探讨中咀铜矿地质特征及矿床成因

Geological characteristics and genesis of the central copper deposit

中咀铜矿床位于扬子地台的西缘,松潘-甘孜造山带东缘的江浪变质核杂岩中。江浪变质核杂岩偏北方向的区域上是该矿的分布所在,李伍岩群是该矿的主要产出部位,同时还产出黑牛洞以及里伍铜矿等,主要分布特征为似层状。变形变质在区内非常突出,不仅有突出的变质作用,而且构造置换作用呈现多期次的特点,变质序列、构造特征异常复杂。陆源碎屑岩系(变质)在矿区内较为发育。文中笔者在对该矿地质特征进行分析的基础上,探讨其矿床成因,旨在为区内找矿工作提供参考。

The Zhongzui copper deposit is located in the Jianglang metamorphic core complex on the western margin of the Yangtze platform and the eastern margin of the Songpan-Ganzi orogenic belt.The north-facing area of the Jianglang metamorphic core complex is where the deposit is distributed.The Liwu rock group is the main occurrence site of the deposit,and the Heiniudong and Liwu copper deposits are also occurring.The main distribution features are stratiform.Deformation and metamorphism are very prominent in the area,and not only have prominent metamorphism,but also structural replacement shows the characteristics of multi-stage,metamorphic sequence and structural characteristics are extremely complex.Terrigenous clastic rocks（metamorphism）are relatively developed in the mining area.Based on the analysis of the geological characteristics of the deposit,the genesis of the deposit is discussed in order to provide a reference for the prospecting work in the area.