Patterns of Metallogenesis of Jiulongnao Orefield in the East Section of the Nanling Region and Direction for Prospecting
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Institute of Mineral Resources, Chinese Academy of Geological Sciences

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    Abstract:

    The Jiulongnao orefield is located in the ChongyiDayuShangyou ore concentration area in the east section of the Nanling Region. With advantageous minerogenetic condition, Jiulongnao orefield possesses different types of deposits. These deposits of skarntype, hydrothermal veintype, greisenstype, fracture zone alteration rocktype and weathering crusttype, form a mineralization framework with Jiulongnao granite as the center, WSn dominated, AuAgCuPbZnUNbTa zoned distribation. It is representative in Nanling Region and even in Southern China. Based on research of magmatism and mineralization of the Jiulongnao orefield, we suggest that different types of deposits are closely related to the Jiulongnao granite on oreforming material source. These deposits distribute in lines in the zonal and warpwise directions, and most of them formed during the Yanshanian Period, while individual one formed during the Indosinian Period. Deposits in the Jiulongnao orefield might belong to either different minerogenetic series or subseries, or different types of mineral resources. In addition, prospecting methodology has been put forward as to①prospecting and prediction at deep part of known deposits; ②evaluating the prospecting potential of deposits in inner and external zones; ③determining direction and expanding domain of exploration by comprehensive assessment based on concomitant regularity; ④putting successful prospecting experience of neighbouring orefield into practice on the basement of regional metallogenic regularity; ⑤developing new prospecting ideas.

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WANG Denghong, ZHAO Zheng, LIU Shanbao, GUO Naxin, LIANG Ting, CHEN Wei, ZHOU Xinpeng.2016. Patterns of Metallogenesis of Jiulongnao Orefield in the East Section of the Nanling Region and Direction for Prospecting[J]. Acta Geologica Sinica,90(9):2399-2411

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History
  • Received:May 11,2016
  • Revised:May 11,2016
  • Adopted:
  • Online: October 09,2016
  • Published: