平庄盆地黑水地区砂岩型铀矿层间氧化带特征与铀矿化关系  

Characteristics of interlayer oxidation zones of sandstone type uranium deposits in the Heishui area of the Pingzhuang Basin and their relationship with uranium mineralization

作　　者：王生文 董方升 张松 WANG Sheng-wen;DONG Fang-sheng;ZHANG Song(Liaoning Geological Group Energy Geology Co.,Ltd.,Shenyang 110000,Liaoning)

机构地区：[1]辽宁省地矿集团能源地质有限责任公司,辽宁沈阳110000

出　　处：《世界有色金属》2024年第2期67-70,共4页World Nonferrous Metals

基　　金：辽宁省省级地质勘查项目“辽宁铁法-昌图盆地砂岩型铀矿地质调查(续作)(JH22-210000-15694)”资助。

摘　　要：近年来,在平庄盆地北部黑水地区砂岩型铀矿地质调查工作中,已发现多个工业孔及低品位铀矿化孔,表明该地区具有较好的铀成矿前景。该地区铀矿赋矿层位为孙家湾组上段,铀矿化与层间氧化带的发育特征密切相关。文章通过岩心观察、地质剖面、地球化学指标参数分析手段,分析了该区的氧化带空间分布特征、岩石地球化学类型、氧化带与铀矿化关系。研究认为该区的砂岩型铀矿受层间氧化带控制显著,氧化带的分带特征明显,平面上铀矿体分布于氧化还原过渡带内,垂向上分布于氧化带与还原带接触部位,铀矿体的形成与岩石地球化学环境密切相关。In recent years,multiple industrial and low-grade uranium mineralization pores have been discovered in the geological survey of sandstone type uranium deposits in the Heishui area of the northern Pingzhuang Basin,indicating that the area has good uranium mineralization prospects.The uranium deposit in this area is located in the upper part of the Sunjiawan Formation,and uranium mineralization is closely related to the development characteristics of interlayer oxidation zones.The article analyzes the spatial distribution characteristics of oxidation zones,rock geochemical types,and the relationship between oxidation zones and uranium mineralization in the area through core observation,geological profiles,and geochemical parameter analysis.Research suggests that the sandstone type uranium deposits in this area are significantly controlled by interlayer oxidation zones,and the zoning characteristics of the oxidation zones are obvious.On the plane,uranium ore bodies are distributed in the oxidation-reduction transition zone,and vertically,they are distributed at the contact area between the oxidation zone and the reduction zone;The formation of uranium ore bodies is closely related to the geochemical environment of rocks.

关 键 词：平庄盆地 黑水地区 砂岩型铀矿 层间氧化带 铀矿化 

分 类 号：P619.1[天文地球—矿床学]