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

夏冬; 罗照华; 王君良; 彭玉旋; 朱志新; 杨屹

doi:10.19751/j.cnki.61-1149/p.2020.01.008

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

夏冬^1,2,
罗照华^1, ,,
王君良²,
彭玉旋³,
朱志新²,
杨屹²

1. 中国地质大学地球科学与资源学院, 北京 100083;
2. 新疆地质调查院, 新疆乌鲁木齐 830000;
3. 新疆矿产实验研究所, 新疆乌鲁木齐 830000

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）

详细信息

作者简介:
夏冬(1981-),男,博士研究生,长期从事地质矿产勘查及研究工作。E-mail:agdl@163.com

通讯作者:
罗照华(1952-),男,教授,博士生导师,矿物岩石矿床学专业,火成岩岩石学、岩浆活动与成矿作用、区域岩石大地构造研究方向。E-mail:luozh@cugb.edu.cn

中图分类号: P618.3
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出版历程
- 收稿日期: 2019-07-14
- 修回日期: 2019-08-07
- 网络出版日期: 2022-07-28
- 发布日期: 2020-03-04

Fluid Inclusion Characteristics and Metallogenic Model of the Aqishan Pb-Zn (Cu) Deposit, Shanshan County, Xinjiang

1. School of Gesciences and Resources, China University of Geosciences, Beijing 100083, China;
2. Xinjiang Institute of Geological Survey, Urumqi 830000, Xinjiang, China;
3. Xinjiang Institute of Mineral Experient, Urumqi 830000, Xinjiang, China

摘要

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。
- 矽卡岩 /
- 流体包裹体 /
- 成因 /
- 成矿模式 /
- 阿奇山铅锌(铜)矿
Abstract: 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.
- Skarn /
- fluid inclusion /
- genesis /
- metallogenic model /
- Aqishan Pb-Zn (Cu) ore

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