CAJ | 학술논문

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。
불자충연자광상위우남령성광대중부남연、박백-잠계심단렬대북단。광체산우오도계천변질개질쇄설암화니질회암중,주요수북북동향단층화암체여지층접촉면공제。본문통과대불자충연자광상104호광체중석영、섬자광화방해석포과체균일온도적측정,대류、연、경、양등동위소적조성연구,이급근거섬자광Rb-Sr등시선년령132±3 Ma,인위불자충연자광속우여암장기후류체작용유관적연산기중-고온열액광상。
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.