Distribution characteristics and influencing factors of rhenium concentrations in molybdenite from the porphyry Cu-systems: A review.

As one of key metals, rhenium (Re) is extensively used in high-tech fields such as aerospace due to its refractory geochemical properties, which is irreplaceable. Previous studies have shown that most of Re in the world is concentrated in molybdenite of porphyry Cu-Mo deposits, but Re concentrations vary significantly on the scale of ore deposits, samples and even individual molybdenite particles. At present, understanding of such difference is still unclear. Based on the data of molybdenum grades, trace elements contents of molybdenite, molybdenite Re-Os ages, lithogeochemical and Sr-Nd isotopic compositions of porphyry Cu(Mo) and Mo(Cu) deposits in the world, key factors of affecting Re concentrations in molybdenite from porphyry deposits are discussed. The results show that Re concentrations are negatively correlated with the average molybdenum grades, and mantle-derived component input may be in favor of high Re molybdenite formation. This study confirmed that there were no direct relationships between Re concentrations of molybdenite and metallogenic ages of porphyry deposits, molybdenite precipitation locations, and molybdenite polytypes. In contrast, rhenium concentrations in molybdenite may be related to the compositions of ore-forming rocks, magmatic differentiation degree, nature of ore-forming fluids, hydrothermal alteration and supergenesis.