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| STUDY ON THE GEOCHEMICAL CHARACTERISTICS AND ORE-FORMING FLUIDS OF HENANZHUANG GOLD DEPOSIT |
| LI Zhao-yi1, CHEN Shou-yu1,2, LI Sheng-li3, CHEN Jun-lin1, TIAN Guang-li1, ZAN Pei1 |
1. Faculty of Earth Resources, China University of Geosciences, Wuhan 430074, China;
2. State Key Laboratory for Geological Process and Mineral Resources, China University of Geosciences, Wuhan 430074, China;
3. No.1 Institute of Geological Survey, Henan Bureau of Geology and Mineral Exploration, Zhengzhou 450000, China |
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Abstract The Henanzhuang Gold Deposit is located on the Qinling tectonic belt in southernmost North China Plate with the host rock of a set of calc-muddy carbonate rock formation. The mineralization is controlled by strata and structure. The sources and metallogenic conditions of ore-forming fluid are studied by analyzing the trace, rare earth elements and C-H-O-S isotopes. The results show that the ore-forming fluid derived from magma is affected by later metamorphism and sedimentary reformation. The C and partial O elements come from the dissolution of marine carbonate, and catalyze the enrichment of Au. The S isotope and trace elements data indicate the deposit was formed in the anoxic reducing environment with the ore-forming fluid derived from deep crust or mantle. The geological and geochemical characteristics of the Henanzhuang Gold Deposit are similar to those of altered rock-type gold deposits, thus it should be classified as the latter.
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Received: 07 December 2017
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2018, Vol. 27 
