我国幅员广阔,人口众多,这为陨石的寻找和发现提供了良好的条件。据统计,我国现有陨石约80块,然而,遗憾的是,迄今还没有一块具有重要科学价值的碳质球粒陨石。 1983年6月25日,在陕西宁强地区坠落了一块陨石,经初步研究,发现该陨石与世界闻名的阿仑德陨石非常相似。在这基础上,我们用高灵敏度、且具多元素分析能力的中子活化法 My country has a vast territory and a large population, which provides good conditions for the search and discovery of meteorites. According to statistics, there are about 80 existing meteorites in our country. However, to date, there is not yet a piece of carbonaceous chondrites with important scientific value. On June 25, 1983, a piece of meteorite crashed into the Ningqiang area in Shaanxi Province. After a preliminary study, the meteorite was found to be very similar to the world-famous Allend meteorite. On this basis, we use neutron activation method with high sensitivity and multi-element analysis ability