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| 湖南瑶岗仙钨多金属矿床辉钼矿Re-Os同位素定年和硫同位素分析及其地质意义 | |
| 引用本文： | 李顺庭,王京彬,祝新友,李超.湖南瑶岗仙钨多金属矿床辉钼矿Re-Os同位素定年和硫同位素分析及其地质意义[J].现代地质,2011,25(2). |
| 作者姓名： | 李顺庭 王京彬 祝新友 李超 |
| 作者单位： | 1. 中国地质大学地球科学与资源学院,北京,100083;北京矿产地质研究院,北京,100012 2. 北京矿产地质研究院,北京,100012 3. 国家地质实验测试中心,北京,100037 |
| 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 |
| 摘 要： | 瑶岗仙钨多金属矿田位于南岭成矿带中部,由瑶岗仙黑钨矿床、青山里铅锌矿床以及和尚滩白钨矿床组成。野外地质调查显示,这3个矿床空间相邻,矿体产状和控矿因素相近。利用辉钼矿Re-Os同位素测年,获得瑶岗仙黑钨矿床与和尚滩白钨矿床的辉钼矿Re-Os等时线年龄分别为(158±1.2)Ma(n=7,MSWD=1.3)和(160±3.3)Ma(n=6,MSWD=2.7),表明两种钨矿化是同期形成的,与瑶岗仙复式岩体的成岩事件在时空上吻合,是南岭地区第2次大规模成矿事件的典型代表。3个矿床的矿石矿物(黄铁矿、闪锌矿、辉钼矿)δ34S值介于-1.8‰~+1.4‰之间,分布集中且接近零值,表明成矿物质来源于岩浆。综合上述特征,这3个矿床系同一岩浆成矿作用,在成矿岩体不同距离、不同部位发生不同类型金属矿化的产物。 |
| 关 键 词： | 钨多金属矿田 辉钼矿Re-Os等时线年龄 硫同位素组成 地质意义 湖南瑶岗仙 |
Re-Os Dating of Molybdenite and Sulfur Isotope Analysis of the Yaogangxian Tungsten Polymetallic Deposits in Hunan Province and Their Geological Significance |
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| LI Shun-ting,WANG Jing-bing,ZHU Xin-you,LI Chao.Re-Os Dating of Molybdenite and Sulfur Isotope Analysis of the Yaogangxian Tungsten Polymetallic Deposits in Hunan Province and Their Geological Significance[J].Geoscience——Journal of Graduate School,China University of Geosciences,2011,25(2). | |
| Authors: | LI Shun-ting WANG Jing-bing ZHU Xin-you LI Chao |
| Affiliation: | LI Shun-ting1,2,WANG Jing-bing2,ZHU Xin-you2,LI Chao3(1.School of Earth Sciences and Resources,China University of Geosciences,Beijing 100083,China,2.Beijing Institute of Geology andMineral Resources,Beijing 100012,3.National Analytic Center of Geology,Beijing 100037,China) |
| Abstract: | The Yaogangxian tungsten polymetallic ore-field consisting of Yaogangxian tungsten deposit,Qing-shanli lead-zinc deposit and Heshangtan scheelite deposit,is located in the central part of the Nanling metallogenic belt.Detailed field geological investigation shows that three deposits are rather close in space,occurrence of ore body and ore-control factors.Re-Os dating of molybdenite was performed to determine the age of mineralization of Yaogangxian tungsten deposit and Heshangtan scheelite deposit.Re-Os iso... |
| Keywords: | tungsten polymetallic ore-field molybdenite Re-Os isochron age sulfur isotopic composition geological significance Yaogangxian in Hunan Province |
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