Ruan K.,No 290 Research Institute |
Ruan K.,Key Laboratory of Radioactive Geology and Exploration Technology of National Defense |
Pan J.-Y.,Key Laboratory of Radioactive Geology and Exploration Technology of National Defense |
Cao H.-J.,No 290 Research Institute |
And 4 more authors.
Kuangwu Yanshi/ Journal of Mineralogy and Petrology
Shimensi tungsten deposit is located in the west part of the east metallogenic belt of Jiangnan uplift in the Lower Yangtze metallogenic province and the north side of Qin-Hang Belt. In this paper,the sulfur isotope composition of metal sulfide and carbon and oxygen isotopic composition of calcite of veinlet disseminated ore body are presented. It shows that the δ34 S of chal-copyrite of veinlet disseminated ore body is between -2. 6%o and - 0. 3%o with average value of - 1. 31%0, and the δ34S of molybdenite between - 1. 2%0 and 0. 3%o,.average of -0. 53%o. Sulfur mainly comes from deep magma or upper mantle. The δ13CV-PDB of calcite is between -11. 42%o and -5. 76%o with average value of -7. 06%o and its δ18Ov-SMOW is between 7.13%o and 1.6. 34%o with average value of 11. 79%o(indicating that the carbon is mainly derived from the deep magma or the upper mantle with mixed organic carbon. It is suggested that the ore-forming material within the mining area mainly come from S type granitic magma during Yanshanian movement,and it is possible that the ore-forming materials extracted useful elements from the country rocks during the emplacement of magma. Source