山东烟台杜家崖微细浸染型金矿矿石工艺矿物学研究

TECHNOLOGICO—MINERALOGICAL STUDY ON THE GOLD ORE OF FINE DISSEMINATION TYPE FROM DUJIAYA IN YANTAI,SHANDONG

摘要:

杜家崖金矿,是我局第三地质队在胶东地区元古界粉子山群、蓬莱群中首次发现的新类型金矿。矿石主要特征含金丰度低,为2.35×10~(10),金矿物微细,显微金(6.5μm 以上)占总金量的3.33%、而次显微金和胶体金(0.5μm 以下)占总金量的96.67%,载金矿物为褐铁矿。该类型金矿完全不同于我省目前已发现的焦家式或其他类型金矿床。配合柱浸可浸性提金试验,对金矿石工艺矿物学特征进行了较系统的研究。认为该矿是一种微细浸染型金矿床。

Abstract:

Dujiaya gold deposit is one of a new type firt discovered in the Proterozoic Fenzishan and Penglai groups by the Third Geological Brigade of Shandong Bureau of Geology and Mineral resources.The ore is mainly characterized by lower gold abundance(2.35×10~(-6))and fine auriferous minerals,with microscopic gold(over 0.5μm)accounting for 3.33% of the total, while submicrosc6pic and colloidal gold for 96.67%.The gold-carrying mineral is limonite The type of gold depoist is completely different from the Jiaojia t...