摘要
张家口市阳原县孙家庄矿区是冀北地区新发现的银铅锌矿床,位于华北克拉通边缘,是中国最重要的钼、钨、铅、锌、金和银成矿带,主要赋存于燕山期侵入岩石英斑岩及白垩纪张家口组流纹质熔结凝灰岩中。矿区韧性剪切强烈,矿化蚀变发育,主要为铁锰矿化、铅锌矿化、褐铁矿化、硅化、高岭土化。矿体主要分布于石英斑岩、张家口组流纹质熔结凝灰岩及其接触带铁锰矿化—方铅矿化—褐铁矿化中。矿体呈细脉状、团块状、星散状、浸染状和不规则状。矿区处于激电异常和Pb、Ag、Zn、Mo、Sb、Bi、As、W等元素组成的化探异常中,异常带呈北西—南东向延伸,对矿区勘查具有很好的指示作用。文章研究了该矿区内矿化带及矿体特征,总结了地质、激电中梯和岩石地球化学找矿方法,在分析研究区域矿床资料的基础上,结合孙家庄银铅锌矿区的地质、地球物理、地球化学和找矿勘查成果获得的相关信息建立了该矿床的找矿模式,提出进一步找矿方向,以期为矿区进一步勘查提供依据。
Sunjiazhuang mining area,Yangyuan County,Zhangjiakou City,is a newly discovered silver-lead-zinc deposit in northern Hebei Province,located on the edge of North China Craton.It is the most important molybdenum,tungsten,lead,zinc,gold and silver metallogenic belt in China,mainly occurring in the Yanshanian intrusive rocks quartz porphyry and Cretaceous Zhangjiakou Formation rhyolitic melt-tuff.The ductile shear in the mining area is strong and mineralization alteration is developed,which mainly includes iron manganese mineralization,lead zinc mineralization,limonite mineralization,silication and kaolin mineralization.The ore bodies are mainly distributed in quartz porphyry,Zhangjiakou Formation rhyolitic fused tuff and its contact zone of iron-manganese mineralization,galena mineralization and limonite mineralization.The ore body is in the form of fine vein,mass,scattered,disseminated and irregular.The mining area is located in the IP anomaly and the geochemical anomaly composed of Pb,Ag,Zn,Mo,Sb,Bi,As,W and other elements,and the anomaly zone extends from northwest to southeast,which has a good indication for mining area exploration.This paper studies the characteristics of the mineralized belt and orebody in this ore area,summarizes the prospecting methods of geology,IP mesothermal ladder and rock geochemistry,and establishes the prospecting model of this ore deposit based on the analysis of the deposit data in the study area and the relevant information obtained from the geological,geophysical,geochemical and prospecting results of the Sunjiazhuang silver-lead-zinc deposit to provide a basis for further exploration of the mining area.
作者
高立建
刘创脱
赵志彬
张良良
王丰翔
GAO Li-jian;LIU Chuang-tuo;ZHAO Zhi-bin;ZHANG Liang-liang;WANG Feng-xiang(No.1 Team of Hebei Bureau of Geology and Mineral Resources Exploration,Handan 056001,China;Hebei GEO University,Shijiazhuang 050031,China)
出处
《河北地质大学学报》
2024年第3期20-30,共11页
Journal of Hebei Geo University
基金
河北省阳原县孙家庄铅锌银多金属矿普查项目(454-0402-YBN-4TQB)。
关键词
张家口
银铅锌矿
地质特征
找矿方向
前景分析
Zhangjiakou
Ag-Pb-Zn deposit
geological feature
prospecting direction
prospect analysis
