Research on Metallogenic Model of Shuangpengxi Gold Copper Deposit in Qinghai

ZHANG Tao; LIU Qing-yun; ZHANG Xiao-juan; QI Shun-de

2012 Vol. 45, No. 1

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ZHANG Tao, LIU Qing-yun, ZHANG Xiao-juan, QI Shun-de. Research on Metallogenic Model of Shuangpengxi Gold Copper Deposit in Qinghai[J]. Northwestern Geology, 2012, 45(1): 184-191.

Citation:

ZHANG Tao, LIU Qing-yun, ZHANG Xiao-juan, QI Shun-de. Research on Metallogenic Model of Shuangpengxi Gold Copper Deposit in Qinghai[J]. Northwestern Geology, 2012, 45(1): 184-191.

Research on Metallogenic Model of Shuangpengxi Gold Copper Deposit in Qinghai

1.
Faculty of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China;No. 7 Team of Qinghai Geological Exploration Bureau for Non-ferrous Metals, Xining 810007, China
2.
No. 7 Team of Qinghai Geological Exploration Bureau for Non-ferrous Metals, Xining 810007, China

Publish Date: 15 March 2012

Abstract

Abstract

Shuangpenxi gold copper deposit is located in Tongren-Zeku metallogenic belt of Western Qinling.The ore bodies occurred in the outer contact skarn zone between Indosinian granodiorite and Carboniferrous-Permian Ganjia Formation carbonate.It is one of the typical skarn deposits.Metallic minerals in the ore include mainly pyrrhotite,pyrite,chalcopyrite,limonite,while gangue mineral are mainly quartz,calcite,tremolite,diopside.Ore-forming processes have experienced three stages of mineralization,skarn,quartz-sulfide and supergene.Research of stable isotope geochemistry of the ores indicates:δD varying from -56‰ to -49‰,δ¹⁸O varying from +9.2‰ to +9.4‰,implying that ore-forming fluids are magmatic water.δ³⁴S vary from +5.1‰ to +6.6‰,suggests sulphur is derived from magma in depth.δ¹³C vary from -8.9‰ to -8.4‰,indicating δ¹³C is derived from deep magma.Skarn metallogenic model of Shuangpengxi gold copper deposit has been built initially combining geological characters,which has some useful significance to the ore prospecting work in the area.
- metallogenic model /
- ore-forming fluid /
- stable isotope /
- Shuangpengxi gold copper deposit