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Nukundamite: (Cu,Fe)4S4 Covellite: CuS
Comments: Metallic brownish rim of nukundamite with dark purplish-blue covellite on fine-grained pyrite.
Location: Ronneburg U deposit, Gera district, Thuringia, Germany.
Scale: Picture size 7 mm.
© Thomas Witzke / Abraxas-Verlag