| 甘肃大水金矿围岩蚀变带元素迁移特征与金成矿的关系 |
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| 引用本文： | 胡媛,彭秀红,张江苏,杨海,郭成.甘肃大水金矿围岩蚀变带元素迁移特征与金成矿的关系[J].中国西部科技,2013(1):24-25. |
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| 作者姓名： | 胡媛 彭秀红 张江苏 杨海 郭成 |
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| 作者单位： | 成都理工大学地球化学与核资源工程系;成都理工大学四川省地学核技术重点实验室;甘肃省第三地质矿产勘查院;成都理工大学核技术与自动化工程学院 |
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| 基金项目： | 国家自然科学基金委资助的青年科学基金项目(编号:41103025);国土资源部项目(编号:200662061);成都理工大学中青年教学骨干教师项目 |
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| 摘 要： | 大水金矿床是近几年在西秦岭地区新发现的一个国内外十分罕见的矿化特征极为独特的金矿床。本次研究通过蚀变岩石物质组分迁移计算分析,自矿体中心向两侧或远离破碎带,蚀变强度减弱。矿化蚀变带内SiO2明显富集,CaO、CO2明显迁出,Fe2O3也有所富集,说明金矿化与硅化、方解石化和赤(褐)铁矿化关系密切,Au矿化强度与Sb、Ba成正相关而与Sr、Pb成负相关,可作为找矿的直接标志,围岩蚀变带的规模和强度可间接指示金矿化的规模及强度,对于在大水金矿区指导找矿、提高金矿成矿预测能力有着极其重要的意义,用此作为地球化学找矿研究,具有指导找矿的实用意义。
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| 关 键 词： | 大水金矿床 围岩蚀变 元素迁移 金矿化 |
Characteristics of Elements Migration During wall Rock Alteration and Mineralization in the Dashui Gold Deposit,Gansu |
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| HU Yuan,PENG Xiu-hong,ZHANG Jiang-su,YANG Hai,GUO Cheng.Characteristics of Elements Migration During wall Rock Alteration and Mineralization in the Dashui Gold Deposit,Gansu[J].Science and Technology of West China,2013(1):24-25. |
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| Authors: | HU Yuan PENG Xiu-hong ZHANG Jiang-su YANG Hai GUO Cheng |
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| Institution: | 1.Geochemistry,Chengdu University of Technology,Chengdu,Sichuan 610059,China;2.Provincial Key Lab of Nuclear Technology in Geosciences,Chengdu University of Technology,Chengdu,Sichuan 610059,China;3.Third Geology and Mineral Resources Exploration Academy of Gansu Province,Lanzhou,Gansu 730050,China;4.Department of Nuclear technology and Automation Engineering,Chengdu University of Technology,Chengdu,Sichuan 610059,China) |
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| Abstract: | Dashui gold deposit,a new type of deposit recently discovered in west Qinling tectonic belt,has very unique ore-forming characteristics. The alteration intensity has a direct genetic association with structural belts.It is significantly enriched with SiO2 and Fe203,while the CaO and CO2 obviously reduced which indicating that the gold mineralization is closely related to silicification,carbonation,and hematitization.The intensity of Au mineralization has a positive correlation with Sb and Ba,while a negative correlation with Sr and Pb,that can be used as a direct indicator of gold prospecting.The scale and intensity of wall-rock alteration zone can be an indirect indicator of the scale and intensity of the gold mineralization,which has great significance in searching veins and forecasting concealed orebodies. |
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| Keywords: | Dashui gold deposits Wall rock alteration Element migration Gold mineralization |
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