In placer deposits derived from ultramafic rocks on the rims of platinium or iridium grains.
IMA Status:
Approved IMA 1985
Locality:
From placers around Nizhni Tagil, Ural Mountains, and at unidentified ultramafic massif in the Far Eastern Region, USSR. Link to MinDat.org Location Data.
Name Origin:
To honor S.A. Kashin, a Russian investigator of ore deposits in the Ural Mountains.