Tetraferroplatinum
Tetraferroplatinum is an IMA-recognized mineral species in the native element class, with the chemical formula PtFe.
It crystallizes in the tetragonal crystal system (space group P4/mmm). It is a member of the Potarite structural group.
Key properties: specific gravity 15.7; Metallic. Anisotropism: Weak, in oil. R: (400) –, (420) 58.5, (440) 59.9, (460) 61.4, (480) 61.9, (500) 62.7 luster.
IMA symbol Tfpt, IMA status: approved, named in 1974.
Found in a hortonolite dunite (Mooihoek, South Africa); in Uralian ultramafics and placers derived therefrom.
It is found associated with Geversite, irarsite, majakite, sperrylite, stannopalladinite, plumbopalladinite, chalcopyrite, pentlandite, chromite, galena, magnetite.
The name refers to crystallization in the TETRAgonal system, and iron, FERRum, and PLATINUM in its composition.