权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Study of ores using ore microscope and EPMA.

使用矿石显微镜和 EPMA 研究矿石。

基本信息

批准号：
02302032
负责人：
YUI Shunzo
金额：
$ 4.48万
依托单位：
Hokkaido University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Co-operative Research (A)
财政年份：
1990
资助国家：
日本
起止时间：
1990 至 1992
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-02302032/
关键词：
Digital image processing Channelling patterns Sphalerite Condition of deposition Data reduction program 色調と少量成分鉄隕石 IMA COM 黄銅鉱病変 IBMタイプパソコンデ-タネットワ-ク離溶組織樹枝状組織

项目摘要

The purpose of this co-operative study is to coordinate researchers of ores using ore microscope and EPMA(Electron micro-probe analyzer), both of which are the most important facilities of the study of ores,and to correspond with COM(Commissin on Ore Minerals) of IMA(International Association of Mineralogy).One of the recent progress of EPMA study of ore is digital image processing of backscattering electron image and of a huge number of X-ray intensity data obtained at an area of ore specimen. The latter is easy to represent quantitative concentration of the elements concerned although it needs complicated mechanical aperatus and big memory in the attached computer. The former is more acurate in spatial resolution and needs smaller size in computer memory but it can be quantitatively evaluated only in the case of the known binary or pseudo-binary system.Recent sensitive detector of backscattered electron can easily discriminate minute difference in the electron intensities due to the different crystallographic orientation channelling pattern, which might puzzle inexperienecd people.Sphalerite tends to resist to annealing due to environmental change after its deposition from hydrothermal solution. Texture and structure of sphalerite and its hetrerogeneity within a grain is often detected using ore microscope and EPMA. We, therefore, propose COM to open a syposium on the genetical meaning of sphalertite at IMA 1994 meeting in Italy.Computer automated or semi-automated EPMA is widely used. We need sometimes more sophisticated treatment of the data, and need one personal program of data reduction for one specific purpose. Several programs are developed and revised.

此次合作研究的目的是协调矿石研究人员使用矿石研究最重要的设备——矿石显微镜和EPMA（电子微探针分析仪），并与IMA（国际矿物学协会）的COM（Commissin on Ore Minerals）相对应。EPMA矿石研究的最新进展之一是背散射电子图像和大量X射线的数字图像处理。在矿石样本区域获得的强度数据。后者虽然需要复杂的机械装置和附属计算机中的大内存，但很容易表示有关元素的定量浓度。前者的空间分辨率更精确，需要的计算机内存更小，但只有在已知的二元或伪二元系统的情况下才能进行定量评估。最近灵敏的背散射电子探测器可以很容易地区分由于不同的晶体取向沟道模式而导致的电子强度的微小差异，这可能会让没有经验的人感到困惑。闪锌矿由于环境原因往往会抵抗退火。从热液中沉积后发生变化。通常使用矿石显微镜和 EPMA 来检测闪锌矿的纹理和结构及其晶粒内的异质性。因此，我们建议COM在意大利IMA 1994年会议上召开关于闪锌矿遗传意义的研讨会。计算机自动化或半自动化EPMA得到广泛应用。有时，我们需要对数据进行更复杂的处理，并且需要一种针对特定目的的个人数据缩减程序。制定和修订了一些计划。