Smythite Erd R C, Evans H T, Richter D H American Mineralogist 42 (1957) 309-333 Smythite, a new iron sulfide, and associated pyrrhotite from Indiana _database_code_amcsd 0000080 3.47 3.47 34.5 90 90 120 R-3m atom x y z Fe1 0 0 .5 Fe2 0 0 .4171 S1 0 0 .2888 S2 0 0 .1270