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河南桐柏县破山银矿和银洞坡金矿的硫同位素研究

李红梅1,魏俊浩1,黄祥芝2   

  1. 1中国地质大学 资源学院,湖北 武汉430074;2湖北省地质调查院,湖北 武汉430030
  • 收稿日期:2007-07-16 修回日期:2007-12-15 出版日期:2008-01-20 发布日期:2008-01-20
  • 基金资助:

    中国地质调查局“西藏1∶25万安多幅(I46C004002)区域地质调查”项目(200213000011)

Sulfur Isotopic Compositions of the Poshan Silver Deposit and Yindongpo Gold Deposit in Tongbai County,Henan Province

LI Hong-mei1, WEI Jun-hao1,HUANG Xiang-zhi2   

  1. 1Faculty of Earth Resources, China University of Geosciences,Wuhan, Hubei430074, China;
    2Hubei Institute of Geological Survey, Wuhan, Hubei430030, China
  • Received:2007-07-16 Revised:2007-12-15 Online:2008-01-20 Published:2008-01-20

摘要:

河南桐柏县围山城金银成矿带的破山银矿和银洞坡金矿位于河前庄背斜的轴部和两翼,围岩为歪头山岩组,矿体受地层和构造的双重控制。两个矿床的矿石硫同位素δ34S值变化范围很窄,位于-1.8‰~5.3‰之间,具塔式效应,与围岩的硫同位素组成类似,具有深源硫的特征,由混合总体筛分可推测围岩提供了大部分硫源,破山银矿δ34S∑S为2.8‰左右。同时赋矿围岩的Au、Ag含量远远高于地壳丰度,因此可推断成矿物质主要来源于围岩歪头山岩组。

关键词: 硫同位素, 成矿物质来源, 破山银矿, 银洞坡金矿, 河南

Abstract:

The Poshan silver deposit and Yindongpo gold deposit,occurring in the axis of the Heqianzhuang anticline and its wings,are situated at the Weishancheng gold-silver metallogenic belt in the Tongbai County,Henan Province.The ore bodies are both controlled by strata and structures with Waitoushan Formation as their host rocks.The δ34S values in these two deposits range from-1.8‰ to 5.3‰.These sulfur isotopic compositions are characterized by tower style distribution,similar to their host rocks,which also indic...

Key words: sulfur isotope, ore-forming material source, Poshan silver , deposit, Yindongpo gold deposit

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