山东省埃子王家—原疃矿区成矿流体特征及流体来源  

Characteristics of the Ore-forming Fluid from the Aiziwangjia-Yuantuan Gold Deposit in Shandong Province and Its Origin

作　　者：杨柳[1,2] 邹海洋[1,2] 陈松岭[1,2] 杜高峰[1,2] 刘艳萍[1] 

机构地区：[1]中南大学地球科学与信息物理学院,湖南长沙410083 [2]中南大学"有色金属成矿预测"教育部重点实验室,湖南长沙410083

出　　处：《地质与勘探》2012年第2期217-226,共10页Geology and Exploration

基　　金：湖南省自然科学基金(编号07JJ6071)资助

摘　　要：通过对埃子王家-原疃矿区流体包裹体岩相学、测温学及铅、硫同位素等的分析,研究其成矿流体性质和演化,并探讨矿床成矿流体和成矿物质来源,结果表明:①流体包裹体主要为气液两相包裹体;包裹体液相成分阳离子以K+、Na+、Ca2+、Mg2+为主,阴离子以SO42-、Cl-、F-为主;气相成分以H2O、CO2、CH4为主;②成矿流体均一温度、盐度分别为120～350℃,4.26%～8.66%,为中低温(200℃以下为70%)、低盐度的流体;③206Pb/204Pb范围为16.217～18.034;207Pb/204Pb范围为15.180～16.889;208Pb/204Pb范围为36.586～39.987。分析认为,本区铅同位素来源应为壳幔混合源。This paper presents analysis of the lithofacies, thermometry and sulfur isotopes of fluid inclusions from the Aiziwangjia-Yuantuan gold de- posit in Shandong Province. The purpose is to study the property, evolution and origin of the ore-forming fluid of this gold deposit. The result shows that these fluid inclusions are mainly gas and fluid two-phase ones. Compositions of liquid inclusions are Na＋ , K＋ , Ca2＋ , Mg2＋ , SOl-, C1- and F-, and those of gas liquid are mainly H2 O, CO2 and CH4. The homogenization temperature of ore-forming fluid ranges from 120℃ to 350℃, and salinity of fluid inclusions is between 4.26% and 8.66%, belonging to the middle-low temperature（ ≤200℃ accounting for 70% ）and low salinity fluid. In Pb isotope values, 206pb/204pb ranges from 16. 217 to 18. 034 207 pb/2O4pb ranges from 15. 180 to 16. 889, 208pb/204pb ranges from 36. 586 to 39. 987, respectively, and δ34S （%0） ranges from -4.7 to ＋4.7. The analysis suggests that these isotopes have a mixed material source from crust and mantle.

关 键 词：成矿流体 包裹体 金矿床 埃子王家-原疃 

分 类 号：P597[天文地球—地球化学] P618.51[天文地球—地质学]