摘要
实验表明，在含金硫化物基岩区，硫代硫酸金络阴离子团和硫酸金络阴离子团是金在表生条件下的主要迁移形式，它们的沉淀与铁、锰氢氧化物的形成有密切联系。金的表生迁移—沉淀条件除一般的表生地质条件外，还有特殊的物理化学—生物化学条件。络阴离子团的地球化学性质，控制着红土型金矿床的垂向分带与金的次生富集。
It is indicated on the experimental studies that the complex anion groups of gold hyposulfate and gold sulfate are the major migration forms of gold under supergenesis.Their sedimetation is closely related to the formation of iron and magnesium hydroxide. The supergenetic migration and sedimentation condition of gold are in a special physicochemical and biochemical condition,besides the normal supergenetic condition. The geochemical nature of the complex anion group controlled the vertical zoning and secondary enrichment of gold in the laterite gold deposits.
出处
《矿产与地质》
1996年第6期380-387,共8页
Mineral Resources and Geology
关键词
金矿床
成矿作用
红土型金矿
含金流化物
基岩区
Laterite gold deposit,Complex anion group,Physicochemical and biochemical condition,Vertical zoning
