山东乳山下初金矿地质特征及成矿规律分析

Analysis on geological characteristics and metallogenic regularity of gold deposit in Shandong of Rushan at the beginning of next month

下初金矿为胶东牟平-乳山金矿带南段的一个小型金矿床。矿区内出露地层主要为古元古代荆山群变质岩及新生代第四系,构造以中生代断裂构造为主,其中含金矿化蚀变带受NNE向断裂控制。主要矿体呈北北东向展布,矿石类型主要为黄铁矿化石英脉,矿化具多期活动特点。在分析成矿规律的基础上,应加大矿区深部及外围的找矿力度,以期发现新的金矿远景区,进而指出了深部找矿的方向。

The lower early gold deposit is a small gold deposit in the south section of Muping Rushan gold belt, Jiaodong. In the mining area of outcropping strata are mainly Paleoproterozoic Jingshan metamorphic rocks and Mesozoic Cenozoic quaternary structure, with the main faults, including gold mineralization alteration zone controlled by NNE trending faults. The main ore bodies are NNE trending. The ore types are mainly pyrite, quartz veins and mineralization with many stages of activity. Based on the analysis of metallogenic regularity, we should increase the prospecting efforts in the deep and peripheral regions of the mining area in order to discover new gold prospect areas, and then point out the direction of deep prospecting.