岩石矿物学杂志2025，Vol.44Issue(4)：855-869,15.DOI:10.20086/j.cnki.yskw.2025.4190
江西相山矿田"充填+交代"铀成矿热液演化过程
The uranium mineralization hydrothermal evolution process of"filling to metasomatism"in Xiangshan ore field,Jiangxi Province
摘要
Abstract
Xiangshan ore field in Jiangxi Province is a representative hydrothermal uranium ore field in China.De-scribing the evolution of uranium metallogenic hydrothermal fluid in Xiangshan ore field and exploring its formation mechanism is of great significance for promoting innovation and breakthroughs in the theory of hydrothermal ore de-posit mineralization,and advancing the development of ore deposit studies.However,due to the lack of deep under-standing of the mineralization stage and mineralization dynamics mechanism,the evolution of uranium metallogenic hydrothermal fluid in Xiangshan ore field has been a weak link in the study.This paper discusses the hydrothermal process from filling mineralization to metasomatism mineralization in Xiangshan ore field by redeveloping existing ore analysis data and re-observing the macro and micro phenomena,with hydraulic fracturing uranium mineralization as the main focus.The study shows that the main hydrothermal uranium veins in Xiangshan ore field are composed of filling type mineralization and metasomatism type mineralization.Filling type mineralization has high grade and small scale,with K2O content of 0.88％～7.03％(average 4.03％)and Na2O content of 0.12％～1.09％(average 0.35％),complex associated components,small apatite particles,and fast mineralization rate.Metamorphic type mineralization is low grade and widely distributed,with K2O content of 0.09％～4.50％(average 1.15％),Na2O content of 1.91％～10.01％(average 6.07％),few associated components,good crystallization of apatite,and slow mineralization rate.Uranium mineralization begins with filling type mineralization and ends with metasomatism type min-eralization.The temperature of uranium mineralization does not change much,and the ore-forming pressure and redox potential show a gradual increase process.The ore-forming hydrothermal fluid evolves towards an increase in alkalinity.关键词
充填型铀矿化/交代型铀矿化/形成时序/演化过程/相山铀矿田Key words
filling type uranium mineralization/metasomatism type mineralization/formation of time sequence/evolution process/Xiangshan uranium ore field分类
天文与地球科学引用本文复制引用
张万良,郭福生,魏欣,李余亮..江西相山矿田"充填+交代"铀成矿热液演化过程[J].岩石矿物学杂志,2025,44(4):855-869,15.基金项目
国家自然科学基金项目(42472130) （42472130）
中国核工业地质局地勘费项目(2022-29) （2022-29）
江西省技术创新引导类计划(20212AEI91008) National Natural Science Foundation of China(42472130) （20212AEI91008）
China Nuclear Geology Bureau Geolog-ical Exploration Fund Project(2022-29) （2022-29）
Jiangxi Province Technological Innovation Guidance Program(20212AEI91008) （20212AEI91008）
