在巴西的Carajas地区,红土中重要的金矿床正在开发中。Carajas地区巴伊亚州Igarape矿床的红土剖面可划分为6个层位:基底未风化的岩石,接着是腐泥土层、浅色带、杂色带、铁质带和表土层。在铁质带,铁的氧化物-氢氧化物结核中发现有自然金和银金矿。在这里圈出了金矿体。大部分金的粘度小于 In the Carajas region of Brazil, important gold deposits in the laterite are under development. The Carajas section of the Igarape deposit in Bahia can be divided into six horizons: basal unweathered rock, followed by saprolite, light, variegated, ferrous and topsoil. In the iron belt, iron oxide - hydroxide nodules found in natural gold and silver gold. Here the circle of gold ore body. Most of the viscosity of gold is less than