| 杜高峰.山东金翅岭金矿成矿流体特征[J].地质与勘探,2012,48(4):677-684 |
| 山东金翅岭金矿成矿流体特征 |
| Characteristics of Ore-forming Fluid from the Jinchiling Gold Deposit in Shandong Province |
| 投稿时间：2011-08-26 修订日期：2011-12-29 |
| DOI： |
| 中文关键词: 包裹体 成矿流体 稀土元素 金翅岭金矿 山东 |
| 英文关键词: inclusion,ore-forming fluid,rare earth element,Jinchiling gold deposit,Shandong Province |
| 基金项目:国家科技攻关项目(编号2004BA615-02)和湖南省自然科学基金(编号07JJ6071)联合资助 |
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| 中文摘要: |
| [摘 要]通过流体包裹体岩相学、显微测温学和包裹体稀土元素等的分析,研究山东金翅岭金矿床成矿流体性质和演化,研究结果表明:流体包裹体主要为气液两相包裹体,另有少量液相包裹体。包裹体气相成分主要以H2O、CO2为主。液相成分属Na+-K+-Ca2+-Mg2+-Cl--SO2-4体系,成矿流体为岩浆热液夹有变质水和大气降水的混合流体。流体包裹体的均一温度介于140～350℃,金的主成矿期为第域和第芋阶段,成矿温度范围为290℃～185℃,流体盐度介于7.3%～8.9%,为中-低温、低盐度的成矿流体。石英、黄铁矿包裹体稀土元素特征研究表明:轻稀土富集,重稀土亏损,具有中等负铕异常,标准化曲线为略右倾曲线。 |
| 英文摘要: |
| Abstract:This work analyzed the fluid inclusions,micro-thermometry and rare earth elements of the Jinchiling gold deposit in Shandong Province. The objective was to study the property and evolution of the ore-forming fluid of this gold deposit. The result shows that these inclusions are dominated by
gas and liquid two-phase ones,with few of liquid phase. The compositions of gas in the inclusions are primarily H2O and CO2. The liquid composition is Na+-K+-Ca2+-Mg2+-Cl--SO2-4,and ore-forming fluid is the mixed fluid of magmatic hydrothermal and meteoric water. The homogenization temperature is 140℃～350℃. The main mineralization of gold occurred in the second and third stages of the evolution when the temperature was 185℃～290℃. And the salinity of fluid inclusions is 7.3% to 8.9%,implying an ore-formation fluid of intermediate-low temperature and low salinity. The REE (rare earth element) analysis shows that the inclusions are characterized by LREE (light rare earth element) enrichment,HREE (heavy rare earth element) deplerion,middle negative Eu anomalies,and slightly right-deviation standardization curves. |
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