山东招远灵山沟金矿床成矿流体特征研究  

Study on the characteristics of metallogenic fluid in Lingshangou gold deposit in Zhaoyuan city,Shandong province

作　　者：于晓飞[1] 孙丰月[1] 王力[1] 崔威 郑和 

机构地区：[1]吉林大学地球科学学院 [2]黑龙江齐齐哈尔矿产勘查开发总院 [3]内蒙古第九地质矿产勘查开发院

出　　处：《黄金》2007年第6期13-17,共5页Gold

基　　金：<山东省玲珑金矿灵山沟矿区金矿成矿远景及矿体定位预测>项目的部分成果

摘　　要：采用先进的Linkam冷热台和Renishaw激光拉曼光谱仪对灵山沟金矿成矿流体包裹体进行了测试分析,进而讨论了成矿的物理化学条件,并用新的方法估算了灵山沟金矿的成矿深度。分析表明,灵山沟金矿流体包裹体为气液二相盐水溶液（Ⅰ）和含CO2三相包裹体（Ⅱ）两大类,且以前者为主,成分为以H2O（XB=98%）为主的CO2-H2O流体,含有少量的CH4,H2S,N2,CO,CO2和阴离子Cl^-,HCO3^-,SO42^-,其中Cl^-〉HCO3^-〉SO4^2-;均一温度为155.7℃-248.6℃;盐度为3.39%-8.81%（NaCl）;密度在0.84-0.96g/cm^3之间;估算的成矿压力为41.8-65.7MPa,应用断裂带流体深度和压力之间的非线性关系式,计算出灵山沟金矿成矿深度为5.13-6.64km,说明灵山沟金矿属于造山型金矿中的中成金矿床。The fluid inclusions in Lingshangou gold deposit were analyzed with advanced Linkam cooling-heating stage and Renishaw Raman spectrometer. The metallogenic condition was discussed and the metallogenic depth was recalculated with a new method. It was considered that the fluid inclusions consisted of two types, i.e. biphase gasliquid fluid inclusions （ Ⅰ ） and triphase CO2 - bearing fluid inclusions （ Ⅱ ）. The former were characterized by CO2- H2O fluid, which consist of dominant H20（XB =98% ） and a little CH4, H2S, N2, CO, CO2, Cl^-, HCO3 -, Cl^- 〉 HCO3 ^- 〉 SO4^2-. The homogeneous temperature was tested to 155.7℃ - 248.6℃, salinity was 3.39 - 8.81% （ NaCl）, and density was 0.84 - 0.96g/cm^3. Finally, the ore-forming metallogenic pressure was evaluated to 41.8 - 65.7MPa, and the metallogenic depth was calculated to 5.13 - 6.64km according to the nonlinear relationship between depth and pressure of fluid in fault belts. Therefore the Lingshangou gold deposit belongs to a mesozonal orogenic gold deposit.

关 键 词：流体包裹体 成矿深度 静水/静岩压力 造山型金矿 灵山沟金矿 山东招远 

分 类 号：P618.51[天文地球—矿床学]