【作者】 罗洪； 许红； 蔡志勇； 胡绍祥； 罗西玲；

【Author】 Luo Hong, Xu Hong, Cai Zhiyong, Hu shaoxiang, Luo Xilin ( Westem Hubei Party of mineral Resources, Hubei lnstitnte of Geological Survey, Xiangfan 441003 )

【机构】 湖北省地质调查院鄂西矿产所；

【摘要】 通过对余家院银矿铅同位素特征进行详细研究,认为矿石铅同位素组成及来源不同于下覆地层耀岭河组火山岩及赋矿地层陡山沱组,而与上覆地层寒武系底部相似,从而得出寒武系底部地层是矿床初始矿源层的结论,并结合已有的研究成果,对矿床成因进行了探讨。更多还原

【Abstract】 By means of study on Pb isotopic characteristics, it offers that the composition and origin of Pb isotope of ore bodies are different from those of the bottom rocks, volcanics of the Yaolinghe formation, as well as from the those of host rocks, the Dushanto formation of ore bodies, but are similar to those of lower Cambrian rocks, the cover rocks of ore bodies ; it suggests that lower Cambrian rocks may be the initial original layer which containing oreforming elements. Meanwhile, this paper also discusses the origin of the deposit.更多还原