Study on the digital information for Earth and Planetary Materials Database(MINC)

MINC数据库一直在东京大学计算机中心的旧HITAC计算机系统的TOOL-IR系统下运行。我们将MINC转换为在Microsoft Windows和Access97下运行的个人计算机。编写了一个VBA程序，通过对每个数据段使用REFCODE来转换Access系统的旧MINC数据。该数据库包括书目数据、晶体数据、原子坐标、温度因素、阳离子周围配位多面体的占位信息以及陨石、月球和陆地样品中主要矿物的化学成分。可以在Convert菜单上选择几种数据类型。数据搜索和检索可以对关键字项目进行，如化合物名称，矿物名称，化学式，作者，期刊，发行年份，空间组，成分（在给定范围内最多12个氧化物wt.%值）和Z.一个CD-ROM与转换的Access数据与VBA应用程序为合作的科学家提供。为了显示电子探针显微分析（electronic Probe Micro analysis， EPMA）所测矿物化学成分的分析点在薄片照片上的位置，我们试图建立获得陨石抛光薄片（PTS）照片的最佳方法，用于EPMA方法。这些照片将在上述数据库中使用。一些数码相机已经经过测试，可以在显微镜上获得最高质量的照片。我们发现数码相机系统的对焦方法不容易获得最佳的对焦照片。今年，我们增加了两个不同大小（大小不同）的jpeg格式的数字图像，以附加在Access97的任何数字数据上。我们可以将矿物或陨石样品的照片粘贴到小框上，将PTS照片粘贴到大框上。

MINC database has been running at Computer Center of Univ. of Tokyo under TOOL-IR system of the old HITAC computer system. We converted our MINC to run for personal computers under Microsoft Windows and Access97.A VBA program has been written to convert old MINC data for the Access system by employing REFCODE for each segment of data. This database includes bibliographic data, crystal data, atomic coordinates, temperature factors, site occupancies information on coordination polyhedra around cations, and chemical compositions of major minerals in meteorites, lunar and terrestrial samples. Several data types can be selected on the Convert Menu. Data search and retrieval can be performed on keyword items, such as Compound name, Mineral names, Chemical Formula, Author, Journal, Issue year, Space group, Compositions (up to 12 oxide wt.% values within the given ranges) and Z. A CD-ROM with converted Access data with VBA application program is available for scientists in cooperative basis.In order to show the locations of the analysis points for chemical compositions of minerals measured by Electron Probe Micro Analysis (EPMA) on the thin sectipn photographs, we tried to establish the best method to obtain photographs of polished thin sections (PTS) of meteorites used for the EPMA method. These photographs are to be used in the above database. A couple of digital cameras have been tested to obtain the best quality photographs on a microscope. We find that a focusing method by the digital camera system is not easy to obtain the best focused photographs.This year we added two digital images in the jpeg format of different sizes (small and large) to be attached to any numerical data of Access97. We can paste photographs of samples of minerals or meteorites to the small frame, and PTS photographs to the large frame.