Tetrataenite is a rare mineral that is traditionally known as ferrotetrahedrite. It is a mineral that contains iron and nickel, and it has a unique crystal structure. Some synonyms for tetrataenite include iron-nickel tetrahedrite, (Fe,Ni)12Sb4S13, and tetrahedrite-2Ni. These synonyms are used to describe the mineral in geology and mineralogy research. Tetrataenite is often found in iron meteorites, but it can also be found in rare earth-based ores. Understanding the properties of this mineral is important for the development of new technologies in fields such as aerospace and electronics.