Mackinawite Lennie A R, Redfern S A T, Schofield P F, Vaughan D J Mineralogical Magazine 59 (1995) 677-683 Synthesis and Rietveld crystal structure refinement of mackinawite, tetragonal FeS Locality: synthetic _database_code_amcsd 0014518 3.6735 3.6735 5.0328 90 90 90 P4/nmm atom x y z Biso Fe 0 0 0 .41 S 0 .5 .2602 .20