Journal of Jilin University(Earth Science Edition) ›› 2015, Vol. 45 ›› Issue (3): 772-790.doi: 10.13278/j.cnki.jjuese.201503111

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Characteristics of Volcanic-Type Uranium-Ore Forming and Sign for Uranium Searching at Hetaoba Area, Duolun County, Inner Mongolia

Han Jun1, Xue Wei2,3, Song Qingnian4   

  1. 1. CNNC Key Laboratory of Uranium Resources Exploration and Evaluation Technology, Beijing Research Institute of Uranium Geology, Beijing 100029, China;
    2. Faculty of Earth Resource, China University of Geosciences, Wuhan 430074, China;
    3. No.208 Geologic Party, CNNC, Baotou 014010, Inner Mongolia, China;
    4. Department of Geoscience, East China Institute of Technology, Nanchang 330013, China
  • Received:2014-08-20 Published:2015-05-26

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Abstract:

Hetaoba area is located in the connecting part between Duolun and Zhenglanqi of Xilinguole of Inner Mongolia, and tectonically sits in the connecting part of Inner Mongolia Hercynian tectonic-magmatic belt and the north of the North China craton. A new found uranium deposit exists at the acidic volcanic rocks that are located at the arc belt of the south of Mesozoic Zhenzishan Mountain likely as a kind of hydrothermal-type uranium deposit relating to the Mesozoic volcanic rocks. This uranium deposit is formed in the node of subvolcanic rocks and controlled by the SN-NE trenched fault structure. Through the preliminary studies we found that the transitive belt of Mesozoic volcanic uplift and sag as well as the intersection of multi faults, which controlling the volcanic basin and subvolcanic rocks, are favorable for uranium mineralization. Other signs such as kaolinization, potassium alteration, silicification, and limonitization tectonic belt, and abnormal ring of earth instant Rn anomaly, high electronic resistance, and strong variety of magnetic ratio constitute uranium ore-forming indicator for further uranium survey.

Key words: Hetaoba area of Duolun County,Inner Mongolia, Mesozoic, volcanic rocks, hydrothermal-type uranium deposit, ore-forming symbol for uranium survey, uranium deposit

CLC Number: 

  • P631.4

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