| 尹永朋,赵天林,田亮,李名,魏安军.二连盆地额仁淖尔凹陷砂岩型铀矿元素地球化学特征[J].矿产勘查,2021,12(9):1940-1946 |
| 二连盆地额仁淖尔凹陷砂岩型铀矿元素地球化学特征 |
| Element geochemistry characteristics of sandstone-type uranium deposits in the Erennur sag, Erlian Basin |
| 投稿时间：2020-08-10 |
| DOI： |
| 中文关键词: 二连盆地 额仁淖尔凹陷 砂岩型铀矿 元素地球化学 地质调查工程 |
| 英文关键词: Erlian basin Erennur sag sandstone type uranium deposit geochemistry geological survey engineering |
| 基金项目:本文受中国石油天然气股份有限公司华北油田分公司专题科研项目“二连盆地华北探区铀矿重点区带勘查评价部署研究”(HBYT-2019-JS-263)、中国地质调查局项目(DD20190121-03)资助。 |
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| 中文摘要: |
| 额仁淖尔凹陷近期发现的砂岩型铀矿床反映了该区具有砂岩型铀矿找矿潜力。本文通过该区不同岩性常量元素与稀土元素分布规律的研究，揭示了额仁淖尔凹陷砂岩型铀矿元素地球化学特征，探讨了该区元素地球化学与铀成矿的关系。额仁淖尔凹陷内铀成矿作用与FeO、CaO、MgO和烧失量关系密切；稀土元素具有分区分带性，由氧化砂岩中迁出，在含矿砂岩中局部沉淀富集，形成较大的含量差异；轻重稀土的分异程度与氧化作用有关。以上特征可作为该地区铀矿勘查地球化学标志。 |
| 英文摘要: |
| The recent discovery of sandstone-type uranium deposits in Erennur sag re.ects the prospecting potential of sandstone-type uranium deposits in this area. Based on the study of the distribution of major elements and rare earth elements (REE) of the di.erent lithology in Erennur sag, Erlian basin, this paper reveals the element geochemical characteristics of sandstone type uranium deposits in Erennur sag, and explores the relationship between element geochemistry and uranium mineralization in this area.The results show that the uranium mineralization is closely related to FeO, CaO, MgO and loss on ignition. Rare earth elements have the characteristics of zoning and migration from oxidized sandstone and local precipitation and enrichment in ore bearing sandstone. The degree of di.erentiation of LREE and HREE is related to oxidation. These characteristics can be used as the geochemistry of uranium exploration in this area. |
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