Nukundamite (Picture size 7 mm) Fundort: Ronneburg, Thuringia, Germany Light bronce-coloured rim of nukundamite on fine-grained pyrite. Collection and foto Thomas Witzke. — Photo: Thomas Witzke · CC BY-SA 3.0 de
Nukundamite
Nukundamite is an IMA-recognized mineral species in the sulfide class, with the chemical formula Cu₃.₄Fe₀.₆S₄.
It crystallizes in the hexagonal crystal system (space group P-3m1).
Key properties: specific gravity 4.3; Metallic luster.
IMA symbol Nuk, IMA status: approved, named in 1978.
Found as a primary mineral in a Kuroko-type deposit (Undu mine, Fiji Islands); also an alteration product of primary chalcopyrite.
It is found associated with Pyrite, covellite, chalcopyrite, bornite, sphalerite.
The name refers to the Fijian locality at Nukundamu.