高校地质学报2024，Vol.30Issue(6)：694-704,11.DOI:10.16108/j.issn1006-7493.2023072
冀东地区中元古代雾迷山组富锂岩系中锂的赋存状态
The Occurrence State of Lithium in the Middle Mesoproterozoic Wumishan Formation Lithium-rich Rock Series in Eastern Hebei Province
摘要
Abstract
In 2021,Hebei Geological Survey Institute discovered an extraordinary enrichment of lithium in the Middle Mesoproterozoic Wumishan Formation in the eastern Hebei,which is the first time that clay type lithium resources were found in Precambrian strata in China.The lithium-rich rock series has large thickness,wide distribution,stable horizon,Li2O grade of 0.1-0.42 wt%,and has great prospecting potential.As a new lithium-endowed horizon,the occurrence state of lithium is directly related to the exploration and development significance of the clay-type lithium resources discovered this time.By using X-ray diffraction(XRD),thermal analysis(TG-DTG)and Fourier transform infrared spectroscopy(FTIR),it is found that the lithium-rich rocks in the study area are mainly composed of dolomite,quartz and clay minerals such as illite and illite/smectite mixed layers.Through solid state nuclear magnetic resonance spectroscopy,time-of-flight secondary ion mass spectrometry(TOF-SIMS),clay mineral purification and Na ion exchange experiments,it is revealed that the lithium in the Wushan Formation lithium-rich rock series mainly exists in the illite and illite/smectite mixed layers in the form of isomorphic replacement,and a very small amount of lithium exists in the form of ion adsorption between the clay mineral layers or on the surface.The research results provide important theoretical basis and technical support for the selection,metallurgy and exploitation of clay-type lithium resources in eastern Hebei Province in the future.关键词
黏土型锂矿/赋存状态/固体核磁共振谱/离子交换/雾迷山组Key words
clay-type lithium ore/occurrence state/solid state NMR spectroscopy/ion-exchange/Wumishan Formation分类
天文与地球科学引用本文复制引用
耿晓磊,佟昕恩,王瑞琪,李伟,王克冰,蔡元峰,任超,吉世超,王敬朝,高岩峰,汪昱光..冀东地区中元古代雾迷山组富锂岩系中锂的赋存状态[J].高校地质学报,2024,30(6):694-704,11.基金项目
中央引导地方科技发展资金(216Z4201G) （216Z4201G）
河北省自然资源厅科技项目(13000021GM5KG6TOH871W)联合资助 （13000021GM5KG6TOH871W）
