山东栖霞前山顶矿区Ⅲ~#、Ⅳ~#金矿地质特征及成因

Geological Characteristics and Genesis of the Ⅲ~# and Ⅳ~# Gold Deposits in Qianshanding Mining Area in Qixia City,Shandong Province

山东栖霞前山顶矿区Ⅲ#、Ⅳ#金矿床位于栖霞—蓬莱成矿带内,为栖霞地区东南部较典型的缓倾斜薄层石英脉型金矿床。矿区矿体受NNE、近EW向断裂控制,呈薄层脉状展布,主要分布于郭家岭序列西石硼单元的斑状中粒含角闪二长花岗岩和罗家单元的含斑状中粒含黑云二长花岗岩内。结合区内地质工作成果,对区域地质背景、矿区及矿床地质特征进行了详细分析,并对矿床成因进行了探讨,认为区内金矿床属岩浆中—低温交代-充填热液型金矿床,对于区内进一步开展金矿找矿工作有一定的参考价值。

The Ⅲ~#and Ⅳ~#gold deposits of Qianshanding mining area in Qixia city,Shandong province are located in the Qixia-Penglai metallogenic belt,they are belongs to the gently inclined and lamellate quartz-vein type gold deposits that is distributed in the southeast of Qixia city. The ore-bodies of Qianshanding mining area are controlled by the fractures with the trends of NNE and near EW,they are distributed with the shape of veins,and they are distributed in the particle containing monzonitic hornblende granite of Xishipeng unit in Guojialing sequenceand biotite-bearing monzonitic granite of Luojia unit in Guojialing sequence. According to the geological prospecting results of the Qianshanding mining area,the regional geological background,geological characteristics of the mining area and gold deposits are analyzed in detail,based on the above analysis results,the gold deposits genesis of the Qianshanding mining area is discussed,it is show that the genesis of the Ⅲ~#and Ⅳ~#gold deposits in Qianshanding mining area in Qixia city,Shandong province is belongs to the magmatic medium-low temperature hydrothermal gold deposit. The above study results of this paper can provide some reference for the further gold deposit prospecting work in the mining area.