内蒙古成和尔银多金属矿地质、化探异常特征及成因分析

Analysis on Geology,Geochemical Anomaly Characteristics and Genesis of the Chenghe,er Silver Polymetallic Deposit in Inner Mongolia

本文结合内蒙古成和尔银多金属矿的矿区地质背景,分析不同比例尺的化探异常特征和矿化蚀变带特征,明确矿床成因。经土壤化探测量及后期查证,银铅锌矿化与矿区内大面积分布的海西期花岗岩时空关系密切。银多金属矿体主要受近东西向断裂控制,同时花岗岩为成矿提供热源和物质来源,尤其富含硅质成分。分析发现,成矿与硅化程度呈正相关,这为研究区后期找矿提供借鉴。

Based on the geological background of the Chenghe'er silver polymetallic deposit in Inner Mongolia,this paper analyzes the characteristics of geochemical anomalies and mineralization alteration zones at different scales to clarify the genesis of the deposit.According to soil geochemical surveys and later verification,the mineralization of silver,lead,and zinc is closely related to the large-scale distribution of Hercynian granite in the mining area.Silver polymetallic ore bodies are mainly controlled by near east-west trending faults,while granite provides a heat source and material source for mineralization,especially rich in siliceous components.Analysis has found that mineralization is positively correlated with the degree of silicification,which provides a reference for future ore exploration in the study area.