| 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 |
| 内蒙古陈巴尔虎旗四五牧场金矿地质特征及成因探讨 |
| GEOLOGICAL CHARACTERISTICS OF THE GOLD DEPOSIT AND ORE PREDRTION AT SIWU PASTURE,CHENBAERHU BANNER,INNER MONGOLIA |
| 投稿时间：2009-12-28 |
| DOI：10.6053/j.issn.1001-1412.2010.1. 008 |
| 中文关键词: 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 |
| 英文关键词:Siwu pasture gold deposit crypto-exploded tratchyoandesitic breccia HS epithermal deposit Inner Mongolia |
| 基金项目: |
|
| 摘要点击次数: 1397 |
| 全文下载次数: 1775 |
| 中文摘要: |
| 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. |
| 英文摘要: |
| 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. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|
