摘要
本文旨在对江西省全南县青龙山萤石矿床的地球化学特征及成因进行探讨,通过对青龙山萤石矿区矿石和围岩样品进行稀土元素分析,青龙山萤石矿矿石的∑REE平均含量为88.186×10^(-6),δEu为0.23~0.61,δCe为0.78~0.91;围岩的∑REE平均含量为184.52×10^(-6),δEu为0.31~0.69,δCe为0.85~1,萤石矿石和围岩的稀土元素配分模式具有相似性和同步性,呈轻稀土相对富集的右倾型,Eu中等亏损,Ce弱亏损。矿石与围岩的稀土地球化学研究显示,该萤石矿床至少存在两个成矿期次,为岩浆热液成矿,成矿环境为稳定的较还原条件,成矿流体温度在200℃左右。
This paper aims to discuss the geochemical characteristics and genesis of Qinglongshan fluorite deposit in Quannan County of Jiangxi Province.Rare earth elements of the ore and surrounding rock samples are analyzed for Qinglongshan fluorite deposit.The average content∑REE of Qinglongshan fluorite ores is 88.186×10^(-6),δEu is 0.23-0.61 andδCe is 0.78-0.91.The average content∑REE of the surrounding rocks is 184.52×10^(-6),δEu is 0.31-0.69 andδCe is 0.85-1.REE distribution patterns of fluorite ores and surrounding rocks have similarity and synchronization,showing a right-leaning type of relative enrichment of light rare earth elements with moderate loss of Eu and weak loss of Ce.The rare earth geochemical study result of ore and surrounding rock indicates that there are at least two metallogenic stages in the fluorite deposit,which are magmatic hydrothermal mineralization.The mineralization environment is a stable and relatively reducing condition,and the temperature of the ore-forming fluid is about 200℃.
作者
杨洲畬
叶发
YANG Zhoushe;YE Fa(Geological Brigade No.7 of Jiangxi Geological Bureau,Ganzhou 341000,Jiangxi,China)
出处
《矿产与地质》
2024年第1期106-113,共8页
Mineral Resources and Geology
基金
江西省地质局(原江西省地质矿产勘查开发局)科研项目“江西省萤石矿成矿规律及开发利用研究”(2014-2021年)资助。
关键词
青龙山萤石矿
稀土元素
地球化学特征
江西全南
Qinglongshan fluorite deposit
rare earth elements
geochemical characteristics
Quannan County of Jiangxi
