Geological Characteristics and REE Geochemistry of Sn—mineralized Granitoids in the Mt.Hengduanshan Region—A Preliminary Study

Geological characteristics and REE geochemistry of Sn mineralized granitoids in the Mt. Hengduanshan Region — A preliminary study

Studied in this paper are the mode of occurrence, petrology, petrochemistry, Sn abundance and REE geochemistry of Sn-mineralized granitoids in the Mt. Hengduanshan Region. The results show that the concentration of Sn increases with decreasing LREE but increasing HREE in the complex plutons associated with Sn mineralization. Generally, LREE< 150ppm, HREE> 50ppm, δEu = 0.01–0.14 and symmetrically “V” -shaped curves representing the REE patterns are the important indices of Sn enrichment and mineralization. This project was finantially supported by the National Natural Science Foundation of China.