sentences:  Antitaenite
  
  Antitaenite is a meteoritic metal alloy mineral composed of iron and nickel, 20–40% Ni (and traces of other elements) that has a face centered cubic crystal structure.Its existence as a new mineral species occurring in both iron meteorites and in chondrites was first recognized in 1995 but the IMA didn't approve paramagnetic antitaenite (a variety of taenite now).