| 内蒙古陈巴尔虎旗四五牧场金矿地质特征及成因探讨 |
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| 引用本文： | 郑宝军,付国立.内蒙古陈巴尔虎旗四五牧场金矿地质特征及成因探讨[J].地质找矿论丛,2010,25(1):43-49. |
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| 作者姓名： | 郑宝军 付国立 |
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| 作者单位： | 1. 内蒙古自治区地质调查院,呼和浩特,010020
2. 赤峰市国土资源局,内蒙古,赤峰,024000 |
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| 摘 要： | 内蒙古陈巴尔虎旗四五牧场金矿与侏罗-白垩纪浅成-超浅成岩体关系密切,构造-岩浆热液在上侵过程中萃取部分基底岩系中的成矿物质,并在粗安质隐爆角砾岩中富集成矿。硫同位素分析表明部分成矿物质来源于围岩,包体测温表明成矿热液为低温热液,同位素测年结果表明成矿期在晚侏罗世-早白垩世。矿床为赋存于粗安质火山岩中、与侏罗-白垩纪火山-次火山活动有关的HS型浅成中低温热液型铜金矿。正磁异常区的低-负磁带状异常是矿化蚀变带的反映。具有一定规模、有明显浓集中心、浓度分带好、具明显分带的As-Sb-Ag-Hg-Au组合异常,伴有Cu,Pb,Zn,Bi异常,是寻找该类型铜金矿床的有利地段。
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| 关 键 词： | 四五牧场金矿 粗安质隐爆角砾岩 HS型浅成中低温热液矿床 内蒙古 |
| 收稿时间： | 2009/12/28 0:00:00 |
GEOLOGICAL CHARACTERISTICS OF THE GOLD DEPOSIT AND ORE PREDRTION AT SIWU PASTURE,CHENBAERHU BANNER,INNER MONGOLIA |
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| ZHENG Bao-jun and FU Guo-li.GEOLOGICAL CHARACTERISTICS OF THE GOLD DEPOSIT AND ORE PREDRTION AT SIWU PASTURE,CHENBAERHU BANNER,INNER MONGOLIA[J].Contributions to Geology and Mineral Resources Research,2010,25(1):43-49. |
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| Authors: | ZHENG Bao-jun and FU Guo-li |
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| Institution: | 1. The Inner Mongolian Geological Survey, Huhehaote 010020, China ; 2. Inner Mongolian Land and Resources Bureau, Chifeng 024000, Inner Mongolia ,China) |
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| Abstract: | The gold deposit at Siwu pasture, Chenbaerhu Banner, Inner Mongolia is closely related to the Jurassic- Cretaceous shallow-super-shallow intrusive body and the tectonic-magmatic fluid intrudes up and extracts some ore materials from rock sequence of the basement and the ore materials are enriched to form ore in the tratchyoandesitic breccia. Analysis of S isotopes shows that some of the ore materials are derived from the wall rock; measurement of inclusion temperature, the epithermal ore fluid; isotopic dating of the ore, formed at Late Jurassic-Early Cretaceous Epoch. The deposit occurs in the tratchyoandesitic volcanics and is a HS epithermal Cu, Au deposit related to Jurassic-Cretaceous volcaic- sub-volcanic activity. Low-negative magnetic bands in the normal magnetic anomaly are reflection of the mineralization- alteration zones. Areas in certain sizes where concentration centers occur with evident concentration zoning and obvious zoned combination anomaly of As-Sb-Ag-Hg-Au in association with Cu,Pb,Zn,Bi anomaly are targets for prospecting of such ore deposit. |
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| Keywords: | Siwu pasture gold deposit crypto-exploded tratchyoandesitic breccia HS epithermal deposit Inner Mongolia |
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