【摘要】 张家口地区主要金矿床金的矿化富集机制研究莫测辉，王秀璋，程景平，梁华英（中国科学院广州地球化学研究所，广州５１０６４０）关键词金矿床，矿化作用，富集机制，张家口地区冀西北张家口金矿化集中区金矿床按赋矿岩石类型可分为变质岩（混合岩）型和碱性岩型金矿，分...更多还原

【Abstract】 Dongping gold deposit in alkaline intrusives and Xiaoyingpan gold deposit in metamorphic rocks are both belong to reworked genesis related to meteoric water, Their mineralizing mechanism includes three processes: activation, migration, and deposition of gold. Gold in host rocks is activated by heated meteoric water (formation water contained in Xiaoyingpan gold deposit), then migrated mainly in the form of Au (HS). In addition, colloform in the Dongping gold deposit is important to An migration. Adsorption of minerals, mixture of fluids (Xiaoyingpan gold deposit ),and immiscibility of fluid (Dongping gold deposit) are principal factors to lead to deposition and enrichment of gold.更多还原