| 张玉明,张保平.河南银洞沟银多金属矿地质特征及成因机理探讨[J].矿产勘查,2020,11(10):2142-2148 |
| 河南银洞沟银多金属矿地质特征及成因机理探讨 |
| Geological characteristics and genetic mechanism of Yindonggou silver polymetallic deposit in the south Henan Province |
| 投稿时间：2020-05-26 |
| DOI： |
| 中文关键词: 银多金属矿 成因机理 二郎坪地体 银洞沟 河南 |
| 英文关键词: silver polymetallic deposit, genetic mechanism,the Erlangping terrane,Yindonggou, Henan Province |
| 基金项目:中国地质调查局天津地质调查中心2015年地质调查项目(编号:FZK2015-4-166号)资助。 |
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| 中文摘要: |
| 河南省银洞沟银多金属矿床位于秦岭造山带东段二郎坪地体中,通过矿产调查和矿区勘查工作,发现矿体呈脉状产出,含矿围岩以小寨组绢云石英片岩为主,矿石类型为多金属硫化物石英脉型和蚀变岩型两种。赋存矿体的二郎坪群小寨组变质岩地层中Ag,Au含量较高,为矿源层。矿床流体气相成分和氢、氧同位素特征,成矿流体系统与造山型矿床的特征基本一致,其成因类型可归为造山(层控)型变质热液型矿床。对该区成因机理进行探讨,以期为今后在二郎坪地体东段的找矿提供参考。 |
| 英文摘要: |
| The Yindonggou silver gold polymetallic deposit is located in the Erlangping terrane of the eastern Qinling orogenic belt, Through mineral exploration and mining exploration work,and Finding ore body is vein like. The host rock is mainly sericite quartz schist of Xiaozhai formation,The ore bearing rocks are sericite quartz schist of Xiaozhai formation, and the ore types are polymetallic sulfide quartz vein type and altered rock type. The wall rock alteration near the mine mainly includes silicification, pyritization, etc. according to the gas phase composition of the deposit fluid and the characteristics of hydrogen and oxygen isotopes, it shows that the Ag and Au contents in the metamorphic rock stratum of Xiaozhai formation of Erlangping group are relatively high, which is the source bed. The metallogenic fluid system is basically the same as that of orogenic deposits, and its genetic type can be attributed to orogenic (stratabound) metamorphic hydrothermal deposits. According to this metallogenic mechanism, It points out the direction of prospecting in the east section of Erlangping terrane in the future. |
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