1 .375 .375 .375 0.0168 0.0168 0.0168 0 0 0 F2 .22049 .33649 .45070 0.0252 0.0181 0.0361 -.0005 0.0011 0.0072 OW .15481 .24744 .30479 0.0286 0.0530 0.0237 -.0141 0.0012 -.0039 H1 .126 .222 .271 3.5 H2 .135 .231 .345 5.5