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

摘要

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,LREE50ppm,δEu=0.01-0.14and symmetrically 'V'-shaped curves representing the REE patterns are the important in dices of Sn enrichment and mineralization.