内蒙古园包山地区换新滩金多金属矿矿床地质特征及成因分析
|
摘要
换新滩金多金属矿是内蒙古北山地区新发现的一处矿点,位于额济纳旗-雅干海西期铁、金、铜、钼、镍三级成矿带内,成矿地质条件优越。本文在系统分析区域成矿地质背景、矿区地质特征、矿床地质特征的基础上,对矿床成因、成矿潜力进行了研究。研究认为,换新滩金多金属矿成矿作用与晚石炭世二长花岗岩关系密切,晚石炭世岩浆活动为矿床的形成提供了成矿元素活化、迁移和富集的热源条件和驱动力;断裂构造及其次级裂隙系统控制了矿体的产状、形态和矿化强度,提供了成矿流体的聚集空间和沉淀场所,矿点具有中低温热液石英脉型-蚀变岩型的成矿特征。
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 Late Carboniferous monzonitic granite.The late 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.
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 Late Carboniferous monzonitic granite.The late 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.
引文
[1]邵和明,张履桥.内蒙古自治区主要成矿区(带)和成矿系列[R].内蒙古地质矿产勘查开发局,2001.
[2]聂凤军,江思宏,白大明.北山地区金属矿床成矿规律及找矿方向[M].北京:地质出版社,2002.
[3]龚全胜,刘明强,李海林,等.甘肃北山造山带类型及基本特征[J].西北地质,2002,35(3):28-34.GONG Quansheng,LIU Mingqiang,LI Hailin,et al.Types and basic characteristics of the Beishan orogenic belt in Gansu province[J].Northwestern Geology,2002,35(3):28-34.
[4]龚全胜,刘明强,梁明宏,等.北山造山带大地构造相及构造演化[J].西北地质,2003,36(1):11-16.GONG Quansheng,LIU Mingqiang,LIANG Minghong,et al.Tectonic facies and tectonic evolution of the Beishan orogenic belt[J].Northwestern Geology,2003,36(1):11-16.
[5]李杰,田颖,班长勇,等.北山地区园包山一带晚石炭世早期花岗岩地球化学特征及年代学研究[J].岩石矿物学杂志,2019,38(2):159-171.LI Jie,TIAN Ying,BAN Changyong,et al.Geochemical characteristics and chronology of early Late Carboniferous granites in Yuanbaoshan area,Beishan region[J].Acta Petrologica et Mineralogica,2019,38(2):159-171.
[2]聂凤军,江思宏,白大明.北山地区金属矿床成矿规律及找矿方向[M].北京:地质出版社,2002.
[3]龚全胜,刘明强,李海林,等.甘肃北山造山带类型及基本特征[J].西北地质,2002,35(3):28-34.GONG Quansheng,LIU Mingqiang,LI Hailin,et al.Types and basic characteristics of the Beishan orogenic belt in Gansu province[J].Northwestern Geology,2002,35(3):28-34.
[4]龚全胜,刘明强,梁明宏,等.北山造山带大地构造相及构造演化[J].西北地质,2003,36(1):11-16.GONG Quansheng,LIU Mingqiang,LIANG Minghong,et al.Tectonic facies and tectonic evolution of the Beishan orogenic belt[J].Northwestern Geology,2003,36(1):11-16.
[5]李杰,田颖,班长勇,等.北山地区园包山一带晚石炭世早期花岗岩地球化学特征及年代学研究[J].岩石矿物学杂志,2019,38(2):159-171.LI Jie,TIAN Ying,BAN Changyong,et al.Geochemical characteristics and chronology of early Late Carboniferous granites in Yuanbaoshan area,Beishan region[J].Acta Petrologica et Mineralogica,2019,38(2):159-171.