ISSN 1006-3021 CN11-3474/P
Published bimonthly started in 1979
冀北火山岩型铀矿地球化学评价指标研究
  
关键词:volcanic type uranium deposit  geochemical indicator  northern Hebei
基金项目:河北省地质矿产局科研项目(编号: 冀地地审[2015]30号);国家重点研发计划“穿透性地球化学勘查技术”(编号: 2016YFC0600600)
作者单位E-mail
师淑娟 河北省地球物理勘查院 shishujuan1113@sina.com 
王学求 自然资源部地球化学探测技术重点实验室, 中国地质科学院地球物理地球化学勘查研究所  
李冉 河北省地球物理勘查院  
丁赛 河北省地球物理勘查院  
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摘要:
Geochemical Indicators for Volcanic-type Uranium Deposits in Northern Hebei Province
      North Hebei is a favorable area in search for volcanic-rock type uranium ore deposits. This study combined the regional geochemical data and local data of 460 and 534 uranium ore deposits so as to establish regional geochemical evaluation indicators of the volcanic type uranium deposits and provide guidance for the evaluation of uranium deposits in this area. Uranium deposits are hosted in volcanic rocks with high background of U (8.9×10–6~13.5×10–6), Th (37×10–6~48×10–6), SiO2 (75%~80%) and K2O (5%~6%) and with low background of Fe2O3, MgO, Na2O and Sr. Uranium is concentrated in coarse grain fraction (–4~+20 mesh) of stream sediments and in fine grain fraction of soils (–100 mesh), which indicates that coarse-grained stream sediments and fine-grained soils are useful sample media for regional and local geochemical survey respectively. U and Mo are direct indicator elements for volcanic type uranium deposits. The other associated elements include Th, La, Hg, Sb, Zr, etc. The indicators are helpful for the evaluation of volcanic type uranium deposits not only in north Hebei but also in the whole North China.
SHI Shu-juan,WANG Xue-qiu,LI Ran,DING Sai.2019.Geochemical Indicators for Volcanic-type Uranium Deposits in Northern Hebei Province[J].Acta Geoscientica Sinica,40(3):469-477.
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