邯郸洪山金矿化区石英脉流体包裹体特征  

Characteristics of fluid inclusions in quartz veins from the gold mineralization zone in Hongshan complex,Handan

作　　者：张景森[1,2] 翟艳超[1] 高明尚 张静[1,3] 

机构地区：[1]河北工程大学资源学院,河北邯郸056038 [2]河北工程大学河北省资源勘测研究实验室,河北邯郸056038 [3]河北工程大学图书馆,河北邯郸056038

出　　处：《河北工程大学学报（自然科学版）》2015年第4期98-103,112,共7页Journal of Hebei University of Engineering:Natural Science Edition

基　　金：河北省自然科学基金资助项目(D2013402026)

摘　　要：为探讨邯郸洪山杂岩金矿化区成矿热液流体特征及其来源，测试区内石英脉流体包裹体均一温度和盐度，分析石英脉微量元素和铷、锶同位素，估算包裹体捕获温度和压力、pH值和Eh值。结果表明，流体包裹体主要为液体和富液体包裹体，均一温度206℃-305℃，平均值为254℃，流体盐度变化于7．17～10．19wt％NaCl，平均值为8．36wt％NaCl，热液属于低温、低盐度流体；包裹体捕获的平均温度为303℃，平均压力为721×10^5Pa，约相当于2．40km的深度；流体富含多种微量元素，随温度、压力等条件变化而变化，具有比围岩和周围侵入岩高的铷、锶同位素比值；热液流体具有明显大气降水来源特征。For discussing the characteristics and sources of the hydrothermal fluid in the gold mineralization zone in Hongshan complexes near Handan city, homogenization temperatures and salinities of the fluid inclusions in quartz vein from this area are tested, trace elements and Rb - Sr isotopes of the quartz vein are analyzed ; the temperature and pressure, pH and Eh values of the fluid inclusions being taken are estimated. The results show that, fluid inclusions are mostly liquid and liquid - rich types with the homogenization temperatures varying from 206℃ to 305℃ and a mean of 254℃, and with the salinites varying from 7.17 wt% NaC1 to 10.19 wt% NaC1 and a mean of 8.36 wt% NaCl, they belong to the low - temperature and low - salinity hydrothermal fluid. Those inclusions are taken at a mean temperature of 303~C and a mean pressure of 721×10^5Pa or a depth about 2.40km. The fluid enriches multiple trace elements and their contents are influenced by the temperature and pressure and so on, the Rb - Sr isotope ratios are higher than the main intrusive rocks, wall rock or ones around the complex area. These characteristics reveal that the hydrothermal fluid is obviously characterized by the meteoric water.

关 键 词：流体包裹体 石英脉 金矿化 洪山杂岩 

分 类 号：P614[天文地球—矿床学]