Journal of Jilin University(Earth Science Edition) ›› 2015, Vol. 45 ›› Issue (4): 1086-1097.doi: 10.13278/j.cnki.jjuese.201504112

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Geological Characteristics, Ore Genesis and Comprehensive Utilization of Coexisting of Dafoyan Bauxite Deposit in Chongqing

Zhao Xiaodong1, Ling Xiaoming1, Gua hua2, Li Junmin1   

  1. 1. Chengdu Institute of Geology and Mineral Resources, Chengdu 610081, China;
    2. No.3 General Gold Party of CAPF, Chengdu 610036, China
  • Received:2014-12-18 Published:2015-07-26

Abstract:

Dafoyan bauxite deposit in Chongqing is a large-scale accumulation type bauxite. As a part of south Chongqing to north Guizhou metallogenic belt, Dafoyan bauxite deposit is characterized by its continental sedimentary bauxite formed in an oxidizing environment. The source rock serie exist under Qixia Formation or Liangshan Formation of Permian and on Hanjiadian Formation of Silurian or Huanglong Formation of Carbonic, and it is a combination of aluminum containing clay rocks. The ore body is in the middle of the ore bearing rock series and distributes continuously. This study is not only based on the analysis to the original bauxite test data, but also the test of trace and rare earth elements content to make preliminary judgment of metallogenic environment and parent rock. The ore minerals are mainly composed of diaspore composition, and kaolinite secondarily. The average content are: Al2O3 61.33%, SiO2 14.61%,A/S 4.20. Some trace elements are closed to or over the industrial tenor of comprehensive utilization, especially the contents of Ga and V. They can be used under the present technology. This suggestes that an attention should be paid to the associated elements so as to improve the latent economic value of bauxite.

Key words: bauxite, oregeology, formation environment, material source, associated elements, Dafoyan

CLC Number: 

  • P618.45

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