Tetrataenite Clarke R S, Scott E R D American Mineralogist 65 (1980) 624-630 Tetrataenite - ordered FeNi, a new mineral in meteorites Locality: Cape Town iron meteorite _database_code_amcsd 0000787 2.533 2.533 3.582 90 90 90 P4/mmm atom x y z Fe 0 0 0 Ni .5 .5 .5