| 辽西二道沟金矿成矿物质来源：来自S Pb同位素的证据 |
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| 引用本文： | 聂飞,刘书生,董国臣,陈永长,王鹏.辽西二道沟金矿成矿物质来源：来自S Pb同位素的证据[J].现代地质,2018,32(6):1283. |
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| 作者姓名： | 聂飞 刘书生 董国臣 陈永长 王鹏 |
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| 作者单位： | (1中国地质调查局 成都地质调查中心，四川 成都610081；2中国地质大学(北京) 地球科学与资源学院，北京100083；
3辽宁二道沟黄金矿业有限责任公司，辽宁 朝阳122100) |
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| 基金项目： | 中国地质调查局研究项目（121201010000150013, 1212011120608, 1212011220907）。 |
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| 摘 要： | 辽西二道沟金矿位于华北克拉通北缘中段，矿化类型为石英脉型，矿脉产状受断裂严格控制。对该矿床的典型矿脉进行了详细的硫、铅同位素研究，探讨了该矿床的成矿物质来源。分析表明：二道沟金矿成矿热液的总硫同位素组成接近地幔硫的值(δ34S≈0‰)，反映了成矿热液的硫主要来自深部岩浆；铅同位素206Pb/204Pb、 207Pb/204Pb和208Pb/204Pb分别变化在17047~17292、15319~15555和36991~37855之间，得出矿石铅主要来源为地幔，且有下地壳铅的混入；二道沟金矿矿石的硫、铅同位素特征与西对面沟岩体的硫、铅同位素组成特征基本一致，说明成矿物质的来源与西对面沟岩体(或这次岩浆作用)有密切联系。这些证据都证明了二道沟金矿成矿物质来源于深源岩浆。
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| 关 键 词： | 硫、铅同位素 成矿物质 二道沟金矿 辽西 |
The Ore forming Material of the Erdaogou Gold Deposit in West
Liaoning Province: Evidence from S Pb Isotopes |
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| NIE Fei,LIU Shusheng,DONG Guochen,CHEN Yongchang,WANG Peng.The Ore forming Material of the Erdaogou Gold Deposit in West
Liaoning Province: Evidence from S Pb Isotopes[J].Geoscience——Journal of Graduate School,China University of Geosciences,2018,32(6):1283. |
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| Authors: | NIE Fei LIU Shusheng DONG Guochen CHEN Yongchang WANG Peng |
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| Institution: | (1Chengdu Center, China Geological Survey, Chengdu, Sichuan610081, China;
2School of Earth Sciences and Resources, China University of Geosciences, Beijing100083, China;
3Erdaogou Gold Mining Co Ltd, Chaoyang, Liaoning122100, China) |
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| Abstract: | The Erdaogou gold deposit in West Liaoning Province is located in the middle segment of north margin of North China Craton. The mineralization type is quartz vein type, and the occurrence of ore vein is controlled by fault. In this paper we study S and Pb isotopes in detail on the typical quartz vein to discuss the ore forming material source. The δ34S values of the total S isotope for the ore forming hydrothermal fluids are quite similar to those of the mantle, suggesting that the sulfur of the ore forming hydrothermal solution was derived from hypomagma. The 206Pb/204Pb, 207Pb/204Pb and 208Pb/204Pb values of ores range from 17047 to 17292, 15319 to 15555 and 36991 to 37855, respectively, suggesting that the ore lead was from mantle and lower crust. The S and Pb isotope values are similar to those of the rocks of Xiduimiangou, so we deduce that the sources of ore forming material are strongly associated with the Xiduimiangou rock (or this magmatism). All the evidences support that metallogenic materials were derived from hypomagma. |
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| Keywords: | sulfur and lead isotopes ore forming material Erdaogou gold deposit West Liaoning Province |
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