含金硫化物基岩区红土型金矿的成矿作用  

MINERALIZATION OF LATERITE TYPE GOLD DEPOSITS ON BEDROCK AREA WITH GOLD BEARING SULFIDE

作　　者：李志群 

机构地区：[1]西南有色地质勘查局地质研究所

出　　处：《矿产与地质》1996年第6期380-387,共8页Mineral Resources and Geology

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.

关 键 词：金矿床 成矿作用 红土型金矿 含金流化物 基岩区 

分 类 号：P618.510.5[天文地球—矿床学]