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在温度为250℃的热水体系中金的行为受pH值和氧逸度的控制。在体系中存在有黄铁矿和泥质蚀变组合的稳定条件下,金以双硫络合物形式迁移;在含大量砷的体系中,硫化砷络合物对金的迁移则起着非常重要的作用。在上述条件下,氧化、稀释和冷却可引起金的沉淀。对于低温热水矿床中的金,吸附作用和共沉淀作用则可能是导致其沉淀的主要因素,再
The behavior of gold in a hot water system at a temperature of 250 ° C is governed by pH and oxygen fugacity. Gold is migrated as a disulfide complex under stable conditions in which there is a combination of pyrite and muddy alteration in the system; in the system containing a large amount of arsenic, the arsenic sulfide sulfide complex plays a very important role in the migration of gold Important role. Under the above conditions, oxidation, dilution and cooling can cause the precipitation of gold. For the gold in the low-temperature hot-water deposits, adsorption and coprecipitation may be the main factors leading to precipitation