湖南黄金洞金矿毒砂中Au赋存状态的电子探针研究

湖南黄金洞金矿毒砂中Au赋存状态的电子探针研究

张文兰胡文宣胡受奚周顺之陈钢

[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

收稿日期:1997-09-20 修回日期:1997-09-20 出版日期:1997-09-20 发布日期:1997-09-20

STUDY ON THE MODE OF GOLD IN ARSENOPYRITE FROM HUANGJINDONG GOLD DEPOSIT，HUNAN, BY USING ELECTRON PROBE MICROANALYSIS

Zhang Wen-lan1, Hu Wen-xuan2,Hu Shou-x2i, Zhou Shun-zh2, Chen Gang2

1. State Key Laboratory for Mineral Deposits Research, Nanjing University, Nanjing, 210093; 2. Department of Earth Sciences, Nanjing University, Nanjing, 210093

Received:1997-09-20 Revised:1997-09-20 Online:1997-09-20 Published:1997-09-20

摘要/Abstract

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。

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.

张文兰胡文宣胡受奚周顺之陈钢. 湖南黄金洞金矿毒砂中Au赋存状态的电子探针研究[J]. J4.

Zhang Wen-lan1, Hu Wen-xuan2,Hu Shou-x2i, Zhou Shun-zh2, Chen Gang2. STUDY ON THE MODE OF GOLD IN ARSENOPYRITE FROM HUANGJINDONG GOLD DEPOSIT，HUNAN, BY USING ELECTRON PROBE MICROANALYSIS[J]. J4.