Abstract:
Rhenium is a strategic rare metal mineral that rarely forms independent deposits.Most of it is produced in the form of associated elements in the porphyry magmatic hydrothermal system.Studies have shown that rhenium-rich deposits are mainly distributed on the edges of active oceans or continental plates, and their genesis are mainly closely related to plate subduction or collision.The mineralization age of rich rhenium deposits is relatively new, mainly in the Himalayan and Yanshanian periods.There are about 11 independent rhenium minerals reported, mainly including natural rhenium, pyrite, copper rhenium, ruthenium rhenium, rhenium oxide, etc., among which rhenium sulfite is the main one.Most rhenium is mainly present in molybdenite in the form of isomorphism, followed by chalcopyrite, pyrite, wolframite. Rhenium-rich molybdenite is usually formed in a medium-low temperature hydrothermal system.Rhenium in molybdenite often shows heterogeneity and multi-stage enrichment characteristics.The most common replacement mechanism is Re4+↔Mo4+.In nature, due to the unique chemical behavior of rhenium, rhenium can migrate in the form of gas phase, complex or ion.Under different physical and chemical conditions (such as temperature, pH, oxygen fugacity, sulfur fugacity), relatively low temperature, low pH, and reducing environment are more conducive to the enrichment and precipitation of rhenium.The paper points out that in order to further improve the metallogenic theory of rhenium, it is necessary to focus on the research on the source, occurrence state and enrichment mechanism of rhenium.
