鹤庆万松坪峨眉山玄武岩分布区找矿方向探讨  

PROSPECTING ORIENTATION IN THE EMEISHAN BASALT DISTRIBUTION AREA OF WANSONGPING,HEQING

作　　者：朱能刚 杨钦淞 朱丽红 高晓红 肖高强 ZHU Neng-gang;YANG Qin-song;ZHU Li-hong;GAO Xiao-hong;XIAO Gao-qiang(Yunnan Institute of Geological Survey,Kunming 650216;Yunnan Geological Engineering Survey and Design Research Institute Co.,Ltd.,Kunming 650093;Central Lab,Yunnan Exploration and Development Bureau of Geology and Mineral Resources,Kunming 650218;Yunnan Geological Survey,Kunming 650051)

机构地区：[1]云南省地质调查院,云南昆明650216 [2]云南地质工程勘察设计研究院有限公司,云南昆明650093 [3]云南省地质矿产勘查开发局中心实验室,云南昆明650218 [4]云南省地质调查局,云南昆明650051

出　　处：《云南地质》2025年第1期83-86,共4页Yunnan Geology

基　　金：中国地质调查局“云南1:25万丽江幅区域化探”项目(1212011220594)。

摘　　要：云南省1:25万丽江幅区域化探扫面工作,在鹤庆县万松坪峨眉山玄武岩分布区发现1处以Nb为主,伴生La、Y等元素的综合异常。异常查证结果表明,1:5万水系沉积物测量Nb异常面积18.4km^(2),向南未封闭,并伴生La、Y异常;水系沉积物和岩石中Nb含量值均已达铌矿边界品位值,岩石中La、Y两项总和最高值已达到稀土矿边界品位值。对比威宁、宣威一带峨眉山玄武岩铌矿成矿地质背景,该异常同样具备较好的关键金属铌、稀土找矿潜力。Regional geochemical surveys(1:250,000)in the Lijiang area of Yunnan identified a comprehensive anomaly dominated by Nb with associated La and Y in the Emeishan Basalt distribution area of Wansongping,Heqing County.Verification revealed that the 1:50,000 stream sediment survey yielded an unclosed Nb anomaly covering 18.4 km^(2),accompanied by La and Y anomalies.The Nb concentrations in both stream sediments and rocks meet the cutoff grade for Nb deposits,while the sum of La and Y in rocks reach the cutoff grade for rare earth deposits.Comparable to the metallogenic settings of Emeishan Basalt-hosted Nb deposits in Weining and Xuanwei,this anomaly demonstrates significant potential for Nb and rare earth exploration.

关 键 词：峨眉山玄武岩 水系沉积物 铌 稀土 找矿方向 万松坪地区 云南鹤庆 

分 类 号：P618.7[天文地球—矿床学]