山东省平度市大庄子金矿流体包裹体研究  

FLUID INCLUSIONS IN THE DAZHUANGZI GOLD DEPOSIT IN PINGDU COUNTY, SHANDONG

作　　者：连国建[1] 史维全 门树宁 刘莉[1] 

机构地区：[1]中国冶金地质勘查工程总局山东正元资源勘查研究院,济南250014

出　　处：《地质与勘探》2005年第1期28-32,共5页Geology and Exploration

基　　金：国家自然科学基金资助项目(编号:49973001);中国冶金地质勘查工程总局及山东局科研基金的资助。

摘　　要：山东省平度市大庄子金矿含金硅化体及石英脉中流体包裹体发育程度一般,且粒度偏小,包裹体大小多为6～12μm,包裹体类型主要为气液二相包裹体、液相包裹体(LH2O+LCO2),见少量三相包裹体(LH2O+LCO2+GCO2)。化学成分属K+(Na+)—SO-24(Cl-)型,气相成分以H2O、CO2为主,含一定量CH4、CO、H2S等还原性气体。均一温度表明金矿的成矿温度为中温(200℃～260℃),成矿流体盐度低(1.05%～4.96%)。成矿流体主要来源于岩浆水、变质水,并有大气降水的混合。Fluid inclusions in quartz veins occur commonly in the Dazhuangzi gold deposit, with so small size of 6～12μm. Fluid inclusion types are mainly single liquid phase and two-phase gas-liquid, and less three-phase CO_2 inclusions. The chemical component belong to K^+ (Na^+)-SO_2-4 (Cl^-) type. Gas phase in the inclusions are H_2O, CO_2 and some deoxidization gas such as CH_4, CO, and H_2S etc. Homogeneous temperature measurements show that moderate mineralization temperature (200～260°C) and low salinity (1.05%～4.96%). Ore-forming fluids came from magmatic and metamorphic water and mixing with meteoric water.

关 键 词：成矿流体 流体包裹体 大庄子金矿 

分 类 号：P618.51[天文地球—矿床学]