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Comments: Brassy, lustrous, cyclic-twinned cubanite on matrix.
Location: Henderson # 2 Mine, Chibougamau, Quebec, Canada.
Scale: 10x6 mm.
© Tom Loomis / Dakota Matrix
Cubanite: CuFe2S3 Plumbopalladinite: Pd3Pb2 Valleriite: 4(Fe,Cu)S·3(Mg,Al)(OH)2 Pentlandite: (Fe,Ni)9S8
Comments: Polished Section image (PPL) of plumbopalladinite (Pl) with polarite Po), surrounded by a rim of isoferroplatinum (Iso) with cubanite (Cu), pentlandite (Pe), and valleriite (Va).
Location: Majak Mine, Talnakh, Norilsk, Ural, Russia.
Scale: Picture Size 0.7 mm.
© Thomas Witzke