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在玄武岩表面及上覆的海进沉积层序之底部发育的早元古代古土壤中含有黄铁矿,在某些情况下,这些黄铁矿含金.层状矿化延伸数百公里.虽说这种矿化可用几种成因模式加以解释,但作者得出了这样的结论:即金矿化发生在成壤作用和(或)成岩作用时期.人们认为,富含硫化物的地下水将金自玄武岩和古土壤B层中淋滤出来,随后因HS~-活动的减弱而沉淀.据信,金的沉淀是因大气氧化作用及与古土壤A层富铁淋滤液发生反应而造成的,早先存在的氧化铁矿物的黄铁矿化,亦对金的沉淀产生了影响.可以断定,成壤的金矿胎至少可对维特瓦特斯兰德型(Witwatesrand TyPe)矿床中金的成因作出某些解释.
Pyrites are present in the Paleoproterozoic paleo-soils that form at the bottom of basaltic sediments and overlying marine sedimentary sequences, and in some cases these pyrites are gold-bearing, layered mineralization extending for hundreds of kilometers. This mineralization can be explained in several generative modes, but the authors conclude that gold mineralization occurs during pedogenesis and / or diagenesis. It is believed that sulfide-rich groundwater converts gold from Basalt and Paleozoic B layer, and subsequently precipitated due to the weakened HS ~ - activity, it is believed that the gold precipitation is due to atmospheric oxidation and reacts with iron-rich leached leached from layer A of the ancient soil, The pyrite mineralization of the existing iron oxide minerals also had an effect on the precipitation of gold.It can be concluded that pedogenesis of gold mines at least allow the formation of gold in the Witwatesrand TyPe deposit Some explanation.