Dienerite, Sobolevskite, Urvantsevite, Stannopalladinite, Sperrylite, Tetraferroplatinum, Gold, Tetra-auricupride

Locality: Talnakh Cu-Ni Deposit, Noril'sk, Putoran Plateau, Taimyr Peninsula, Taymyrskiy Autonomous Okrug, Eastern-Siberian Region, Russia

SEM image. Light-grey in BSE prismatic crystal of Sobolevskite (with composition changing from Pd1.04Bi.96 to Pd1.04(Bi.84Pb.12).96) with abundant inclusions of PGM grains into "massive" grey Tetraferroplatinum (with composition Pt.87(Fe.83Ni.18Cu.12)1.13) matrix.
Three radically black drops are represented by DIENERITE with composition Ni3.10As.90.
Grey drops are Sperrylite PtAs2.
Large light prismatic grain on the bottom of the Sobolevskite crystal is Urvantsevite Pd1.01(Bi1.47Pb.52)1.99.
Dark grey triangular grain under Urvantsevite one is Stannopalladinite with more bright minute inclusions of Unnamed Pd12NiBi3Sn3. Two parallel dark-grey prismatic crystals into Tetraferroplatinum at the right side also are Stannopalladinite.
Very similar to former dark-grey parallel prismes included into Sobolevskite are Unnamed Pd4SbSn.
And, at last, two Au-Ag-Cu alloys grains located on SW and NE corners of the Sobolevskite crystal. The first, bright one is Gold of composition Au.70Ag.30. The second, grey one (close to platinum matrix by colour, it is marked by the third, upper Dienerite drop) is Tetra-auricupride of composition (Au.80Pd.08).88Cu1.12.
Pavel M. Kartashov analythical data, collection and photo.

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Photo added: 18th Dec 2007

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