| 黑龙江省砂宝斯金矿床成矿流体性质研究 |
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| 引用本文： | 贾伟光,王晓勇,张春辉,胡军海,王恩德.黑龙江省砂宝斯金矿床成矿流体性质研究[J].地质与资源,2004,13(3):148-151. |
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| 作者姓名： | 贾伟光 王晓勇 张春辉 胡军海 王恩德 |
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| 作者单位： | 1. 东北大学资源与土木工程学院, 辽宁沈阳 110004;2. 沈阳地质矿产研究所, 辽宁沈阳 110033;3. 中国人民武装警察部队黄金第三支队, 黑龙江哈尔滨 150049 |
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| 摘 要： | 砂宝斯金矿床产于中侏罗统陆相碎屑岩中,金矿体严格受S-N向和NNW向断裂构造控制.矿体石英中流体包裹体较为发育,以气液包裹体为主.通过流体包裹体的研究认为:成矿流体属于Ca2+(K+、Na+)-SO42-(F-、Cl-)型,具有低盐度(0.8%~9.2%)、低密度(0.895g/cm3)、偏碱性(pH8.05~8.26)、高硫低氧(LogfO2值为-39.4~-39.2)和相对还原环境(Eh值为-0.71~-0.68)的特点:成矿温度为200~230℃、成矿压力为17.24MPa,成矿深度为0.575km;成矿流体主要来源于深部岩浆,有部分大气降水加入,是岩浆热液和大气降水的混合流体;Au主要是以Au-S配合物的形式迁移,成矿流体的压力、pH值降低和Eh值升高是导致Au沉淀的重要因素.
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| 关 键 词： | 金矿床 成矿物理化学条件 流体包裹体 黑龙江 |
| 文章编号： | 1671-1947(2004)03-0148-04 |
| 收稿时间： | 2003-12-29 |
| 修稿时间： | 2003年12月29 |
STUDY ON THE CHARACTERISTICS OF ORE FORMING FLUID IN SHABAOSI GOLD DEPOSIT, HEILONGJIANG PROVINCE |
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| JIA Wei guang,WANG Xiao yong,ZHANG Chun hui,HU Jun hai,WANG En de.STUDY ON THE CHARACTERISTICS OF ORE FORMING FLUID IN SHABAOSI GOLD DEPOSIT, HEILONGJIANG PROVINCE[J].Geology and Resources,2004,13(3):148-151. |
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| Authors: | JIA Wei guang WANG Xiao yong ZHANG Chun hui HU Jun hai WANG En de |
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| Institution: | 1. Institute of Resources and Civil Engineering, Northeast University, Shenyang 110004, China;2. Shenyang Institute of Geology and Mineral Resources, Shenyang 110033, China;3. No.3 Gold Geological Party of CAPF, Harbin 150049, China |
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| Abstract: | The Shabaosi gold deposit occures in Middle Jurassic continental clastic rocks.The ore bodies are strictly controlled by S N and NNW trending fault.Fluid inclusions in quartz are well developed,mainly in gas liquid phase.From the study of fluid inclusions,it is concluded that the ore forming fluid belongs to Ca2+(K+,Na+)-SO42-(F-,Cl-) type,which is characterized by the low salinity(0.8%to 9.2%),low density(0.895 g/cm3),alkali (pH 8.05-8.26),high sulfide,low oxidize (LogfO2-39.4 to -39.2)and reducing environment (Eh-0.71 to -0.68).The metallogenic temperature rangs from 200 to 230 ℃,with pressure of 17.24 MPa and depth of 0.575 km.The ore forming fluids are mainly derived from the deep magmas,with a little atmospheric water.Gold is transferred mainly in the form of gold sulphur complex companion.The drop in pressure and pH value and promotion in Eh of the ore forming liquid are important factors resulting in precipitation of gold. |
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| Keywords: | gold deposit physical chemical conditions of mineralization fluid inclusion Heilongjiang Province |
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