Amesite Steadman R, Nuttall P M Acta Crystallographica 15 (1962) 510-511 The crystal structure of amesite Note: polytype 6R Locality: Saranovskaye, USSR _database_code_amcsd 0018742 5.31 5.31 42.1 90 90 120 R3 atom x y z occ MgY1 .333 0 .245 .667 AlY1 .333 0 .245 .333 MgY2 .667 0 .078 .666 AlY2 .667 0 .078 .334 SiX1 0 0 .514 .5 AlX1 0 0 .514 .5 SiX2 0 0 .847 .5 AlX2 0 0 .847 .5 SiX3 0 0 .347 .5 AlX3 0 0 .347 .5 SiX4 0 0 .681 .5 AlX4 0 0 .681 .5 O1 0 0 .554 O2 0 0 .887 O3 0 0 .387 O4 0 0 .721 O5 .550 0 .167 O6 .450 0 0 OH1 .667 0 .269 OH2 .333 0 .102 OH3 0 0 .221 OH4 0 0 .054