江苏伏牛山铜矿床伴生金的赋存状态研究

伏牛山矿床是一个含伴生金的矽卡岩型铜矿床，伴生金的平均品位为０．３６ｇ／ｔ，伴生银的平均品位为１２．４ｇ／ｔ。本文通过多种分析测试（如：相关分析，配分计算，矿相显微镜观察，透射电镜研究，分步溶解，物相分析等），对伴生金的赋存状态做了较为详细的研究。结果表明：金的存在与黄铜矿关系密切；金的存在形式主要为显微金、次显微金及少量晶格金，其中显微金主要存在于黄铜矿中，次显微金及晶格金主要存在于黄铁矿中。

The Mode of Occurrence of Associated Gold in the Funiushan Copper Deposit,Jiangsu Province

he Funiushan ore deposit is a gold-bearing skarn type copper deposit with the average grade of associated gold being 0.36 g/t and that of associated silver being l2.45 g/t.Fairly detailed studies have been made on the mode of occu-rence of associated gold by using various analytical methods such as correla-tion analysis,partition calculation,ore microscopic observation,transmission electron microscopy,separate dissolution and phase analysis.The results show that the presence of gold is closely related to chalcopyrite,and that gold occurs in three forms,i.e.microscopic gold,submicroscopic gold and a small amount of lattice gold, with the last two forms mainly existent in pyrite.