内蒙古北山地区碱滩山一带铜多金属矿地质特征及成因分析

Geological Characteristics and Origin Analysis of Copper Polymetallic Ore Deposits in Jiantan Mountain,Beishan Region,Inner Mongolia

碱滩山东一带铜多金属矿是内蒙古北山地区近期新发现的重要矿点,位于额济纳旗-雅干海西期铁、金、铜、钼、镍成矿带内。本研究通过系统分析该区域成矿地质背景、矿区及矿床的地质特征,探讨了矿床的成因及其成矿潜力。研究表明,该矿床的形成与早石炭世的花岗闪长岩活动紧密相关,早石炭世的岩浆活动则为成矿元素的活化、迁移和富集提供了必要的热源和动力。此外,区域结构构造及其次级裂隙系统对矿体的赋存状态、形态和矿化程度起到了决定性作用,为成矿流体提供了聚集和沉淀的有效空间,揭示了矿床显著的热液型成矿特征。本研究为该矿点及周边地区的进一步勘探和开发提供了重要的地质依据。

The Huanxintan gold polymetallic ore deposit is a newly discovered mine site in the Beishan area of Inner Mongolia.The deposit is located in the hercynian period iron,gold,copper,molybdenum and nickel metallogenic belts of the Ejinaqi-Yangan,and shows superior prospecting potential.Based on the systematic analysis of regional ore-forming geological background,geological characteristics of the mining area and geological characteristics of the deposit,the genesis and metallogenic potential of the deposit are studied.The study suggests that the mineralization of the Huanxintan gold polymetallic deposit is closely related to the Early Carboniferous monzonitic granite.The early carboniferous magmatism provides the heat source conditions and driving forces for the activation,migration and enrichment of ore-forming elements;the fault structure and its secondary fracture system control the occurrence,shape and mineralization intensity of the ore body,and provide the accumulation space and sedimentation site of the ore-forming fluid,which is consistent with the metallogenic characteristics of the medium-low temperature hydrothermal quartz vein type-altered rock type.