Abstract
The Kuroko-Type ores of Hotaidokh deposit are enriched in a wide range of elements, compared to the average contents of elements in the upper crust. The REE spectrum of ores is dominated by light “hydrophilic” lanthanides of the “yttrium” group. The ores are characterized by low REE total contents, sharp positive Eu anomalies, as well as δEu ≫ 1, δCe < 1, and the average ratio Y/Ho ~ 48.13. Such index values indicate the deposition of ore minerals from high-temperature hydrothermal fluids becoming cold in an oxygen-bearing depth of a seawater body when the redox conditions change. Consequently, the pyritepolymetallic ores of the Hotaidokh deposit were formed from ore-forming fluids of an exhalation-hydrothermal origin. It should be noted that the data presented in this work on the composition and distribution of a number of trace elements and REEs in Kuroko-type ores of this deposit were obtained for the first time.
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