Gudmundite Buerger M J American Mineralogist 24 (1939) 183-184 The crystal structure of gudmundite _database_code_amcsd 0000020 6.02 5.93 6.02 90 67.87 90 P2_1/c atom x y z Fe -.300 .015 .300 Sb .149 .131 .132 S -.356 .145 .667