广西向阳坪铀矿床黄铁矿特征及其对矿体延伸的影响

Characteristics of Pyrite and Influence of Ore Body Extension of Xiangyangping Uranium Deposit in Guangxi Province

广西向阳坪铀矿床作为华南地区近年来发现的具有巨大找矿潜力的矿床,多个单位在区内开展了不同工作。研究发现:在本区同样存在着与其他铀矿床相似的黄铁矿与铀成矿联系密切的关系。对研究区内含黄铁矿花岗岩样品采集后,通过光学显微镜、扫描电子显微镜、激光拉曼等分析方法对区内黄铁矿特征进行研究,发现浸染状含砷黄铁矿与铀成矿关系密切,并对黄铁矿的主要化学成分及Fe/(S+As)比值进行分析,结果显示:本区黄铁矿S含量为50.64%~53.73%,平均为51.71%;Fe含量为44.28%~46.97%,平均为45.61%;Fe/S比值平均为0.88,ω(Fe)与ω(S+As)具有负相关关系,以此探究黄铁矿对于向阳坪铀矿床矿体延伸的影响。

The Xiangyangping uranium deposit is a deposit with great prospecting potential discovered in recent years in South China.Many units have carried out different work in the area and conducted more analysis and research.The study also found that there are also Similar pyrites in other uranium deposits are closely related to uranium mineralization.After collecting the samples containing pyrite granite in the study area,the characteristics of pyrite were studied by optical microscopy,scanning electron microscopy,laser Raman analysis and the disseminated arsenic-bearing pyrite and uranium mineralization were found.The main chemical composition and Fe/(S+As)ratio of pyrite are analyzed.The results show that the S content of pyrite in this area is 50.64%~53.73%,with an average of 51.71%;the Fe content is 44.28%~46.97%,the average is 45.61%;the average Fe/S ratio is 0.88,andω(Fe)has a negative correlation withω(S+As)to explore the effect of pyrite on the ore body extension of the Xiangyangping uranium deposit.