Residual mineral in a placer deposit. Intergrown with isoferropatinum and tulameenite within native ruthenium.
Approved IMA 1998 (Dana # Added)
A small unnamed placer deposit in the upper Miass River, South Urals, Russia. Link to MinDat.org Location Data.
Named after Yuri Aleksandrovich Polkanov (b. 1935), Academician, Institute of Mineral Resources, Academy of Technical Sciences of Ukraine, known for his studies of the mineralogy an d ore deposits of the Crimean Peninsul