Wollastonite-2M Mamedov K S, Belov N V Doklady Akademii Nauk SSSR 107 (1956) 463-466 The crystal structure of wollastonite _database_code_amcsd 0012435 15.36 7.285 7.084 90 95.4 90 P2_1/a atom x y z Biso Ca1 .25 .375 0 .6 Ca2 .602 .375 .263 .6 Ca3 .602 .875 .263 .6 Si1 .406 .080 .232 .6 Si2 .406 .670 .232 .6 Si3 .300 .375 .443 .6 O1 .297 .375 .667 .6 O2 .297 .875 .667 .6 O3 .345 .125 .047 .6 O4 .345 .625 .047 .6 O5 .507 .125 .229 .6 O6 .507 .625 .229 .6 O7 .362 .198 .406 .6 O8 .362 .552 .406 .6 O9 .406 .875 .232 .6