豫西崤山东部银多金属矿地质特征及找矿方向

Geological characteristics and prospecting direction of silver polymetallic deposit in the east of Xiaoshan,western Henan Province

中河、老里湾银多金属矿是近年来在崤山东部发现的大型银多金属矿床,本文详细分析矿床的成矿地质背景、矿产地质特征,探讨成矿模式,总结归纳了找矿标志并划分找矿远景区。研究表明:NNW向断裂构造是主要控矿构造,由宽变窄、由陡变缓部位是形成厚大矿体的有利部位;成矿地质体为早白垩世燕山期的花岗斑岩体,成矿流体主要来自于岩浆期后热液,岩体为矿床形成提供了成矿物质和动力来源;崤山东部地区存在斑岩钼-中低温热液脉型银铅锌成矿系统,具有较大的找矿潜力。

Zhonghe and Laoliwan silver polymetallic deposits are large-sized deposits discovered in the eastern Xiaoshan area in recent years.In this study,we make a summary of geological setting,mineral geological features and the ore-forming patterns of the Zhonghe deposit,Moreovers wo also outline the minerogenic prospects.The research shows that the ore mineralition are mainly controlled by NNW-direction structure system,From the wide to the narrow and from the steep to the slow are the favorable parts for ore bodies;The Metallogenic geological body is the granite porphyry in the Early Cretaceous Yanshanian period.The ore fluid mainly derives from the hydrothermal fluid after the magmatic period,and the rock mass provides the ore-forming material and power source for the formation of the ore deposit;The porphyry molybdenum-medium and low temperature hydrothermal vein-type Ag-Pb-Zn ore-forming system exists in the eastern Xiaoshan.area,wo conclude that this area has a large Prospecting potential.