巴彦乌拉铀矿床芒来地段铀矿化特征与铀的赋存形式  

Distribution of uranium ore bodies and occurrences characteristics of uranium minerals in Manglai section of Bayanwula uranium deposit

作　　者：刘晓敏 任晓平 朱国明 乔鹏 黄镪俯 李鹏飞 LIU Xiaomin;REN Xiaoping;ZHU Guoming;QIAO Peng;HUANG Qiangfu;LI Pengfei(China Nuclear Inner Mongolia Mining Co.,Ltd.,Hohhot 010020,China;Geological Party No.208,CNNC,Baotou 014010,China)

机构地区：[1]中核内蒙古矿业有限公司,内蒙古呼和浩特010020 [2]核工业二〇八大队,内蒙古包头014010

出　　处：《世界核地质科学》2024年第3期472-482,共11页World Nuclear Geoscience

摘　　要：巴彦乌拉铀矿床是二连盆地开发的第一个砂岩型铀矿床,近几年,在巴彦乌拉铀矿床西部芒来地段寻找可地浸砂岩型铀矿取得了重大突破。在系统分析二连盆地巴彦乌拉铀矿床地质、水文地质特征的基础上,对该矿床西部芒来地段铀矿体分布与铀矿物赋存特征进行了研究。研究结果表明:芒来地段含矿含水层砂体展布较稳定,具有稳定的隔水顶底板,矿体位于赛汉组上段下部辫状河相沉积的河道砂体中,总体呈板状,EW向展布,连续性较好。矿体埋藏深度浅,平米铀量与铀品位总体稳定。铀的存在形式为铀矿物、吸附态铀和含铀矿物,并以铀矿物为主,铀矿物主要以铀的磷酸盐矿物及沥青铀矿为主,偶见铀石、钍石等,这些特征对地浸开发十分有利。The Bayanwula uranium deposit is the first sandstone-type uranium deposit developed in the Erlian basin,and in recent years,a major breakthrough has been made in the search for ground-leachable sandstone-type uranium deposits in the western part of the Bayanwula uranium deposit.Based on the analysis of the geological and hydrogeological characteristics of Bayanwula uranium deposit,the distribution of uranium ore body and uranium mineral occurrence characteristics in the Manglai section of the deposit were studied.The results show that the sand body of the mineral-bearing aquifer in the Manglai section is relatively stable,with a stable waterproof roof and floor,and the ore body is located in the braided fluvial sedimentary sand body in the upper and lower part of the Saihan formation,and the overall east-west spread is plate-like,with good continuity.The ore body has a shallow burial depth,and the amount of uranium and uranium grade per square meter are generally stable.The existence forms of uranium are uranium minerals,adsorbed uranium and uranium-containing minerals,and uranium minerals are the mainstay,uranium minerals are mainly uranium phosphate minerals and bituminous uranium ore,and occasionally uranium stone,thorium,etc.,these characteristics are very favorable for ground leaching development.

关 键 词：芒来地段 铀矿体分布 铀矿物 赋存特征 

分 类 号：P619.14[天文地球—矿床学]