The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.
(also siserskite), a mineral of the iridosmine group (seeIRIDOSMINE). It was first discovered in the Urals, in deposits in Sysert’ Raion, Sverdlovsk Oblast.
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.