青海茶卡北山锂铍矿勘查区X射线荧光异常特征及找矿意义  

X-ray fluorescence anomalies in the Chakabeishan exploration area for lithium-beryllium deposits,Qinghai Province:Characteristics and implications for prospecting

作　　者：王亚栋[1] 周四春 刘晓辉 胡波 王广西[2] 徐云甫[1] 曹红亮 樊新胜 韩若浦 WANG Ya-Dong;ZHOU Si-Chun;LIU Xiao-Hui;HU Bo;WANG Guang-Xi;XU Yun-Fu;CAO Hong-Liang;FAN Xin-Sheng;HAN Ruo-Pu(Key Laboratory of the Northern Qinghai-Tibet Plateau Geological Processes and Mineral Resources,Qinghai Geological Survey Institute,Xining810012,China;Applied Nuclear Technology in Geosciences Key Laboratory of Sichuan Province,Chengdu University of Technology,Chengdu610059,China)

机构地区：[1]青海省地质调查院青藏高原北部地质过程与矿产资源重点实验室,青海西宁810012 [2]成都理工大学地学核技术四川省重点实验室,四川成都610059

出　　处：《物探与化探》2023年第6期1635-1642,共8页Geophysical and Geochemical Exploration

基　　金：青海省基础研究计划项目(2022-ZJ-751);国家重点研发计划项目(2017YFC0602701)。

摘　　要：在青海省乌兰县茶卡北山勘查区开展了土壤X射线荧光测量勘查伟晶岩锂铍矿的研究,结果表明,通过测量Ca、Ni、Mn、Fe以及Nb、Ta、Rb、K两组指示元素,可以准确捕获花岗伟晶岩锂铍矿形成的土壤次生晕。其中,第一组元素的X射线荧光异常信息用于指示含矿层位花岗伟晶岩的位置,第二组元素的X射线荧光异常则用于圈定具有矿化显示的伟晶岩脉的位置、走向及其在平面上的延伸范围。根据捕获的X射线荧光异常推测,勘查区主矿脉沿西北、东南两个方向还有较大延伸,该结论为下一步找矿工作提供了参考。The research on exploring pegmatite-type lithium-beryllium deposits through soil X-ray fluorescence measurements was con-ducted in the Chakabeishan exploration area of Ulan County,Qinghai Province.The results demonstrate that soil secondary halos formed by granite pegmatite-type lithium-beryllium deposits can be accurately captured by measuring two groups of indicator elements,i.e.,Ca,Ni,Mn,Fe,and Nb,Ta,Rb,K.The X-ray fluorescence anomalies of the first group of elements indicate the position of the ore-hosting horizon(i.e.,granitic pegmatites).Those of the second group of elements are used to determine the location,strike,and planar extension range of the pegmatite veins with mineralization manifestation.As inferred from the captured X-ray fluorescence a-nomalies,the main ore veins in the exploration area exhibit significant extensions along the northwest and southeast directions.This conclusion provides a reference for further prospecting work.

关 键 词：手提式X荧光仪 土壤X射线荧光测量 茶卡北山 花岗伟晶岩锂铍矿 

分 类 号：P632[天文地球—地质矿产勘探]