Journal of Jilin University(Earth Science Edition) ›› 2017, Vol. 47 ›› Issue (3): 645-658.doi: 10.13278/j.cnki.jjuese.201703101

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Metallogenic Conditions and Ore-Prospecting of Shimensi Tungsten Ore Section in the North of Dahutang Area in Jiangxi Province

Xiang Xinkui1, Yin Qingqing2, Zhan Guonian1, Qu Kai2, Liu Xing2, Tan Rong1, Zhong Bo1   

  1. 1. No.916 Geological Party, Jiangxi Bureau of Geology & Mineral Exploration, Jiujiang 332100, Jiangxi, China;
    2. Tianjin Geological Survey Center, China Geological Suvey, Tianjin 300181, China
  • Received:2016-11-28 Online:2017-05-26 Published:2017-05-26
  • Supported by:
    Supported by the Project of China Geological Survey (12120114034501)

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Abstract: By analyzing previous mineral exploration, geological mapping and old-workings recording of Shimensi ore section in the north of Dahutang area, it has been proven that there occurs the clear intruding boundary and stratiform pegmatite-like crust between the mixed biotite granite and the mixed muscovite granite. According to the spatial relationship between the two intrusions and regional metallogenic regularities, it can be concluded that the Yanshanian porphyritic-like biotite granite which played as the ore-source rock intruded into the Jinningian biotitic granodiorite. Due to the greisenization, the biotite granodiorite, the favorable ore-forming wall rock, released necessary calcium ions for the formation of scheelite. The contact interface between the Yanshanian porphyritic-like biotite granite stock and the Jinningian biotite granodiorite batholith was the major ore-forming structure or metallogenic interface, and controlled the location, shape and occurrence of main ore bodies. The thick scheelite ore body is firstly discovered within the Neoproterozoic granodiorite, which is determined as the hydrothermal cryptoexplosion breccia type, from distinct mixed rocks filled by felsic rock. The new-discovered veinlet-disseminated type scheelite ore resource is calculated, and the WO3 content is up to the industrial grade. New knowledge of the ore-forming condition and geological characteristics of the deposit lead to correcting design of the detailed survey aimed at the large quartz-wolframite vein, and important ore-prospecting breakthroughs of tungsten polymetallic deposit in the northern Jiangxi Province. Thanks to the ore-forming geological condition comparison, it can be deduced that the Miaowei ore section and Taipingdong orefield have the great ore-prospecting potential.

Key words: Dahutang ore-concentrated area, Shimensi ore section, metallogenetic condition, scheelite, veinlet-disseminated ore body, hydrothermal cryptoexplosion breccias type ore body

CLC Number: 

  • P611.1
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