现代地质2011，Vol.25Issue(4)：730-739,10.
湖北铜绿山矽卡岩型铜铁矿床同位素地球化学研究
Isotopic Geochemistry of the Tonglushan Cu-Fe Skarn Type Deposit in Hubei Province
摘要
Abstract
Located in the southeastern Hubei metallographic province of the Middle-Lower Yangtze River Fe-Cu metallogenic belt, the Tonglushan Cu-Fe deposit is a typical skarn Cu-Fe deposit in the southeastern Hubei metallographic province. The ore bodies, in the lenticular forms, occur in the contact zone between the marble of 4th -7th Members of the Lower Triassic Daye Group. The ore-forming process can be divided roughly into five stages; the anhydrous skarn stage( I ) , the hydrous skarn stage( II ), the oxide stage( III), the quartz-sul-fide stage(IV) and the carbonate stage( V ). Ore minerals mainly include magnetite, chalcopyrite and hematite; gangue mineral include mainly garnet, quartz and carbonate mineral. This paper mainly studied sulfur, hydrogen , oxygen, carbon, lead isotopic compositions and analyzed the indicative meaning of these isotopes to chemistry of the ore fluids and the sources of the ore-forming materials and intrusions. The composition of H and 0 isotopes shows that ore fluids were most likely composed of magmatic water mixed with limited meteoric water at the early ore-forming stage and mixed with much meteoric water at the late ore-forming stage. Sulfur and carbon isotopic data suggest that the ore forming materials were mainly derived from the deep magma and the carbon was derived subordinately from the dissolution of wall rocks or the mantle. The Pb isotopic composition of ore sulfides are stable and they are ordinary common lead. Ore lead was derived from mantle magma which was subjected to the hybridization of crust materials in the course of intruding upward.关键词
同位素地球化学/矽卡岩型矿床/铜绿山/铜铁矿床/湖北Key words
isotope geochemistry/ skarn type deposit/ Tonglushan/ Cu-Fe deposit/ Hubei Province分类
天文与地球科学引用本文复制引用
王彦博,顾雪祥,张宗保,董树义..湖北铜绿山矽卡岩型铜铁矿床同位素地球化学研究[J].现代地质,2011,25(4):730-739,10.基金项目
中国地质调查局全国危机矿山接替资源找矿项目“长江中下游地区矽卡岩型矿床成矿规律总结及成矿机制研究”(20089938). （20089938）
