Orpiment Morimoto N Mineralogical Journal 1 (1954) 160-169 The crystal structure of orpiment (As2S3) refined Locality: Saimoku, Japan _database_code_amcsd 0014411 11.46 9.57 4.22 90 90.5 90 P2_1/n atom x y z As1 .267 .190 .143 As2 .484 .323 .643 S1 .395 .120 .500 S2 .355 .397 .013 S3 .125 .293 .410