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| 铅同位素方法在隐伏矿深度与资源量定量预测中的应用研究——以北祁连西段寒山金矿为例 | |
| 引用本文： | 李中兰,崔学军,刘红英,王冉,徐力峰.铅同位素方法在隐伏矿深度与资源量定量预测中的应用研究——以北祁连西段寒山金矿为例[J].大地构造与成矿学,2007,31(4):441-451. |
| 作者姓名： | 李中兰 崔学军 刘红英 王冉 徐力峰 |
| 作者单位： | 1. 中国科学院边缘海地质重点实验室,中国科学院广州地球化学研究所,广东,广州,510640;中国科学院研究生院,北京,100049 2. 中国科学院边缘海地质重点实验室,中国科学院广州地球化学研究所,广东,广州,510640 3. 菏泽市国土资源局,山东,菏泽,274000 |
| 基金项目： | 中国地质大学地质过程与矿产资源国家重点实验室项目(课题编号:GPMR200607)，甘肃省科技厅科技攻关项目(2GS052-A52-003-11)，甘肃省地质矿产勘查开发局项目(GSDKJ-001-05-02)资助 |
| 摘 要： | 本文根据铅同位素示踪的有关理论和隐伏矿预测的方法,对北祁连地区寒山金矿作了详细的地表野外地质工作和系统剖面采样。通过对相关样品的铅同位素分析和数据处理,对该矿的隐伏矿深度和隐伏资源量进行了预测。结果显示:(1)寒山金矿自西北向东南矿体的V1与V2值存在着从低到高的规律变化,标志着矿体的暴露深度从西向东存在着由深至浅的规律变化,最深隐伏达1047m,矿体整体西高东低,向东侧伏(隐伏);(2)寒山矿区总平均隐伏系数Rs为6.1,预测资源量为106.9t,因此推测寒山金矿床为特大型金矿床。与其西南部的鹰咀山金矿进行横向对比表明,寒山金矿体与鹰咀山金矿一样也是西高东低,向东侧伏(隐伏),在两金矿区之间V2变化在40至60之间还缺少应有的数据,因此可以推断在鹰咀山与寒山矿之间可以找到V2变化在40至60之间范围的矿体,这在今后的地质勘查工作中应引起高度的重视。 |
| 关 键 词： | 铅同位素示踪 隐伏矿定量预测 寒山金矿 北祁连西段 甘肃省 |
| 文章编号： | 1001-1552（2007）04-0441-11 |
| 修稿时间： | 2006-11-10 |
APPLICATION OF PB ISOTOPE FOR QUANTITATIVE FORECASTING OF BLIND ORE DEPOSITS:A CASE STUDY FROM THE HANSHAN GOLD DEPOSIT IN THE NORTHWESTERN QILIAN OROGENIC BELT |
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| LI Zhonglan,CUI Xuejun,LIU Hongying,WANG Ran,Xu Lifeng.APPLICATION OF PB ISOTOPE FOR QUANTITATIVE FORECASTING OF BLIND ORE DEPOSITS:A CASE STUDY FROM THE HANSHAN GOLD DEPOSIT IN THE NORTHWESTERN QILIAN OROGENIC BELT[J].Geotectonica et Metallogenia,2007,31(4):441-451. | |
| Authors: | LI Zhonglan CUI Xuejun LIU Hongying WANG Ran Xu Lifeng |
| Institution: | 1. Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, GD 510640, China ; 2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China ; 3. Heze Bureau of Land and Resources, Heze City, Shandong 274000, China |
| Abstract: | This paper applies a new method of Pb isotopes for predicting the blind ore bodies of the Hanshan gold deposit in the northwestern Qilian orogenic belt. The results show that: (1) The V1 and V2 values display regular increase from west to east, suggesting an obvious decrease of the ore body revelation depth from west to east, with the largest revelation depth of the blind ore body up to 1047 m. Meanwhile, the blind ore body thins out toward the east. (2) The average hidden coefficient (Rs) of the Hanshan ore deposit is 3.68, indicating that the predicted reserves for the ore deposit is around 107 tons of gold. The Hanshan gold deposit is probably a superlarge gold deposit. Similarly, the hidden ore bodies of the western Yingzuishan gold deposit also show eastward dipping. The absence of Pb isotope data with V2 between 40 and 60 in these two gold deposits suggests the possible existence of ore bodies, which are not yet found at present. Our results imply that more attention should be paid in looking for such blind ore bodies in future exploration of these two gold deposits. |
| Keywords: | Pb isotope quantitative prediction blind ore body Hanshan gold deposit northwestern Qilian orogenic belt |
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