陕西驾鹿金矿床发现40种含氧金矿物──地质产状、矿物组合与成因探讨

40 Kinds of Oxygen bearing Gold Minerals Discovered in Jialu Gold Mine, Shaanxi Province On Geological Occurrence, Mineral Assemblage and Genesis

显微结构分析表明，驾鹿金矿床发现的４０种含氧金矿物主体与黄铁矿、碲金矿和石英共生，显然属于内生热液成因。依据金的地球化学行为，以及区内含氧金矿物富含Ｔｅ（１０％～２０％左右）和含不等量Ｍｎ的成分特征，分析认为该矿床成矿元素（Ａｕ）主要是在碲酸及硫酸溶液中并有氧化剂ＭｎＯ２存在的条件下迁移、富集成矿的。

The microstructure analyses for 40 kinds of oxygen bearing gold minerals in Jialu gold mine indicate that they are closely associated with pyrite, calaverite and quartz,suggesting that the genesis is related to endogenetic hydrothermal process. From the geochemical behavior of gold, and the oxygen bearing gold minerals enriched in Te (10%～20%±) and bearing minor Mn, it is considered that the gold of this mine is migrated and enriched in sulfate solution with MnO 2.