The silver-gold sulfide investigated by the authors, uytenbogaardtite, was discovered in part of a gold-bearing quartz vein in the oxidation zone of one gold-silver deposit in western Uzbekistan, where the primary ore is ...
In the Udachnaya kimberlite pipe in the Daldyn field, Yakutia, the authors discovered and studied in our Institute the new carbonate Na2Ca(CO3)2, called zemkorite and close in composition to the known carbonate nyerereite, ...