安徽省泾县小山硫铅锌银多金属矿成矿地质背景及找矿标志  

The Metallogenic Geological Background and Prospecting Signs of Xiaoshan Sulfur-lead-zinc-silver Polymetallic Deposit in Jingxian County,Anhui Province

作　　者：齐维维[1] QI Weiwei(321 Geological Team of Anhui Provincial Bureau of Geology and Mineral Exploration)

机构地区：[1]安徽省地质矿产勘查局321地质队,安徽省铜陵市244000

出　　处：《现代矿业》2022年第6期47-50,共4页Modern Mining

摘　　要：小山硫铅锌银多金属矿位于扬子准地台下扬子台坳太平复向斜中次级褶皱铜山向斜和茂林背斜接合部。为分析其地质找矿潜力,根据勘查成果,分别从地层、构造、岩浆岩等角度详细分析了区域成矿地质背景、矿区地质特征,对矿床成因作了分析。结果表明,Ⅶ、Ⅷ、Ⅸ号矿体具有明显的层位性,矿体主要分布在石炭系下统金陵组中部渗透性强的碳酸盐岩地层中;Ⅱ~Ⅵ号矿体受断裂带控制,矿体主要赋存于北东向的断裂带中,在断裂两侧分布的碎裂岩中,蚀变矿化较发育;Ⅰ号矿体与岩浆岩关系密切,矿体主要赋存于花岗闪长斑岩与围岩接触带附近的岩石破碎带。综合分析认为矿区地层、构造、岩浆岩出露地段成矿潜力较好,是矿区下一步开展找矿勘探工作的有利部位。The Xiaoshan sulfur-lead-zinc-silver polymetallic deposit is located at the junction of the Tongshan syncline and the Maolin anticline in the middle and secondary folds of the Taiping complex syncline in the Yangtze quasi-platform.In order to analyze its geological prospecting potential,according to the exploration results,the regional metallogenic geological background and the geological characteristics of the mining area were analyzed in detail from the perspectives of stratum,structure and magmatic rock,and the genesis of the deposit was analyzed.The results show that the orebodies VII,VIII and IX have obvious stratigraphic properties,and the ore bodies are mainly distributed in the carbonate strata with strong permeability in the middle of the Jinling Formation of the Lower Carboniferous.The orebodies II to VI are controlled by the fault zone.The orebodies mainly occur in the NE-trending fault zone.In the cataclastic rocks distributed on both sides of the fault,alteration mineralization is relatively developed.The No.1 ore body is closely related to the magmatic rock,and the ore body mainly occurs in the rock fragmentation near the contact zone between the granodiorite porphyry and the surrounding rock.The comprehensive analysis shows that the strata,structure and magmatic rock outcropping area of the mining area has good metallogenic potential,which is a favorable position for the next step of prospecting and exploration in the mining area.

关 键 词：硫铅锌银多金属矿 地质特征 矿床成因 

分 类 号：P618.2[天文地球—矿床学]