宁蒗铜厂河铜矿床成矿条件研究

A STUDY ON THE METALLOGENETIC CONDITION OF TONGCHANGHE CU DEPOSIT IN NINGLANG,YUNNAN

宁蒗铜厂河铜矿床系喜马拉雅期隐伏斑岩体外接触带玄武岩系热液型铜矿床 ,其主要含矿层位为上二叠统玄武岩组三段 (P2 β3)与黑泥哨组 (P2 h)。主干控矿构造为南北向断裂体系 ,铜矿化均产于NW向F1断裂的下盘 (南盘 )。矿区具显著的成矿多期、多阶段性和矿化体水平、垂直分带性规律。通过对碳、氧、硫等稳定同位素和包裹体分析及成矿热液演化特征探讨 ,建立了铜厂河铜矿热液成矿模式。

The Tongchanghe Cu deposit in Ninglang is a hydrothermal deposit in the basalt series of the outer contact of a Himalayan blind porphyry body.whose main ore-bearing horizons are the Third Member of Upper Permian Basalt Formation(P 2β 3)and Heinishao Formation(P 2h).The main structure controlling ore deposit is NS fault system.And the Cu metallogenesis is occurred in the lower side(S side)of the NW fault F 1.This Cu deposit has the evident multistage character of metallogenesis and horizontal and vertical zoning law of ore body.The hydrothermal metallogenesis model of it is set up according to the analysis of C,S,O stable isotopes and inclusion and the study on hydrothermal evolution of metallogenesis.