便携式XRF在四川盆地含铼矿体快速识别中的应用研究  

Research and application of portable XRF in rapid identification of rheniumbearing ore bodies in Sichuan Basin

作　　者：范俊波 郝雪峰[1] 杨荣[1] 梁斌[3] 彭宇 潘蒙[1] 唐屹[1] FAN Junbo;HAO Xuefeng;YANG Rong;LIANG Bin;PENG Yu;PAN Meng;TANG Yi(Sichuan Geological Survey,Chengdu 610081,Sichuan,China;Sichuan Province Wisdom Geology Big Data co.,Ltd.,Chengdu 610081,Sichuan,China;Southwest University of Science and Technology,Mianyang 621000,Sichuan,China)

机构地区：[1]四川省地质调查院,四川成都610081 [2]四川省智慧地质大数据有限公司,四川成都610081 [3]西南科技大学,四川绵阳621000

出　　处：《矿产勘查》2024年第1期117-126,共10页Mineral Exploration

基　　金：四川省自然资源厅2020年省政府性投资地质勘查(第一批)项目“四川盆地及周边中生代陆相沉积建造中钼、铼等稀有稀散元素资源富集规律基础调查”(DZ202006)资助。

摘　　要：本文介绍了应用便携式XRF荧光分析快速识别技术“鉴定”岩矿石的含铼矿化性及品位,并成功应用于四川盆地(乐山犍为—沐川地区、叙永—古蔺地区、昭觉—普格地区)的铼矿勘查工作中。便携式XRF分析仪虽不能直接分析铼(Re)元素,但可利用其与钼(Mo)、铜(Cu)等共、伴生矿物组合特征,并结合地质等综合特征(最重要的找矿标志)——黑色有机质,可在野外对含矿层位进行快速检测与分析。其中四川盆地中部含矿层主要以铼、钼矿化为主;在东部含矿层主要以铼、钼、铜矿化为主;在南部含矿层主要以铜、铼、银矿化为主,矿床特征有明显差异。通过便携式XRF野外测试结果与室内化学分析结果对比研究,其相对误差可控制在10%以下,验证其方法的有效性。实践证明,针对四川盆地沉积型铼钼矿床,便携式XRF分析技术是一种快速、经济、有效、绿色、间接的找铼手段,它为建立找“铼”标志,及时评价矿点,快速追踪异常源进行找矿预测,加速铼矿资源的勘探利用提供了一种有力的手段。This paper describes the application of portable XRF fluorescence analysis and rapid identification technology to"identify"the mineralizability and grade of rhenium in rocks and ores,which has been successfully applied to the exploration of rhenium deposits in Leshan Qianwei-Muchuan area,Xuyong-Gulin area and Zhaojue-Puge area.Although the portable XRF analyzer cannot analyze rhenium(Re)directly,it can be used for rapid detection and analysis of ore-bearing horizon in the field by combining the combination characteristics of rhenium(Re)with molybdenum(Mo),copper(Cu)and other co-associated minerals,as well as black organic matter,the comprehensive characteristics of geology(the most important prospecting indicator).The ore-bearing strata in central Sichuan Basin are mainly rhenium and molybdenum mineralization.In the east,rhenium,molybdenum and copper are the main ore-bearing layers.Copper,rhenium and silver mineralization are the main ore-bearing strata in the south,and the deposit characteristics are obviously different.By comparing the field test results of portable XRF with the laboratory chemical analysis results,the relative error of the method can be controlled less than 10%,which verifies the effectiveness of the method.Practice has proved that portable XRF analysis technique is a rapid,economic,effective,green and indirect means of rhenium,in view of the Sichuan Basin for sedimentary type molybdenum rhenium bed in the,Besides,it can help to establish the indicators of the rhenium,evaluation of mines in time,fast track the prospecting prediction of the anomalous source,and accelerate the rhenium mineral resources exploration and utilization of providing a powerful tool.

关 键 词：便携式XRF 四川盆地 铼(Re) 快速识别 找矿预测 

分 类 号：P631[天文地球—地质矿产勘探]