Features of Ore Formation of Gold Deposits of the Glukharinskii Ore Cluster (Cis-Kolyma Terrain)

This paper reports on new data on δ³⁴S and δ¹⁸O isotopy for trace and rare-earth elements of the Au deposits of the Glukharinskii ore cluster. The geochemical features indicate the reducing conditions of the ore deposition and the involvement of a magmatogenic fluid in ore-forming and point to the host rocks as possible sources of ore matter. On the basis of the isotopic data, it was determined that the ore-forming fluid has a mixed metamorphogenic–magmatogenic composition. The results suggest that the studied objects can be confidently considered as Au deposits related to granitoid intrusions.