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LIU Hong, HUANG Han-xiao, LI Guang-ming, XIAO Wan-feng, ZHANG Zhi-lin, LIU Bo, MA Dong-fang, DONG Lei, MA Dong. Factor analysis in geochemical survey of the Shangxu gold deposit, northern Tibet[J]. GEOLOGY IN CHINA, 2015, 42(4): 1126-1136.
Citation: LIU Hong, HUANG Han-xiao, LI Guang-ming, XIAO Wan-feng, ZHANG Zhi-lin, LIU Bo, MA Dong-fang, DONG Lei, MA Dong. Factor analysis in geochemical survey of the Shangxu gold deposit, northern Tibet[J]. GEOLOGY IN CHINA, 2015, 42(4): 1126-1136.
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Factor analysis in geochemical survey of the Shangxu gold deposit, northern Tibet

  • 1.

    Chengdu Center, China Geological Survey, Chengdu 610081, Sichuan, China

  • 2.

    Henan Institute of Geological Survey, Zhengzhou 450007, Henan, China

  • 3.

    No. 5 Geological Party of Tibet Geological Exploration Bureau, Golmud 816000, Qinghai, China

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  • Abstract: The Shangxu gold deposit, an orogenic gold deposit in the middle part of Bangong Co?Nujiang metallogenic polymetallic belt, is located in Shuanghu County of Tibet. Orebodies occur as veins and lens controlled by the NEE fractures, and the host rocks are carbonaceous slate and metasandstone belonging to the Mugagangri Group; quartz vein type ore and altered rock type ore coexist, with distinctive alteration. Based on an analysis of previous research results of geological features and metallogenic conditions, the authors analyzed the debris samples in the Shangxu gold ore district by using factor analysis method, and drew a geochemical subdivision map and a factor score map. Four geochemical subdivisions were recognized, i.e., Cu?Pb?Zn subdivision, Au?Ag subdivision, As?Sb subdivision, and W?Mo?Bi subdivision. Combined with field geological work, the authors hold that Au?Ag, and As?Sb are the optimum element combinations for prospecting prediction. In future work, orebody Ⅱ1 and orebody Ⅲ1, as well as their surroundings should be regarded as the preferred exploration areas. Meanwhile, predicting area A located in the north of No. Ⅲ ore section is also recommended with the purpose of finding Ⅲ1 type orebodies which extend westward.
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