现代地质Issue(4)：674-685,12.
新疆伊宁县塔北铅锌矿床地质特征和S、Pb、C、O同位素组成
Ore Geology and Sulfur,Lead,Carbon and Oxygen Isotope Composition of the Tabei Pb-Zn Deposit,Yining County,Xinjiang
摘要
Abstract
The Tabei Pb-Zn deposit,located in the Tulasu basin,Western Tianshan,is a newly explored hy-drothermal deposit.The Pb-Zn orebodies are controlled by fault and hosted in acid tuff of the fifth member of the Upper Devonian to Lower Carboniferous Dahalajunshan Formation.The δ34 S values of the sulfides in the main stage range from 0.5‰ to 7.3‰,and the estimated δ34 S∑S of the ore-forming hydrothermal system is around 2.7‰,which reflects a characteristic of sulfur from magmatic source.Theδ34 S values of the gypsum in the late stage vary from 4.7‰to 5.3‰,indicating that the aqueous sulfate may be derived from the disproportionation of SO2 or the oxidation of H2 S.The compositions of Pb isotopes of sulfides are stable and similar to those of host volcanic rocks,suggesting that the ore-forming materials were derived from the ore-bearing volcanic rocks.Car-bon and oxygen isotopic compositions of calcite show that carbon in ore-forming fluid was mainly derived from the magma.The Tabei Pb-Zn deposit may belong to the epithermal deposit with deeper mineralization.关键词
S/Pb/C/O同位素/成矿物质来源/浅成低温热液型矿床/塔北铅锌矿床/新疆Key words
S,Pb,C and O isotopes/source of ore-forming material/epithermal deposit/Tabei Pb-Zn de-posit/Xinjiang分类
天文与地球科学引用本文复制引用
彭义伟,顾雪祥,王新利,章永梅,刘溪溪,于晓亮..新疆伊宁县塔北铅锌矿床地质特征和S、Pb、C、O同位素组成[J].现代地质,2014,(4):674-685,12.基金项目
国家科技支撑计划项目（2011BAB06B02-02）；国家自然科学基金重点项目（U1303292）。 （）
