Polished section of the very rare Fe hydroxide-chloride hibbingite from Talnakh in a specimen that was analyzed. From Talnakh, Noril'sk, Putoran Plateau, Taimyr Peninsula, Krasnoyarsk Krai, Russian Federation. Ex Vandenbroucke Museum collection from Waregem, Belgium. — Photo: David Hospital · CC BY-SA 4.0
Hibbingite
An iron hydroxychloride found in partially serpentinized troctolite of Minnesota's Duluth Complex.
Intro adapted from Wikipedia (CC BY-SA).
Hibbingite is an IMA-recognized mineral species in the halide class, with the chemical formula Fe²⁺₂(OH)₃Cl.
It crystallizes in the orthorhombic crystal system (space group Pnam). It is a member of the Atacamite structural group.
Key properties: specific gravity 3.04.
IMA symbol Hib, IMA status: approved, named in 1991.
Found in serpentinized troctolite and peridotite (Hibbing, Minnesota, USA); in fractures in chlorine-rich portions of a Cu-Ni orebody (Strathcona mine, Canada); in terrestrially weathered iron meteorites.
It is found associated with Akaganeite, magnetite, maghemite, goethite, serpentine, olivine, plagioclase, biotite (Hibbing, Minnesota, USA); chalcopyrite, pentlandite (Sudbury, Canada).
The name refers to Hibbing, Minnesota, USA, from near where the mineral was first characterized.