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金刚石是一种极为稀有、极其贵重的非金属矿物。据不完全统计,全世界目前保有金刚石储量约为21亿克拉,推测储量约30亿克拉。金刚石资源最多的是扎伊尔;第二是澳大利亚;居第三位的是博茨瓦纳,其金刚石质量较好,有的矿山宝石级金刚石占80％;原苏联居第四位;其次是南非,坦桑尼亚、加纳、安哥拉等国。我国有金刚石资源,但储量不大。金刚石原生矿床有金伯利岩型和钾镁煌斑岩型两种类型,金伯利岩为一种很少见的,在特殊地质条件下形成的岩石,由于其数量少,体积小,蚀变强烈,故不易识别和寻找。八十年代初期,全世界约在20多个国家找到金伯利岩体约5000个,其中岩管约
Diamond is an extremely rare and extremely valuable non-metallic mineral. According to incomplete statistics, the world currently holds about 2.1 billion carats of diamond reserves and an estimated reserve of 3 billion carats. Diamond is the largest source of Zaire; the second is Australia; third place is Botswana, the diamond quality is better, some mining gem diamonds accounted for 80%; the former Soviet Union ranked fourth; followed by South Africa, Tanzania , Ghana, Angola and other countries. My country has diamond resources, but reserves are not large. There are two kinds of kimberlite and potashite lamprophyres in the primary diamond deposits. The kimberlite is a very rare rock formed under special geological conditions. Due to its small number, small volume and strong alteration, Not easy to identify and find. In the early 1980s, about 5,000 kimberlite bodies were found in about 20 countries around the world,