Mg1.4Fe0.6SiS4 Fuhrmann J, Pickardt J Acta Crystallographica C46 (1990) 1996-1998 Synthesis and structure of magnesium iron thiosilicates (Mg1-xFex)2SiS4 _database_code_amcsd 0010191 12.633 7.348 5.901 90 90 90 Pnma atom x y z occ Biso MgM1 0 0 0 .283 .90 FeM1 0 0 0 .217 .90 MgM2 .23039 .25 .50848 .414 .82 FeM2 .23039 .25 .50848 .086 .82 Si .41096 .25 .09344 .5 .60 S1 .40830 .25 .73625 .5 .70 S2 .56613 .25 .24055 .5 .71 S3 .33430 .02186 .24750 .73