摘要
通过对金、银、铂族元素的氢化物、羰基化合物理化性质、贵金属矿物主要和次要化学成分、贵金属矿物的共伴生矿物组合、有关矿物流体包裹体化学成分、类地行星概况、生产实验等相关问题的讨论 ,认为金、银、铂族元素主要呈单质及其合金氢化物、单质羰基化合物、单质羰基氢化物迁移的。它们随岩浆、热液、热气迁至地壳浅部 ,由于减压、降温、氧逸度显著加大、Eh、pH值发生变化 ,H2 、CO逃逸、氧化 ,形成贵金属的单质及合金矿物 ,有的还能与硫、硫化氢作用形成贵金属的硫化矿物和硫盐矿物。
An analysis of physical and chemical properties of hydride and carbonyl compounds of Au,Ag and PGE,major and secondary chemical compositions and paragenetic ssociation of precious metal minerals,chemical composition of fluid inclusions,composition of terrestrial planet and related experimental results indicate Au,Ag and PGE were migrated to upper level in crust as elements and their hydrides,carbonyl compounds and carbonyl hydrides with mgmatic,hydrothermal and gas-liquid fluids and precipitated as metals and alloys,sulfides and sulfosalts by decrease in pressure and temperature and increase in oxygen fugacity and change in Eh and pH values and so on.
出处
《四川地质学报》
2002年第4期210-218,共9页
Acta Geologica Sichuan
