ISSN 1006-3021 CN11-3474/P
Published bimonthly started in 1979
中国稀土元素地球化学背景与远景区优选
  
关键词:rare earth elements (REEs)  geochemical background  anomaly  spatial distribution  potential targets
基金项目:国家重点研发计划项目“穿透性地球化学勘查技术”(编号: 2016YFC0600600);国家专项“深部探测技术与实验研究”(编号: SinoProbe-04);中国地质调查局地质调查项目(编号: DD20190451)
作者单位E-mail
王学求 自然资源部地球化学探测重点实验室, 中国地质科学院地球物理地球化学勘查研究所
联合国教科文组织全球尺度地球化学国际研究中心 
wangxueqiu@igge.cn 
周建 自然资源部地球化学探测重点实验室, 中国地质科学院地球物理地球化学勘查研究所
联合国教科文组织全球尺度地球化学国际研究中心 
 
迟清华 自然资源部地球化学探测重点实验室, 中国地质科学院地球物理地球化学勘查研究所
联合国教科文组织全球尺度地球化学国际研究中心 
 
王玮 自然资源部地球化学探测重点实验室, 中国地质科学院地球物理地球化学勘查研究所
联合国教科文组织全球尺度地球化学国际研究中心 
 
张必敏 自然资源部地球化学探测重点实验室, 中国地质科学院地球物理地球化学勘查研究所
联合国教科文组织全球尺度地球化学国际研究中心 
 
聂兰仕 自然资源部地球化学探测重点实验室, 中国地质科学院地球物理地球化学勘查研究所
联合国教科文组织全球尺度地球化学国际研究中心 
 
刘东盛 自然资源部地球化学探测重点实验室, 中国地质科学院地球物理地球化学勘查研究所
联合国教科文组织全球尺度地球化学国际研究中心 
 
徐善法 自然资源部地球化学探测重点实验室, 中国地质科学院地球物理地球化学勘查研究所
联合国教科文组织全球尺度地球化学国际研究中心 
 
吴慧 自然资源部地球化学探测重点实验室, 中国地质科学院地球物理地球化学勘查研究所
联合国教科文组织全球尺度地球化学国际研究中心 
 
高燕芳 自然资源部地球化学探测重点实验室, 中国地质科学院地球物理地球化学勘查研究所
联合国教科文组织全球尺度地球化学国际研究中心 
 
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摘要:
Geochemical Background and Distribution of Rare Earth Elements in China: Implications for Potential Prospects
      Rare earth elements (REEs) are widely used in high-tech industries and are categorized into the list of critical metals by many countries. Geochemistry is an effective method for studying the concentration and distribution of REEs and discovering rare earth deposits. However geochemical data of REEs are not available in the world because most of geochemical mapping projects have not analyzed the REEs. This has greatly restricted the understanding of the spatial distribution and exploration for REEs in the world. In this paper, the concentration and spatial distribution of REEs were systematically described for the first time by using the data obtained from the Mapping Chemical Earth Program-China Geochemical Baselines (CGB) project and the Belt and Road Geochemical Mapping Project. Geochemical background values of ΣLREE, ΣHREE and ΣREE in rocks are 121 μg/g, 35.0 μg/g, 157 μg/g respectively, and the ratio of ΣLREE to ΣHREE in rocks is 0.35. Geochemical background values of ΣLREE, ΣHREE and ΣREE in catchment sediments are 134.0 μg/g, 38.5 μg/g and 173 μg/g respectively, and the ratio of ΣLREE to ΣHREE in rocks is 0.35. The background concentrations of REE in sediments are consistent with those in rocks. A total of 35 anomalies were delineated. Among these anomalies, 26 geochemical anomalies are consistent with the known REE deposits, whereas newly discovered 9 anomalies are spatially distributed in Urad Middle Banner-Urad Rear Banner of Inner Mongolia, enrichment areas of Southern China, Songpan–Garze–Panxi rift, China–Vietnam boundary area, China–Myanmar boundary area, western part of Kunlun Mountains, Tarlung Zangbo River, Zhada County of Tibet, and east part of Guizhou Province. The anomalies show potential targets for the follow-up exploration of the REE deposits of Bayan Obo type, carbonite-alkali-related type, ion-adsorbed type, granite pegmatite type, sedimentary clay type, and sedimentary phosphate type.
WANG Xue-qiu,ZHOU Jian,CHI Qing-hua,WANG Wei,ZHANG Bi-min,NIE Lan-shi,LIU Dong-sheng,XU Shan-fa,WU Hui,GAO Yan-fang.2020.Geochemical Background and Distribution of Rare Earth Elements in China: Implications for Potential Prospects[J].Acta Geoscientica Sinica,41(6):747-758.
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