Melanostibite Moore P B American Mineralogist 53 (1968) 1104-1109 Substitutions of the type (Sb0.5Fe0.5)-(Ti): The crystal structure of melanostibite _database_code_amcsd 0000178 5.226 5.226 14.325 90 90 120 R-3 atom x y z occ Biso Mn 0 0 .1378 .50 Fe 0 0 .3473 .5 .22 Sb 0 0 .3473 .5 .22 O .2873 -.0252 .2559 .59