Tl3Fe2S4 Welz D, Deppe P, Schaefer W, Sabrowsky H, Rosenberg M Journal of Physics and Chemistry of Solids 50 (1989) 297-308 Magnetism of iron-sulfur tetrahedral frameworks in compounds with thallium I. Chain structures _database_code_amcsd 0013235 7.38 10.73 11.14 90 90 90 Pnma atom x y z Tl1 .410 .25 .276 Tl2 .452 .077 .635 Fe .461 .124 .966 S1 .119 .25 .668 S2 .240 .25 .022 S3 .143 .053 .377