土壤地球化学测量在临沧蚂蚁堆稀土找矿中的应用  

APPLICATION OF SOIL GEOCHEMICAL SURVEY IN RARE EARTH PROSPECTING IN MAYIDUI,LINCANG

作　　者：包大林 官斌 杨宇 李梦云 BAO Da-lin;GUAN Bin;YANG Yu;LI Meng-yun(No.209 Geological Brigade of Yunnan Nuclear Industry,Kunming 650032;Yunnan Exploration-Assessment and Study Center of Three Rare Mineral Resources,Kunming 650032)

机构地区：[1]云南省核工业二〇九地质大队,云南昆明650032 [2]云南省三稀矿产资源勘查评价工程研究中心,云南昆明650032

出　　处：《云南地质》2025年第1期87-91,共5页Yunnan Geology

基　　金：2022年度云南省地质勘查基金项目-云南省临沧市蚂蚁堆地区稀土矿产资源调查评价(K202103)。

摘　　要：基于临沧蚂蚁堆地区土壤地球化学测量,探讨其在稀土找矿中的作用。土壤样品稀土含量相对黑云母二长花岗岩母岩有富集,具轻中稀土富集,重稀土亏损的特征,轻中稀土元素分异现象明显,Ce元素富集。钻孔数据显示稀土矿体有利见矿部位为背景值区附近,偏向低背景值区方向,连续的背景值区域见矿效果最好。初步提出在物源良好地段控矿要素为有利的化学障部位。The role of soil geochemical survey in Mayidui,Lincang,in rare earth prospecting was explored in this study.Therare earth element(REE)contents in soil samples are enriched compared with the biotite monzogranite,and show characteristics of light and medium REE enrichment and heavy REE depletion.Datafrom drill holes indicate that the favorable ore-forming sites are near the background value areas.We initially proposed that the ore-controlling factor in areas with good provenance is the favorable chemical barrier site.

关 键 词：稀土矿 土壤地球化学测量 成矿模式 临沧花岗岩体 云南临沧 

分 类 号：P618.7[天文地球—矿床学]