摘要
八仙脑钨锡多金属矿床位于赣南崇(义)—(大)余—(上)犹矿集区中部,天门山花岗岩岩体南部外接触带,该矿床为赣南地区破碎带蚀变岩型、石英脉型、石英脉和云英岩复合型钨锡多金属矿床的典型代表。对矿床破碎带蚀变岩型钨铅锌多金属矿体中的白云母进行^(40)Ar/^(39)Ar测年,获得白云母40Ar/39Ar坪年龄为157.2±1.0 Ma,等时线年龄为157.3±1.8 Ma(MSWD=1.20),反等时线年龄为156.0±3.0 Ma(MSWD=19)。结合前人研究成果,认为矿区破碎带蚀变岩型、石英脉型钨多金属矿体形成时代同属燕山早期,为同期构造-岩浆活动不同成矿阶段的产物。该成果对深化崇(义)—(大)余—(上)犹矿集区不同类型矿床年龄谱系、成矿规律和找矿方向提供年代学支持。
Located in the middle of Chongyi-Dayu-Shangyou ore concentration area in southern Jiangxi,Baxiannao W-Sn polymetallic deposit is in the outer contact zone of Tianmenshan granite body.It is a typical representative of altered rock type,quartz vein type,quartz vein and greisen composite W-Sn polymetallic deposit.The muscovite in altered rock type W-Pb-Zn polymetallic ore body in the fracture zone of the deposit is dated at ^(40)Ar/^(39)Ar,and the age of muscovite plateau at 40Ar/39Ar is 157.2±1.0 Ma,the isochron age is 157.3±1.8 Ma(MSWD=1.20),and the anti-isochron age is 156.0±3.0 Ma(MSWD=19).On the basis of the previous research results,it is concluded that the altered rock type and quartz vein type tungsten polymetallic ore bodies in the mining area is characterized to be in the early Yanshanian period.They are the products of different metallogenic stages of tectonic-magmatic activities in the same period.The conclusion provides chronological support for deepening the age pedigree,metallogenic regularity and prospecting direction of different types of deposits in Chongyi-Dayu-Shangyou ore concentration area.
作者
戴平云
卢友月
程顺波
陈小勇
付建明
张遵遵
DAI Pingyun;LU Youyue;CHENG Shunbo;CHEN Xiaoyong;FU Jianming;ZHANG Zunzun(Wuhan Geological Survey Center,China Geological Survey(Central South China Innovation Center for Geosciences),Wuhan 430205,Hubei,China;Research Center for Petrogenesis and Mineralization of Granitoid Rocks,China Geological Survey,Wuhan 430205,Hubei,China;CAS Key laboratory of Crust-Mantle Materials and Environments,University of Science and Technology of China,Hefei 230026,Anhui,China;Gannan Geological Survey Group,Bureau of Geology and Mineral Resources of Jiangxi Province,Ganzhou 341000,Jiangxi,China)
出处
《中国钨业》
CAS
2021年第1期8-16,共9页
China Tungsten Industry
基金
中国地质调查局地质矿产调查评价专项项目(DD20190154)
国家重点研发计划“深地资源勘查开采”重点专项(2016YFC0600205)。
