夏冬,罗照华,王君良,彭玉旋,朱志新,杨屹.新疆鄯善县阿奇山铅锌(铜)矿床流体包裹体特征及成矿模式[J].西北地质,2020,53(1):76-90 XIA Dong,LUO Zhaohua,WANG Junliang,PENG Yuxuan,ZHU Zhixin,YANG Yi.Fluid Inclusion Characteristics and Metallogenic Model of the Aqishan Pb-Zn (Cu) Deposit, Shanshan County, Xinjiang[J].Northwestern Geology,2020,53(1):76-90
新疆鄯善县阿奇山铅锌(铜)矿床流体包裹体特征及成矿模式
Fluid Inclusion Characteristics and Metallogenic Model of the Aqishan Pb-Zn (Cu) Deposit, Shanshan County, Xinjiang
投稿时间:2019-07-15  修订日期:2019-08-08
DOI:10.19751/j.cnki.61-1149/p.2020.01.008
中文关键词:  矽卡岩;流体包裹体;成因;成矿模式;阿奇山铅锌(铜)矿
英文关键词:Skarn;fluid inclusion;genesis;metallogenic model;Aqishan Pb-Zn (Cu) ore
基金项目:中国地质调查局天山-北山成矿带地质矿产调查"新疆东天山阿奇山一带铜多金属矿调查评价"项目(12120114041401)
作者单位E-mail
夏冬 中国地质大学地球科学与资源学院, 北京 100083
新疆地质调查院, 新疆 乌鲁木齐 830000 
 
罗照华 中国地质大学地球科学与资源学院, 北京 100083 luozh@cugb.edu.cn 
王君良 新疆地质调查院, 新疆 乌鲁木齐 830000  
彭玉旋 新疆矿产实验研究所, 新疆 乌鲁木齐 830000  
朱志新 新疆地质调查院, 新疆 乌鲁木齐 830000  
杨屹 新疆地质调查院, 新疆 乌鲁木齐 830000  
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中文摘要:
      阿奇山铅锌(铜)矿床是东天山觉罗塔格成矿带西段新发现的大型铅锌(铜)矿床,具有超大型矿床潜力。在分析矿床地质特征的基础上,对主成矿阶段的矿石矿物(闪锌矿、石英、方解石、石榴子石)进行流体包裹体测温和盐度测试。结果表明:包裹体以气液型两相为主,含子晶的三相包裹体少量,气液两相包裹体气液比为5%~10%,均一温度与盐度分别为94.8~440.1℃和4.8%~44.32%;其中闪锌矿明显分为高温闪锌矿(331℃)和低温闪锌矿(145~181℃),盐度主要分布在8%~14%和18%~22%。通过对流体包裹体的研究,结合矿床地质地球化学研究成果,显示阿奇山铅锌(铜)矿床主要存在早期硅酸岩热液和晚期碳酸盐热液2个成矿阶段,二者叠加部位为主成矿阶段,成矿流体具有低温、中盐度的特征,进而总结了矿床成矿模式。
英文摘要:
      The Aqishan Pb-Zn (Cu) deposit is a newly discovered large-scale Pb-Zn(Cu) deposit in the western section of the Jurassicta metallogenic belt in eastern Tianshan Mountains,with the potential of super-large deposits. Based on the analysis of the geological characteristics of the deposit,the ore minerals (sphalerite,quartz,calcite,garnet) in the main ore-forming stage were tested by fluid inclusion temperature and salinity. The results show that the inclusions are mainly two-phase of gas-liquid; three-phase inclusions containing seed crystals are few. The gas-liquid ratio in gas-liquid two-phase inclusions is 5%~10%,and the uniform temperature is 94.8~440.1°,the salinity is 4.8%~44.32% respectively. Sphalerite is obviously divided into high-temperature sphalerite (331℃) and low-temperature sphalerite (145~181℃). Salinity is mainly distributed in 8~14% and 18~22%.The study of fluid inclusions,combined with the geological and geochemical research of the deposits,shows that The Aqishan Pb-Zn (Cu) deposit mainly exists in the early stage of silicate hydrothermal fluid and in the late stage of carbonate hydrothermal fluid. The interacted part of the two is the main ore-forming stage, with the characteristics of low-temperature and medium salinity in the ore stage,and thus summarizing the ore-forming model of the deposit.
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