博茨瓦纳博茨瓦纳所有的金矿脉都埋藏于太古代地层中,如该国东北角围绕弗朗西斯敦的塔蒂和文巴片麻岩带。一般而言,非洲许多金矿的发现比欧洲人来勘查要早数百年。在这个国家的45座矿山中,仅一座是在被殖民化以后才发现的。 Botswana Botswana All the gold veins are buried in the Archean strata, such as the Tadi and Francine Gneiss belt around the northeast corner of France. In general, the discovery of many gold deposits in Africa is hundreds of years earlier than the European exploration. Only 45 of the 45 mines in the country were discovered after being colonized.