Metallogenetic Characteristics and Prospecting Direction of the Cu Polymetallic Deposit in Qiangdui-Shannan Area of Tibet

The Qiangdui-Shannan area,in which several middle to large-sized Cu polymetallic deposits have been found,is located in the southeastern part of the Gandise Cu polymetallic metallogenic belt with the superior condition of ore-formation.There are skarn,porphyry,and the compound of skarn and porphyry types of deposits.Ore-bearing horizon in this area starts from Bima group(K1b),Menzhong Group(K1-2m)and Duodigou Group(J3d).The geochemistry component related to mineralization is characteristic of being rich in Na(or K)and Sr,poor in heavyrare-earth elements.Under the control of East-west volcanic arc zone,this deposit if equidistant distributed and focused with belts and fragments.This paper is going to the geological characteristics of ore-formation and the relationship between strata,intrusives and the Cu polymetallic mineralization have been summarized in this paper.The prospecting aspects and targets have been proposed based on the ore-forming condition and potential in Qiangdui-Shannan area.