江西瑞昌通江岭矿田地质特征及成矿远景分析

Geological Characteristics and Analysis of Metallogenic Prospects in the Ore Field of Tongjiangling in Ruichang, Jiangxi Province

摘要: 通江岭铜多金属矿床是九瑞矿集区近年来取得的重大找矿突破，通过对矿区地层、岩浆、构造特征和铜矿体特征研究，认为成因类型可分热液充填型、斑岩型和矽卡岩型三种。通江岭铜矿体与中酸性岩浆岩活动关系密切，主要赋存于花岗闪长斑岩以及与围岩接触带部位，同时受NEE向断裂构造控制作用明显，不仅控制了区域上岩浆岩的侵入就位，也是热液运移的通道，通过与围岩发生接触交代反映，形成矽卡岩矿体，在构造–地层–岩浆岩接合部位成矿。结合前人总结的九瑞地区“多位一体”成矿模式基础上，认为矿区深部具有中–大型铜多金属矿的找矿潜力。

Abstract: The copper polymetallic deposit of Tongjiangling is an important prospecting breakthrough in Jiurui ore concentration area in recent years. Based on the study of the strata, magmas rock, geological structural characteristics and copper ore body characteristics of the ore area, it is considered that the genetic types can be divided into three types: hydrothermal filling type, porphyry type and skarn type. The copper ore body of Tongjiangling is closely related to the activities of intermediate-acid magmatic rocks, mainly occurring in granodiorite porphyry and the contact zone with surrounding rock. Meanwhile, it is obviously controlled by NEE-oriented fault structure, which not only controls the intrusion and placement of magmatic rocks in the region, but also serves as a channel for hydrothermal migration. Through the contact metasomatic reaction with the surrounding rock, the skarn ore body is formed, and the mineralization is formed at the junction of the structure-strata-magmatic rock. Based on the “multi-position in one” ore-forming model of Jiurui area summarized by predecessors, it is considered that the deep part of the mine has the prospecting potential of medium to large copper polymetallic deposit.