Sperrylite

specimen number:
9302323

location:
Talnakh, Taimyr, Krasnoyarsk Krai, Russia

description:

Bright metallic sharp crystals to 0.5 cm in size embedded up on matrix. In good condition, fine thumbnail sized example for the species.

The Talnakh deposit, located near Norilsk in the Krasnoyarsk Krai region of Siberia, Russia, is one of the world's largest magmatic sulfide mining complexes. Geologically, the deposit is hosted within the fully differentiated, ultramafic-to-mafic Talnakh intrusion, which is genetically linked to the massive Permian-Triassic Siberian Traps flood basalt event. Heavy magmatic segregation caused immense concentrations of copper-nickel sulfides and platinum-group elements to pool at the base of the intrusive sheets, forming massive, disseminated, and vein-type ore bodies rich in chalcopyrite, pentlandite, and pyrrhotite. Underground mining operations began following the definitive discovery of the deep Talnakh ore bodies in 1960, leading to the rapid development of major deep-shaft mines like Mayak, Komsomolsky, Skalisty, and Oktyabrsky, which have run continuously from the mid-1960s through the present day.

Sperrylite is a rare platinum arsenide mineral that serves as the premier crystalline platinum mineral species. Geologically, it occurs primarily as an accessory mineral within deep-seated layered mafic intrusions, magmatic copper-nickel sulfide deposits, and occasionally within secondary alluvial placers derived from these source rocks. The mineral is highly prized by collectors for its exceptional, brilliant metallic luster, tin-white coloration, and its propensity to form well-developed, highly resilient cubic, octahedral, or dodecahedral crystals that resist both chemical weathering and physical abrasion.

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