Journal of Geological Society of India (Online archive from Vol 1 to Vol 78)

Xiao-Yong Yang ¹, Xue-Ming Yang ², Lai-Li Jiang ³, Kuiren Wang ¹, Li-Guang Sun ¹

Affiliations
1 school of Earth and Space Sciences, Advanced Center for Earth Sciences and Astronomy of the Third World Academy of Sciences, University Science and Technology of China, Hefei 230026, CN
2 Department of Geology, University of New Brunswick, Fredericton, NB, E3B 5A3, CA
3 Anhui Academy of Geology and Survey, Hefei 230001, CN

Abstract

Shaxi porphyry Cu-Au deposit in central Anhui Province is located in the Middle-Lower reaches of Yangtze metallogenic valley in east China. Red sandstone and conglomerate of Cretaceous age, clastic rocks of Middle and Lower Jurassic, clastic rocks of continental sea facies of Upper Devonian-Middle Silurian age, various continental volcanic rocks of Jurassic age form the rock types of the Shaxi porphyry copper-Gold metallogenic belt. The ore district is cut by multiple faults, of which the most important are Tanlu fault and Fanshan-Tongling faults, the former being the largest fault system in East Astan continent and the later being the regional deep fault. The geological, geochemical and mineralogical methods used to investigate the porphyry copper-Gold deposit associated with large scale sulphide mineralizatlon forms the theme of this paper. Through field geological surveys, mineralogical observation, compositional analyses on minerals using EPMA, geochemical analyses on Cu-Au-Bearing intrusive rocks, fluid inclusion and oxygen, hydrogen, sulphur isotopic studies, and element distributions detected by PIXE system, the characteristics of mineralization and gold occurrence in the Shaxi porphyry copper-Gold deposit have been fully investigated. The results of the study form the basis for further research and exploration on the porphyry copper-Gold deposit of the Middle-Lower Yangtze region.

Keywords

Porphyry Gold Deposit, Geochemistry, Fluid Inclusion, Stable Isotope Studies, Tan-Lu Fault, Shaxi Cu-Au Deposit, Anhui Province, East China.

Full Text