Horomanite
Horomanite is an IMA-recognized mineral species in the sulfide class, with the chemical formula Fe₆Ni₃S₈.
It crystallizes in the tetragonal crystal system (space group P4/mmm).
Key properties: Mohs hardness 3; specific gravity 6.44; Metallic luster.
IMA symbol Hmn, IMA status: approved, named in 2007.
Filling space between silicate minerals in lherzolites of a peridotite massif.
It is found associated with Samaniite and sugakiite as intergrowths; bornite, talnakhite, copper, troilite, heazlewoodite, pentlandite, magnetite, olivine, clino- and orthopyroxenes.
The name refers to the ultramafic massif (Horoman) from which the first specimens were collected.
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data — a full written entry hasn’t been published yet.
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