一般认为,沉积岩中的工业金矿床只有砂金和砾岩金矿,它们都是纯机械搬运作用的结果。但事实表明,除机械作用外,化学作用、生物作用和物理化学作用对金在沉积物中的聚集都是不可忽视的。 1.“狗头金”的形成与砂金矿的再生澳大利亚和苏联南乌拉尔是世界上发现“狗头金”最多的两个地区,南乌拉尔曾获得俄国最大的的“狗头金”(36公斤)。澳大利亚曾发现 It is generally accepted that the industrial gold deposits in sedimentary rocks are only placer gold and conglomerate gold, both of which are the result of purely mechanical handling. However, it has been shown that chemical, biological and physico-chemical interactions can not be neglected by gold except in mechanical processes. 1. The formation of “kobold” and the regeneration of placer gold Australia and the Soviet Union, the southern Urals, are the two regions where the “kotomes” are found in the world. Southern Urals won Russia’s largest “kobold” (36 kg). Australia has found