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Geoscience ›› 2011, Vol. 25 ›› Issue (4): 720-729.

• Mineral Deposit Geology and Remote sensing prospecting • Previous Articles     Next Articles

Geological Characteristics and S, Pbisotope Geochemistry of Sareke Copper Deposit in Wuqia County, Xinjiang

XinjiangLI Zhidan1,2, XUE Chunji2, XIN Jiang2,3, WANG Sicheng4, JIA Zhiye2, SHI Haigang2,
DONG Xinfeng2, SHAO Xinglai2,5
  

  1. 1Tianjin Center of Geological Survey, China Geological Survey, Tianjin300170, China; 2State Key Laboratory of Geological Processes and
    Mineral Resources,School of Earth Sciences and Resources, China University of Geosciences, Beijing100083, China; 3Xinjiang Xinhui Mineral
    Corporation,Urumqi, Xinjiang830000, China; 4Key Laboratory of Orogenic Belts and Crustal Evolution of Ministry of Education,
    Peking University, Beijing100871, China; 5The National 305 Project Office of Xinjiang, Urumqi, Xinjiang830000, China
  • Received:2010-11-05 Revised:2011-06-01 Online:2011-08-29 Published:2011-08-31

Abstract:

Sareke copper deposit in MesoCenozoic sedimentary basins of northwestern margin of Tarim Basin is a largescale deposit. The tectonic location of the deposit is located in the Sarekebayi Mesozoic fault basin, which is seated between the western margin of Tuoyun MesoCenozoic pullapart basin and Late Hercynian deep ocean basin in east Alai. The orebodies, with the layered and lenslike shape, occurred in the gray green conglomerate belonging to the second lithologic section of Upper Jurassic Kuzigongsu Formation. The main metallic minerals are chalcocite and malachite with weak country rock alteration. δ34S of chalcocite is in the range of -240‰~-190‰,indicating that the sulfur are mainly derived from biological reduction of the strata sulfate. The ratio of 206Pb/204Pb, 207Pb/204Pb, and 208Pb/204Pb are 18475~18642, 15606~15676, and 38585~38795,respectively, which illustrate that the oreforming matters are mainly from upper crust and orogenic erosion zone. Geological characteristics and geochemistry of the copper deposit lead to the conclusion that Sareke copper deposit is a basin fluidrelated conglomerate type deposit.

Key words: copper deposit, geological characteristics, sulfur and lead isotope, Sareke copper deposit, Wuqia County, Xinjiang

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