| 湖南黄金洞金矿毒砂中Au赋存状态的电子探针研究 |
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| 引用本文： | 张文兰,胡文宣.湖南黄金洞金矿毒砂中Au赋存状态的电子探针研究[J].高校地质学报,1997,3(3):256-262. |
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| 作者姓名： | 张文兰 胡文宣 |
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| 作者单位： | [1]南京大学内生金属矿床成矿机制研究国家重点实验室 [2]南京大学地球科学系 |
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| 基金项目： | 国家黄金管理局地质科研资助 |
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| 摘 要： | 本文利用ＪＸＡ－８８００Ｍ超大型电子探针，以湖南黄金洞金矿含金毒砂为研究对象。利用金特征Ｘ－射线扫描方法和微区含金含量，对不可见金赋存状态的研究方法和温试条件进行了探索，先观察背散射电子图像，排除金在含金矿物毒砂中呈显显微颗粒存在的可能性，继而用ＬｉＦ晶体测定金Ｌ＝８８．７６Ｌａｌ峰位，然后逐渐放大倍数（ｘ３００，ｘ１０００，ｘ５０００，ｘ３００００，ｘ２０００００）进行金特征，Ｘ－射线连续测量，，结果发现金元素总
是均匀分布在重砂中，从而证实了金呈品格金形式存在的推测。
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| 关 键 词： | 金矿矿物 毒砂 金 赋存状态 电子探针 |
| 收稿时间： | 1997-09-20 |
| 修稿时间： | 1997-09-20 |
STUDY ON THE MODE OF GOLD IN ARSENOPYRITE FROM HUANGJINDONG GOLD DEPOSIT,HUNAN, BY USING ELECTRON PROBE MICROANALYSIS |
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| Zhang Wenlan.STUDY ON THE MODE OF GOLD IN ARSENOPYRITE FROM HUANGJINDONG GOLD DEPOSIT,HUNAN, BY USING ELECTRON PROBE MICROANALYSIS[J].Geological Journal of China Universities,1997,3(3):256-262. |
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| Authors: | Zhang Wenlan |
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| Institution: | 1. State Key Laboratory for Mineral Deposits Research, Nanjing University, Nanjing, 210093; 2. Department of Earth Sciences, Nanjing University, Nanjing, 210093 |
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| Abstract: | The paper studies the mode of gold in arsenopyrite (Asp) of Huangjindong gold deposit, Hunan Province. The special X-ray scanning is applied to approach the existing state of invisible gold in Asp, and analysis condition is investigated. Back scatter electron image is firstly used to determine whether grain-gold occurs, then, using LIF crystal for measurement of AuL=88.76 Lal peak. The selected Au-bearing Asp (without visible gold) is continuously analyzed by means of special X-ray at increasing magnification(×300、× 1000、×5000、×30000、×200000). It is found that gold element always evenly distributes in Asp. The result suggests that gold exists as lattice-Au mode in arsenopyrite. |
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| Keywords: | Au bearing arsenopyrite EPA special X ray existing state of gold lattice gold |
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