里伍铜矿矿床地质特征及找矿前景

本文通过矿床地质特征分析，结合区域地质成果，研究了里伍式铜矿矿化富集规律、找矿标志和找矿前景。指出，里伍式铜矿成矿受岩浆-变质核杂岩控制；成矿主要发生于伸展作用中后期；矿体定位受前伸展后期脆韧性构造控制；矿化与褪色化、绿泥石化、黑云母化、斜长石化关系密切。总结了核杂岩构造、构造岩性层位、围岩蚀变、物探异常等找矿标志，认为，在里伍铜矿深部、外围，以及江浪岩浆变质核杂岩外围相似核杂岩构造中，存在找寻里伍式铜矿的良好远景。

Geological Characteristics and Prospecting Perspective of the Liwu Copper Deposit in Sichuan, WS China

By analyzing geological characteristics,combining with areal geological research result, this paper studies metallization and concentration laws, criteria for ore prospecting,and prospecting perspective of the Liwu copper deposit. It is pointed out that metallization of Liwu type copper deposits is controlled by magma-metamorphic core complexs , metallogenesls took place during middle to late stage of extension, and allocation of orebodies is controlled by fragile- ductile structures formed in middle to late stage of pre- extension,and metallization is connected with parachrosis, chloritization, biotitization, anorthositization, and so on. It is brought forward that criteria for ore prospecting are core complex tectonic, tectotic lithohorizon, wallrock alteration,geophysical prospecting abnormality,etc. It is indicated that there is good prospection for hunting Liwu type copper deposits in deep and periphery of Liwu copper deposit, and in similitude core complexs in periphery of Jianglang magma metamorphism core complexs.