
Metallic inclusions of a mixture of the two very rare species kenoargentotetrahedrite-(Fe) & argentotetrahedrite-(Fe) in a completely analyzed specimen by SEM/EDS. From Oktyabrsky Mine, Talnakh, Noril'sk, Putoran Plateau, Taimyr Peninsula, Krasnoyarsk Krai, Russian Federation. Ex Vandenbroucke Museum collection from Waregem, Belgium. — Photo: David Hospital · CC BY 4.0
Argentotetrahedrite-(Fe)
Argentotetrahedrite-(Fe) is an IMA-recognized mineral species in the sulfosalt class, with the chemical formula Ag₆(Cu₄Fe₂)Sb₄S₁₃.
It crystallizes in the cubic crystal system (space group I-43m). It is a member of the Tetrahedrite structural group.
Key properties: Mohs hardness 4.
IMA symbol Attr-Fe, IMA status: approved, named in 2016.
Found in hydrothermal veins and contact metamorphic deposits.
As the Sb-analogue of argentotennantite. The suffix, (Fe), indicates the dominant composition in the C structural site.