豫西嵩县南部萤石矿床放射性特征及其找矿意义  

Radioactive characteristics and prospecting significance of fluorite deposits in Southern Song County of Western Henan Province

作　　者：刘培源[1,2] 李志娟 桑家福 赵理政 铁文利 LIU Peiyuan;LI Zhijuan;SANG Jiafu;ZHAO Lizheng;TIE Wenli(The First Institute of Geology Exploration of Henan Province Bureau of Geo-exploration and Mineral Development,Zhengzhou 450001,Henan,China;Henan Institute of Geological Serve,Zhengzhou 450001,Henan,China)

机构地区：[1]河南省地质矿产勘查开发局第一地质勘查院,河南郑州450001 [2]河南省地质调查院,河南郑州450001

出　　处：《矿产勘查》2024年第6期1015-1024,共10页Mineral Exploration

基　　金：嵩县萤石资源整合项目(嵩政文[2009]100号)资助。

摘　　要：中国是全球最大的萤石消费国,随着航天、半导体、通讯等领域的快速发展,萤石矿的消费量及价格呈逐年上升趋势,其稀缺性和战略重要性日益提高,近几年萤石矿的勘查和开发力度亦在加大,但现阶段萤石矿勘查主要还是利用填图、工程等手段。本研究选取了嵩县南部4个代表性强的萤石矿床,利用伽马能谱仪对不同岩性的放射性进行测量,识别萤石矿床的放射性特征,圈定放射性异常带(点),结果显示各类岩性的γ射线辐射强度值为5.54~68.54μR/h,U、Th、K和总量Tc含量分别为3.1×10^(-6)~30.1×10^(-6)、12.1×10^(-6)~90.1×10^(-6)、0.1%~8.7%、13.0×10^(-6)~99.3×10^(-6)。研究认为,不同岩性以及不同类型萤石矿石之间的放射性特征存在规律性,其放射性异常带(点)和萤石矿的位置一致性较好,萤石矿体的放射强度较围岩均表现为低值异常的特征,其中Th元素的异常表现最具稳定性。因此,通过测量不同岩性的放射性差异,可有效地指示萤石矿体位置等信息,为萤石矿找矿勘查提供新的工作思路和方法。China is the largest consumer of fluorite in the world.With the rapid development of aerospace,semiconductor,communication and other fields,the consumption and price of fluorite are on the rise by years,and its scarcity and strategic importance are increasingly improving.In recent years,the exploration and development efforts of fluorite mine have also enhanced,however,at present,the exploration of fluorite mine mainly makes use of these methods,which are like mapping and engineering etc.This research,selected four representative fluorite deposits in the southern part of Song County as experimental subjects,utilized the gamma ray spectrometers to measure the radioactivity of different types of rocks,identified and studied the radioactive characteristics of fluorite deposits,and then,delineates the zones(points)of radioactive anomalies.It can provide new ideas and methods for the exploration of fluorite deposits of the same type.The results show that theγ-ray radiation intensity data that has different types of rocks,ranges from 5.54 to 68.54;The content of elements U,Th,K,and Tc(total element)respectively range from 3.1×10^(-6)to 30.1×10^(-6),12.1×10^(-6)to 90.1×10^(-6),0.1%to 8.7%,and 13.0×10^(-6)to 99.3×10^(-6).Research thinks that there is the regularity in the radioactive characteristics among different types of fluorite ores.As follows,there is a good consistency between the location of radioactive anomaly zones(points)and fluorite ores,the radiation intensity of the fluorite ore body is characterized by the low data anomalies compared to the surrounding rock,and Th element anomaly is the most stable.Therefore,measuring the differences in radioactive characteristics of the different types of rocks can effectively find out the information of the location of fluorite ore body,which provides some new work ideas and methods for fluorite ore exploration.

关 键 词：萤石矿 放射性 辐射强度 伽马能谱 嵩县 

分 类 号：P624.6[天文地球—地质矿产勘探]