胶东蓬莱-栖霞金矿带侯格庄金矿流体包裹体特征及其地质意义  

Characteristics and Geological Significance of Fluid Inclusions in Hougezhuang Gold Deposit in Penglai-Qixia Gold Belt in Jiaodong Peninsula

作　　者：李敏 刘传娥 迟乃杰 张伟 解玉凤 王秀凤 孙雨沁 李增胜 郭广军 LI Min;LIU Chuan'e;CHI Naijie;ZHANG Wei;XIE Yufeng;WANG Xiufeng;SUN Yuqin;LI Zengsheng;GUO Guangjun(Key Laboratory of Gold Mineralization Processes and Resource Utilization,MNR,Shandong Provincial Key Laboratory of Metallogenic Geological Process and Resource Utilization,Shandong Institute of Geological Sciences,Shandong Ji'nan 250013,China;No.801 Hydrogeological Engineering Geological Brigade of Shandong Provincial Bureau of Geology and Mineral Resources,Shandong Ji'nan 250014,China;Earth Science and Engineering College of Shandong University of Science and Technology,Shandong Qingdao 266590,China;Weifang Architectural Design and Research Institute,Shandong Weifang 261013,China)

机构地区：[1]山东省地质科学研究院,国土资源部金矿成矿过程与资源利用重点实验室,山东省金属矿产成矿地质过程与资源利用重点实验室,山东济南250013 [2]山东省地质矿产勘查开发局八〇一水文地质工程地质大队,山东济南250014 [3]山东科技大学地球科学与工程学院,山东青岛266590 [4]潍坊市建筑设计研究院有限责任公司,山东潍坊261013

出　　处：《山东国土资源》2022年第10期10-18,共9页Shandong Land and Resources

基　　金：山东省地质勘查研究委托项目,鲁勘字〔2022〕(12号):山东省自然科学基金项目(ZR2019PD019);省部级重点实验室开放课题(kfkt201810)。

摘　　要：侯格庄金矿位于胶东蓬莱-栖霞金矿带的虎路线金矿田内,是矿田内典型的石英脉型金矿,矿体主要呈脉状与透镜状分布于中生代郭家岭花岗岩内部的断裂体系中。本文结合野外与岩相学观察、包裹体测温与拉曼光谱分析,将侯格庄金矿的热液阶段划分为黄铁矿-石英阶段(Ⅰ)、金-石英-黄铁矿阶段(Ⅱ)、金-多金属硫化物阶段(Ⅲ)和石英-碳酸盐阶段(Ⅳ)。将其流体包裹体划分为单相包裹体(Ⅰ型)、气液两相包裹体(Ⅱ型)、含CO_(2)三相包裹体(Ⅲ型),其中单相包裹体又分为纯液相包裹体(Ⅰ_(a)型)和纯气相包裹体(Ⅰ_(b)型)。侯格庄金矿流体包裹体的均一温度为141~332℃,集中在211~252℃,盐度为2.74%~8.81%NaCl eqv,集中在3.58%~4.51%NaCl eqv。成矿流体为中-低盐度和中-低温CO_(2)-H_(2)O-NaCl流体。结合蓬莱金矿带H-O同位素研究,金矿初始和成矿期流体主要为岩浆流体,随着成矿作用的进行,有大气降水的混入,成矿流体为岩浆水与大气水的混合流体。Hougezhuang gold deposit is located in Huluxian goldfield in Penglai-Qixia gold belt in Jiaodong Peninsula.It is a typical quartz vein type gold deposit.The ore bodies are mainly vein like and lenticular distributed in the faults within Mesozoic Guojialing granite.The metallogenic stages of Hougezhuang gold deposit are divided into four stages based on the field,microscopic observations,fluid inclusion microthermometry and Raman spectroscopy analysis,they are Pyrite-quartz stage(Ⅰ),gold-quartz-pyrite stage(Ⅱ),gold-polymetallic sulfide stage(Ⅲ)and quartz-carbonate stage(Ⅳ).The fluid inclusions are mainly divided into three categories,they are single-phase inclusions(typeⅠ),gas-liquid two-phase inclusions(typeⅡ)and three-phase inclusions containing CO_(2)(type III).The single-phase inclusions are further divided into pure liquid inclusions(typeⅠ_(a))and pure vapor inclusions(typeⅠ_(b)).The homogeneous temperature of fluid inclusions is 141~332℃,and is mainly concentrated at 211~252℃.The salinitie is 2.74%~8.81%NaCl eqv,and is concentrated at 3.58%~4.51%NaCl eqv.The ore-forming fluids are medium-low salinity and medium-low temperature CO_(2)-H_(2)O-NaCl fluids.Combining with the H-O isotopic compositions of gold deposits in Penglai gold belt,it is showed that the fluids in the initial and metallogenic periods are mainly magmatic fluids.The ore-froming fluids are mixed fluids of magmatic and atmospheric water.

关 键 词：蓬莱-栖霞金矿带 侯格庄金矿 流体包裹体 地质意义 胶东 

分 类 号：P59[天文地球—地球化学]