| 青海省门源县铜厂沟金矿3号矿化蚀变带的发现与评价 |
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| 引用本文： | 刘军,;靳淑韵,;张汉成,;肖荣阁,;安国英.青海省门源县铜厂沟金矿3号矿化蚀变带的发现与评价[J].物探与化探,2014(5):879-884. |
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| 作者姓名： | 刘军 ;靳淑韵 ;张汉成 ;肖荣阁 ;安国英 |
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| 作者单位： | [1]中色地科矿产勘查股份有限公司,北京100012; [2]有色金属矿产地质调查中心,北京100012; [3]中国地质大学地球科学与资源学院,北京100083; [4]中国国土资源航空物探遥感中心,北京100083 |
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| 基金项目： | 2003年青海省财政专项（20032511） |
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| 摘 要： | 青海省门源县铜厂沟金矿床位于北祁连造山带,为受构造蚀变破碎带控制的构造蚀变岩型金矿床,属于高品位小型金矿床,资源面临枯竭。通过野外工作,在矿区西部新发现一条矿化蚀变带,通过3条剖面样品分析,矿化蚀变带有明显的地球化学显示,原生晕样品中金含量最高在(0.2~4.5)×10-6,次生晕土壤样品金含量最高为0.1×10-6,且银也有明显的异常显示。各种化学方法处理的数据均在3号矿化蚀变带表现出明显的转折点,说明3号矿化蚀变带是客观存在的地质体,并且有一定延伸。通过激电中梯物探方法进行异常查证,发现低阻、高极化异常带延伸通过处,正是3号矿化蚀变带位置,二者对应良好。地质、化探和物探三者对应良好,表明该区仍有一定找矿前景,下一步工作应重点针对3号矿化蚀变带进行勘探。
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| 关 键 词： | 青海 铜厂沟 金矿 矿化蚀变带 评价 |
The discovery and appraisal of 3rd mineralization zone of the Tongchanggou gold deposit in Qinghai Province |
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| Institution: | LIU Jun JIN Shu-Yun ZHANG Han-Cheng XIAO Rong-Ge AN Guo-Ying ( 1. Sinotech Minerals Exploration Co., Ltd. ,Beijing 100012, China; 2. China Non-ferrons Metals Resources Geological Survey, Beijing 100012, Chi- na ; 3. School of the Earth Sciences and Resources, China University of Geosciences , Beijing 100083, China ; 4. China Aero geophysical Surey and Remote Sensing Genter for Land and Resources, Beijing 100083, China) |
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| Abstract: | Located in the North Qilian orogenic belt, the Tongchanggou gold deposit is controlled by the tectonic altered zone and be- longs to a small tectonic altered type high-grade gold deposit. Through field work, a mineralized alteration zone was discovered in the western mining area. Sample analysis along three sections shows obvious manifestations of mineralization and alterations, gold content in primary halo samples is the highest （0.2 - 4.5）×10-6 and that in secondary halo soil samples is 0.1×10-6, with silver also showing ob- vious abnormal display. Various chemically treated data all lie in the 3rd mineralized alteration zone with a turning point, indicating that the 3rd mineralized alteration zone is a geological body with certain extension. Through induced electric medium gradient method, it is found that the high polarization and low resistivity anomaly extends through the 3rd mineralized alteration zone. Geologieal, geochemical and geophysical data are consistent well with each other, which suggests that there still exists some prospecting potential, and future work should focus on the 3rd mineralized alteration zone. |
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| Keywords: | Qinghai Tongchanggou gold deposit mineralization zone appraisal |
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