Mineralizing Texture and Metallogenic Model of the Laochang Polymetallic Deposit in Lancang,Yunnan

In this century,locating potential ores in depth of has become an important object of mineral exploration and research for critical mines in China.Base on the data of the latest synthesize research and exploration,this paper discussed the spatial texture of mineralization and metallogenic system of the Laochang polymetallic deposit in Lancang.This study indicates that:the orebodies in Laochang mining area have been divided into six ore clusters which are composed of poly-epoch、poly-genesis and poly-type orebodies.Three of them are stratabound Pb-Zn-Ag-Cu ore clusters which were related to the early Carboniferous volcano-exhalative sedimentary activity and formed in continental rift setting,and the other are veined Pb-Zn-Ag ore bodies and veint-disseminated Mo(Cu)ore bodies which were related to Himalayan concealed granite-porphyry in genesis and formed in intracontinental collision orogenenesis setting.Six ore clusters constituted a special three layers+three zones mineralizing texture in spatial distribution.According to the mineralize feature,syntopogenic-superposition metallogenic model is proposed,and there is a great exploration potential for porphyry Mo(Cu)deposit in the mining area.