Isotopic Geochemical Characteristics and Genetic Analysis of Shuizhuling Cu-Fe-Au-S Deposit, Eastern China

摘要

The Shuizhuling Cu-Fe-Au-S deposit is characterized by a two-layer texture, evidently corresponding to its binary ability and vertical change. The δ~(34)S values of pyrite from the upper stratiform ore bodies vary from +0.9%o to +5.8%o, that of pyrite from the lower veined ores from +3.2%o to +6.4%o. The δ~(34)S values of barite from the upper stratiform ore bodies are +19.9%o. The δ~(18)O of calcite from the lower veined ore bodies is +13.3‰, the δ~(13)C of that being 1.2‰, while the δ~(18)O is +14.1‰ and the δ~(13)C is 2.2‰ of dolomite from the upper stratiform ore bodies. The mean δ~(34)S of pyrite increase gradually, with the average δ~(18)O and δ~(13)C decreasing progressively, from the upper stratiform ore bodies to the lower veined ore bodies. Studies on geology and isotope characteristics show the Shuizhuling Cu-Fe-S-Au deposit of submarine sedimentary exhalative origin.