二连盆地芒来铀矿床铀镭平衡系数特征研究

doi:10.11720/wtyht.2025.1314

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Abstract

The uranium-radium (U-Ra) equilibrium coefficient is a significant correction parameter for the resource and reserve estimation of in situ leached (ISL) sandstone uranium deposits, directly influencing the accuracy and scientificity of such estimations. Employing a high-purity germanium gamma-ray spectrometer, this study determined the U and Ra contents of 1 431 samples from the Manglai uranium deposit in the Erlian Basin, yielding U-Ra equilibrium coefficients for these samples. Statistical analyses were performed on the U-Ra equilibrium coefficients in terms of frequency distribution, U content, grain size, lithology, and spatial distribution, to explore the primary factors influencing the changes in U-Ra equilibrium coefficients and their implications. The results indicate that the Manglai uranium deposit showed a U-Ra equilibrium coefficient of 0.85, suggesting that the deposit is significantly richer in U. The U-Ra equilibrium coefficient was negatively correlated with U's concent and grade. Additionally, the U-Ra equilibrium coefficient exhibited distinct vertical zoning within ore bodies. Within uranium-mineralized sand bodies, the most favorable grain sizes were observed in sandy conglomerates, coarse- and fine-grained sandstones. The presence of grayish-black and dark black mudstones contributed to uranium enrichment and mineralization in adjacent mineralized sand bodies. The block I-1 in the southern main ore body exhibits significant uranium enrichment potential and the highest U enrichment degree. The uranium deposit is overall richer in U, with almost no Ra-richer zones, indicating that the uranium deposit experienced minimal oxidative transformation after its formation. The results of this study provide a scientific basis for the subsequent construction arrangement of in situ leaching at the Manglai uranium deposit while contributing to a deeper understanding of the deposit's mineralization regularity.

Key words： Manglai uranium deposit uranium and radium samples U-Ra equilibrium coefficient U-richer U enrichment

Received: 25 July 2024 Published: 23 October 2025

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	Pan XIONG
	Wei WANG
	Yan-Wei QIN
	Peng LI
	Ming-Xin CHEN
	Hao-Yu TIAN
	Bo LIU

Cite this article:

Pan XIONG,Wei WANG,Yan-Wei QIN, et al. Characteristics of U-Ra equilibrium coefficients in the Manglai uranium deposit, Erlian Basin[J]. Geophysical and Geochemical Exploration, 2025, 49(5): 1080-1089.

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https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2025.1314 OR https://www.wutanyuhuatan.com/EN/Y2025/V49/I5/1080

Schematic diagram of structural units in Erlian Basin (a) and Manit Depression (b)

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1—oxidized sand body; 2—grey sand body; 3—uranium ore body; 4—exploration line and number; 5—block ore body number; 6—mudstone; 7—siltstone; 8—gravel bearing fine sandstone; 9—gravel bearing sandstone; 10—gravel bearing coarse sandstone; 11—sandy conglomerate; 12—inconsistent stratigraphic angle; 13—quantitative gamma logging curve; 14—three lateral apparent resistivity logging curve
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The planar distribution of the Manglai uranium deposit (a) and the braided river sedimentary of the upper section of the Saihan Formation (b) (modified according to reference [10])
1—oxidized sand body; 2—grey sand body; 3—uranium ore body; 4—exploration line and number; 5—block ore body number; 6—mudstone; 7—siltstone; 8—gravel bearing fine sandstone; 9—gravel bearing sandstone; 10—gravel bearing coarse sandstone; 11—sandy conglomerate; 12—inconsistent stratigraphic angle; 13—quantitative gamma logging curve; 14—three lateral apparent resistivity logging curve

Geological profile map of B1205 line ore body in the southern part of Manglai uranium deposit
1—Irding Manha Formation; 2—upper section of Saihan Formation; 3—lower section of Saihan group; 4—inconsistent stratigraphic angle; 5—lithological boundary; 6—gray sand body; 7—oxidation sand body; 8—mudstone layer; 9—uranium ore body; 10—mineralized body; 11—quantitative gamma logging curve,γ/(nC·kg^-1·h^-1); 12—three lateral apparent resistivity logging curve,LL₃/(Ω·m)

Frequency distribution histogram of uranium radium equilibrium coefficient of Manglai uranium deposit samples

Statistical analysis results of uranium radium equilibrium coefficient of Manglai uranium deposit

Density distribution curve of uranium radium equilibrium coefficient of samples

Uranium radium equilibrium coefficients for uranium content in different grade ranges

Relationship between uranium radium equilibrium coefficient and uranium content in ore

Relationship between uranium radium equilibrium coefficient and particle size change

Uranium radium equilibrium coefficients of samples with different particle sizes

Frequency distribution map of uranium radium equilibrium coefficient in rocks of different mineralization types

Uranium and radium equilibrium coefficients for samples of different mineralization types

Statistical results of uranium and radium equilibrium coefficients in each block of the deposit

Changes in uranium and radium equilibrium coefficients of each block of the ore body

Contour map of uranium content per square meter in the I-1 ore body of the Manglai uranium deposit

WTZK15-7-1 histogram and schematic diagram of core photos
1—mudstone; 2—siltstone; 3—fine sandstone; 4—sandstone with gravel; 5—gravel bearing coarse sandstone; 6—sandy conglomerate; 7—kaolinization; 8—brown iron mineralization; 9—carbonized plant debris; 10—pyrite; 11—lateral resistivity logging curve; 12—quantitative gamma logging curve

[1]	刘波, 杨建新, 秦彦伟, 等. 二连盆地中东部赛汉组古河谷砂岩型铀矿床控矿成因相研究[J]. 地质与勘探, 2016, 52(6):1037-1047.
[1]	Liu B, Yang J X, Qin Y W, et al. Research on the ore-controlling genetic facies of the sandstone type uranium deposits in the paleovalley of Saihan formation of the Erlian Basin[J]. Geology and Exploration, 2016, 52(6):1037-1047.
[2]	齐天骄, 李西得, 刘旭, 等. 二连盆地芒来铀矿赋矿砂岩地球化学特征[J]. 铀矿地质, 2020, 36(5):362-372.
[2]	Qi T J, Li X D, Liu X, et al. Geochemical characteristics of the host sandstone of the Manglai uranium deposit in the Erlian Basin[J]. Uranium Geology, 2020, 36 (5):362-372.
[3]	杨崇根. 二连盆地芒来铀矿床岩石地球化学特征及矿床成因探讨[D]. 抚州: 东华理工大学, 2021.
[3]	Yang C G. Petrogeochemical characteristics and genesis of Manglai uranium deposit in Erlian Basin[D]. Fuzhou: East China Institute of Technology, 2021.
[4]	张明瑜. 钱家店铀矿床U-Ra平衡系数特征研究[J]. 铀矿地质, 2004, 20(6):365-369.
[4]	Zhang M Y. Study on the U-Ra equilibrium coefficient characteristics of the Qianjiadian uranium deposit[J]. Uranium Geology, 2004, 20 (6):365-369.
[5]	李勇, 张凯, 潘洪松, 等. 内蒙古巴仁扎拉格801矿床铀—镭平衡系数特征研究[J]. 世界核地质科学, 2018, 35(3):150-153,179.
[5]	Li Y, Zhang K, Pan H S, et al. Study on characteristics of uranium-radium equilibrium coefficient in Barenzhalage 801 mine,Inner Mongolia[J]. World Nuclear Geoscience, 2018, 35(3):150-153,179.
[6]	夏彧, 周恳恳, 伍皓, 等. 龙川江盆地团田地区砂岩型铀矿U-Ra平衡系数特征及其地质意义[J]. 世界核地质科学, 2018, 35(2):92-97.
[6]	Xia Y, Zhou K K, Wu H, et al. Study on U-Ra equilibrium coefficient of sandstone type uranium deposits in Tuantian,Longchuanjiang Basin[J]. World Nuclear Geoscience, 2018, 35(2):92-97.
[7]	苗辰若. 伊犁盆地阔斯加尔地区西山窑组上段铀—镭平衡系数特征及其地质意义[J]. 东华理工大学学报:自然科学版, 2022, 45(4):390-400.
[7]	Miao R C. Characteristics and geological significance of the uranium radium equilibrium coefficient in the upper section of the Xishanyao Formation in the Kuisgar area of the IIi Basin[J]. Journal of Donghua University of Technology:Natural Science Edition, 2022, 45 (4):390-400.
[8]	夏毓亮, 修群业, 韩军, 等. 地浸砂岩型铀矿床铀—镭平衡系数研究及其地质意义[J]. 铀矿地质, 2013, 29(2):93-98.
[8]	Xia Y L, Xiu Q Y, Han J, et al. Study on U-Ra equilibrium coefficient of the in situ leaching sandstonetype uranium deposits:A case study of Qianjiadian uranium deposit[J]. Uranium Geology, 2013, 29(2):93-98.
[9]	封志兵, 聂逢君, 夏菲, 等. 砂岩型铀矿的矿体形态特征及其成因探讨[J]. 铀矿地质, 2021, 37(6):981-990.
[9]	Feng Z B, Nie F J, Xia F, et al. Discussion on the shapes and their genesis of ore body in sandstone-type uranium deposits[J]. Uranium Geology, 2021, 37(6):981-990.
[10]	王伟, 武正乾, 熊攀, 等. 基于克里格法刻画砂岩型铀矿U、Ra和U-Ra平衡系数垂向分布规律——以二连盆地芒来铀矿床为例[J]. 地质与勘探, 2024, 60(2):236-243.
[10]	Wang W, Wu Z Q, Xiong P, et al. Vertical distribution patterns of the U,Ra and U-Ra equilibrium coefficient for sandstone uranium ores based on the Kriging method:An example from the Manglai uranium deposit in Erlian Basin[J]. Geology and Exploration, 2024, 60(2):236-243.
[11]	李运祓, 赵元洪, 童纯涵, 等. 放射性勘探方法[M]. 北京: 原子能出版社,1978.
[11]	Li Y F, Zhao Y H, Tong C H, et al. Radioactive exploration methods[M]. Beijing: Atomic Energy Press,1978.
[12]	徐式朴. 我国铀矿床放射性平衡系数的变化特征[J]. 铀矿地质, 1983, 8(2):57-60.
[12]	Xu S P. Characteristics of changes in the radioactive equilibrium coefficient of uranium deposits in China[J]. Uranium Geology, 1983, 8 (2):57-60.
[13]	章晔, 华荣洲, 石柏慎. 放射性方法勘查[M]. 北京: 原子能出版社,1990.
[13]	Zhang Y, Hua R Z, Shi B S. Radioactive method exploration[M]. Beijing: Atomic Energy Press,1990.
[14]	李强, 黄宝峰. 铀—镭平衡系数的算法研究[J]. 河南理工大学学报:自然科学版, 2010, 29(S1):28-30,36.
[14]	Li Q, Huang B F. Study on the algorithm of uranium radium equilibrium coefficient[J]. Journal of Henan Polytechnic University:Natural Science, 2010, 29(S1):28-30,36.
[15]	李继安, 周伟. 十红滩铀矿床北带铀—镭平衡系数计算及特征研究[J]. 铀矿地质, 2013, 29(5):296-300.
[15]	Li J A, Zhou W. Research on the calculation of uranium and radium equilibrium coefficient and its characteristics in the north belt of Shihongtan uranium deposit[J]. Uranium Geology, 2013, 29(5):296-300.
[16]	黄建国, 杨亚新. 砂岩型铀矿铀镭及镭氡平衡系数研究[D]. 南昌: 东华理工大学, 2017.
[16]	Huang J G, Yang Y X. Research on the equilibrium coefficients of uranium radium and radium radon in sandstone type uranium deposits[D]. Nanchang: Donghua University of Technology, 2017.
[17]	国家国防科技工业局. EJ/T 1094—2018铀镭平衡系数测定规程[S]. 北京: 核工业标准化研究所, 2018.
[17]	State Administration of Science,Technology and Industry for National Defense. EJ/T 1094—2018 Determination regulations for uranium radium equilibrium coefficient[S]. Beijing: Institute of Nuclear Industry Standardization, 2018.
[18]	黄镪俯, 熊攀, 任晓平, 等. 内蒙古苏尼特左旗巴彦乌拉铀矿床芒来铀矿床勘查地质报告[R]. 核工业二〇八大队, 2018.
[18]	Huang Q F, Xiong P, Ren X P, et al. Geological report on exploration of Manglai uranium deposit in Bayanwula uranium deposit,Sunite Left Banner,Inner Mongolia[R]. Geologic Party No.208,CNNC, 2018.
[19]	熊攀. 二连盆地芒来铀矿床镭氡平衡系数研究[J]. 铀矿冶, 2024, 43(1):12-19.
[19]	Xiong P. Study on the radon balance coefficient of Manglai uranium deposit in the Erlian Basin[J]. Uranium Mining and Metallurgy, 2024, 43 (1):12-19.
[20]	尹明, 李家熙. 岩石矿物分析[M] .4版. 北京: 地质出版社, 2011.
[20]	Yin M, Li J X. Rock mineral analysis[M]. 4th ed. Beijing: Geological Publishing House, 2011.
[21]	陈霜, 王浩锋, 刘波, 等. 巴音戈壁盆地塔木素铀矿床铀—镭平衡系数研究及其地质意义[J]. 东华理工大学学报:自然科学版, 2022, 45(4):355-362.
[21]	Chen S, Wang H F, Liu B, et al. Research on uranium-radium balance coefficient of tamusu uranium deposit in Bayingebi Basin and its geological significance[J]. Journal of East China University of Technology:Natural Science, 2022, 45(4):355-362.
[22]	熊攀, 吴金钟, 黄锵俯, 等. 泥岩夹层在巴彦乌拉铀矿床铀成矿作用中的意义[C]// 中国核学会学术年会论文集(五), 2017.
[22]	Xiong P, Wu J Z, Huang Q F, et al. The significance of mudstone interlayers in uranium mineralization in the Bayannula uranium deposit[C]// Proceedings of the Annual Conference of the Chinese Nuclear Society (5),2017.
[23]	张锦由. U-Ra平衡系数的表达式及其应用[J]. 铀矿地质, 1987, 3(6):374-379.
[23]	Zhang J Y. The expression and application of U-Ra equilibrium coefficient[J]. Uranium Geology, 1987, 3 (6):374-379.
[24]	蒋喆, 韩效忠, 胡航, 等. 二连盆地恩格日音砂岩型铀矿床U-Ra平衡特征、影响因素及其地质意义[J]. 中国煤炭地质, 2022, 34(10):37-43.
[24]	Jiang Z, Han X Z, Hu H, et al. U-Ra equilibrium characteristics,influencing factors,and geological significance of the Enge Riyin sandstone type uranium deposit in the Erlian Basin[J]. Coal Geology of China, 2022, 34 (10):37-43.
[25]	刘国安, 乔鹏, 康世虎, 等. 二连盆地芒来矿床砂体的非均质性与铀成矿关系研究[J]. 铀矿地质, 2020, 36(5):373-381.
[25]	Liu G A, Qiao P, Kang S H, et al. Study on the relationship between heterogeneity of sand bodies and uranium mineralization in the Manglai deposit of the Erlian Basin[J]. Uranium Geology, 2020, 36 (5):373-381.
[26]	王大钊, 冷成彪, 秦朝建, 等. 铀的地球化学性质与成矿作用[J]. 大地构造与成矿学, 2022, 46(2):282-302.
[26]	Wang D Z, Leng C B, Qin C J, et al. Geochemical properties and mineralization of uranium[J]. Geotectonics and Metallogeny, 2022, 46 (2):282-302.