摘要
陨石是在太阳系早期历史的过程中形成的,可提供太阳系组成的物理和化学信息,这些信息代表了太阳系形成时的时空条件,因此陨石具有巨大的科研价值。陨石收集入库后首先要对其进行精确的基础分类工作,制作陨石样品进行光薄片是必不可少的。一方面陨石样品非常珍贵,要求制作标准的0.03mm的光薄片,在样品不被破坏和浪费的要求下进行光片制作存在相当大的难度,而地球岩石样品只需进行光片或者薄片的制作;另一方面绝大多数陨石中含有金属,由于金属的应力及其导热等特性,在薄片的制作过程中,容易产生金属脱落,样品损坏等情况,所以大部分岩石磨片室都处理不好陨石样品。笔者参与了500块的陨石样品光薄片制作,根据陨石光薄片制作的经验描述陨石样品处理的基本流程,及其在制作过程中常出现的问题和处理技巧,从而提高国内陨石样品的处理方法与技术。
The meteorite is formed in the process of the early history of the solar system. It can provide the physical and chemical information of the solar system, and these information represents the time and space conditions of the solar system in the formation process. So the meteorite has enormous scientific research value. The first step is the basic classification work after the meteorites are collected into the storage, it is necessary to make optical slice and thin sheet of meteorite samples for identification. On one hand, meteorite samples are very valuable,it is very difficult to make standard 0.03mm optical slice at the request of that the sample was not wasted and not destroyed. As the earth stone is just used to make polished sheet or thin slice sample. On the other hand, most meteorites containing metal,due to the stress of the metal and its characteristics of thermal conductivity, it is easy to produce metal loss and sample damage in the process of optical slice production. So many rock grinding laboratories cannot manage with meteorite samples very well. The author had participated in the optical slice and thin sheet production of about 500 meteorite samples. According to the experience of meteorite sample production, the basic procedure of meteorites sample processing is described of the problems and technology in the production process in order to improve the processing method and technology of meteorite samples.
出处
《矿产与地质》
2017年第1期158-165,共8页
Mineral Resources and Geology
基金
国家自然科学基金(编号:41173077)
极地标本资源共享平台(编号:2005DKA21406-9)联合资助
关键词
陨石
光薄片制作
样品处理
meteorite,optical slice and thin sheet production, sample processing
