摘要
拉拉铜矿位于横断山脉中段东侧,通过测定和分析矿区内硫、碳、氧同位素数值,表明成矿物质来源于火山活动,且通过C、O同位素的对比研究为本矿床的火山沉积成因提供了重要依据。并通过年代同位素测年的手段,分析早元古代、中元古代晚期和新元古代三个阶段的成矿过程形成了火山沉积—变质岩型铜矿,最终构建拉拉铜矿的成矿模式。
Lara copper mine is located on the eastern side of the middle section of the Hengduan Mountains.It is shown that the ore-forming material is derived from volcanic activity by the determination and analysis o f the sulfur,carbon and oxygen isotopic values in the mining area,and the comparison of C and O isotopes Sedi mentary origin provides an important basis.And through the means of isotope dating,the metamorphic rocks of the Early Proterozoic,Mesoproterozoic and Neoproterozoic stages were analyzed to form volcanic sedimentarymetamorphic rock copper deposits,and finally the metallogenic model.
引文
[1]WEI TERRY CHEN AND MEI-FU ZHOU?Paragenesis,Stable Isotopes,and Molybdenite Re-Os Isotope Age of the Lala Iron-Copper Deposit,Southwest China.Society of Economic Geologists,2012,v.107,pp.459–480.
[2]张泽斌,何宇与阮晓宽,拉拉铜矿流体包裹体特征及成因.[J]四川地质学报,2016(02):第258-260页.
[3]柯丹丹,四川会理拉拉铜矿床流体包裹体特征研究.[D]2015,成都理工大学.第83页.
[4]廖娟,四川会理拉拉铜矿床矿相学特征及成因意义.[D]2016,成都理工大学.第79页.
[5]周家云等,拉拉铜矿黄铁矿微量元素地球化学特征及其成因意义.[J]矿物岩石,2008(03):第64-71页.
[6]孙燕,舒晓兰与肖渊甫,四川省拉拉铜矿床同位素地球化学特征及成矿意义.[J]地球化学,2006(05):第553-559页.