Mineralization characteristics and prospective forecasting of Qulong porphyry copper(molybdenum) deposit in Tibet

Qulong copper(molybdenum) deposit located in eastern Gangdise metallogenic belt with favorable ore-forming condition.Qulong deposit belongs to typical porphyry ones,and its copper-molybdenum mineralization has close spatial-temporal and genetic relationships with biotite granodiorite porphyry and adamellite granite porphyry in Xishan Formation,which has veinlet-disseminated type features,and together with the intensive wall-rock alteration and facial type zonation.According to regional tectonic evolution and their metallogenic age,porphyry mineralization in the Gandise belt were formed in the conversion period from post-collisional compression to extension between Indian and Asian plates.Combined with geology,geochemistry exploration as well as remote sensing,it is demonstrates that the eastern Qulong mine is the most favorable ore-finding target,its denudation degree of mineralization is low and buried depth more than 1 000 m.Besides the porphyry mineralization,skarn type polymetallic ore around contact zones and vein type polymetallic ore in wall rock cracks are worthy of paying attention to.