Pyrite
Ramsdell L S
American Mineralogist 10 (1925) 281-304
The crystal structures of some metallic sulfides
Locality: natural, unknown
_database_code_amcsd 0000006
5.38 5.38 5.38 90 90 90 Pa3
atom    x    y    z
Fe      0    0    0
S    .338 .338 .338