摘要
佛子冲铅锌矿床位于南岭成矿带中部南缘、博白-岑溪深断裂带北端。矿体产于奥陶系浅变质钙质碎屑岩和泥质灰岩中,主要受北北东向断层和岩体与地层接触面控制。本文通过对佛子冲铅锌矿床104号矿体中石英、闪锌矿和方解石包裹体均一温度的测定,对硫、铅、氢、氧等同位素的组成研究,以及根据闪锌矿Rb-Sr等时线年龄132±3 Ma,认为佛子冲铅锌矿属于与岩浆期后流体作用有关的燕山期中-高温热液矿床。
Fuzichong Pb-Zn deposit is located in south central of the nanling metallogenic belt and northeast section of the Bobai-Cenxi metallogenic belt.The ore-bodies is occurrence in the Ordovician System shallow deterioration calcareous clastic rock and the argillaceous limestone,mainly be controlled by NNE-trending faults and stratigraphic contact zone with intrusion.Based on the study of geological characteristics,the mineral inclusion characteristic,homogenization temperature,the temperature of mineralsulfur isotope,stable isotopic compositions and the Rb-Sr isochron age of sphalerite of Fuzichong Pb-Zn deposit,concludes that the Fuzichong deposit is formed the medium-to-high temperature hydrothermal environment;the S-Pb-H-O stable isotope composition shows that the ore-forming fluid mainly comes from magmatic hydrothermal systems.Rb-Sr isochron age of sphalerite which is yielded 132±3Ma indicated that Fozichong Pb-Zn deposit formed in Yanshanian and belongs to magmatic-hydrothermal-type deposit.
出处
《华南地质与矿产》
CAS
2012年第2期160-167,共8页
Geology and Mineral Resources of South China
基金
广西国土厅"钦杭带广西段整装勘查部署选区及成矿规律综合研究"
广西华锡集团股份有限公司"广西佛子冲矿田岩浆岩岩石地球化学特征及成岩成矿时代研究"项目资助
关键词
地质特征
包裹体特征
稳定同位素
闪锌矿Rb-Sr测年
佛子冲铅锌矿
广西
geological features
fluid inclusion
stable isotope
Rb-Sr dating of Sphalerite
Fuzichong Pb-Zn deposit,Guangxi province
