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地质科学  2019, Vol. 54 Issue (4): 1399-1415    DOI: 10.12017/dzkx.2019.079
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与岩浆热液有关成矿流体特征、演化及其对比研究——以社垌石英脉型钨钼矿床和宝山斑岩型铜矿床为例
王新宇1    杨    振2    张起钻1    黎海龙3    刘希军4    付    伟4    王酉臣4
  1. 广西壮族自治区地质矿产勘查开发局  南宁    530023;
  2. 中国地质大学(武汉)资源学院  武汉    430074;
  3. 广西壮族自治区地球物理勘察院  广西柳州    545005;
  4. 桂林理工大学,广西隐伏金属矿产勘查重点实验室  桂林    541006
Characteristics of ore-forming fluids associated with magmatic-hydrothermal mineralization system: A case study from the Shedong quartz-type W-Mo deposit and the Baoshan porphyry Cu deposit
Wang Xinyu1    Yang Zhen2    Zhang Qizuan1    Li Hailong3    Liu Xijun4    Fu Wei4    Wang Youchen4
  1. Guangxi Bureau of Geology & Mineral Prospecting & Exploitation, Nanning  530023;
  2. School of Earth Resources, China University of Geosciences, Wuhan  430074;
  3. Geophysical Exploration Institute of Guangxi, Liuzhou, Guangxi  545005;
  4. Guilin University of Technology, Guangxi Key Laboratory of Hidden Metallic Ore Deposits Exploration, Guilin, Guangxi  541006
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摘要 
与同一花岗质岩浆系统密切相关的不同成矿作用在成矿流体性质、组成、演化及成矿物质沉淀等特征既存在相似之处,也表现出明显差异。本文对赋存在社山复式岩体中的社垌石英脉型钨钼矿床和宝山斑岩型铜矿床进行的对比研究表明,钨钼矿体呈石英细脉状产出在社山加里东期黑云母花岗闪长岩中,铜矿体呈浸染状分布在宝山燕山晚期隐伏花岗斑岩体中。流体包裹体研究数据表明,社垌钨钼矿床石英中流体包裹体均一温度范围为180 ℃~320 ℃和340 ℃~440 ℃,其中主峰值范围为180 ℃~320 ℃,盐度峰值范围分别为0~10%、16%~20%、30%~34%,集中在0~10% NaClequiv.峰值范围内(n = 177),显示社垌钨钼矿床的成矿流体形成于一种中高温、中低盐度的H2O-NaCl±CO2体系。宝山斑岩型铜矿床中石英包裹体的均一温度范围在136.6 ℃~440.0 ℃,峰值为240 ℃~360 ℃,盐度主要集中在0.18%~34.83% NaClequiv.n = 154),显示宝山斑岩型铜矿床的成矿流体属于中-高温、高盐度的NaCl-H2O-KCl±CO2体系。结合包裹体岩相学以及均一温度和盐度的特征,我们认为社垌脉状钨钼矿床成矿流体的演化经历了早期岩浆流体与晚期大气降水逐渐混合的过程,流体混合作用可能是引起矿石沉淀的主要因素,而宝山斑岩型铜矿床的成矿流体演化可能是早期岩浆结晶分异的中-高温、中-高盐度初始成矿流体,晚期又分异为高温、低盐度流体和高温、高盐度流体,流体沸腾和相分离作用对Cu金属元素的运移和沉淀起着重要的作用。
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王新宇 杨振 张起钻 黎海龙 刘希军 付伟 王酉臣
关键词大瑶山   社垌W-Mo矿床   宝山Cu矿床   流体混合   流体沸腾   相分离作用     
Abstract
The magmatic-hydrothermal metallogenic system may show similar evolution characteristics of the ore-forming fluids, which closely accompanied with the early magmatic evolution and with involvement of meteoric water in the late stage. However, the distinct mineralization associated with the same magmatic processes may also show difference in the characteristics, components and evolution of the ore-forming fluid, and precipitation mechanism of the ore-forming materials. In this paper, we studies the Shedong quartz-vein type W-Mo deposit and the Baoshan porphyry Cu deposit, which both hosted in the Sheshan composite pluton. The W-Mo ore bodies occurred in the Caledonian Sheshan biotite granodiorite with quartz veinlets while the Cu ore bodies show disseminated distributed in the Late Yanshanian concealed Baoshan porphyry granite. The fluid inclusion data of the Shedong W-Mo deposit show that the homogenization temperatures range from 180 ℃ to 320 ℃ and from 340 ℃ to 440 ℃. The main peak varies from 180 ℃ to 320 ℃. The peak salinity range from 0 to 10%, from 16% to 20%, and from 30% to 34% respectively, and centralizes in the range of 0 to 10% NaClequiv.n = 177), which indicates that the ore-forming fluid of the Shedong W-Mo deposit belongs to the H2O-NaCl±CO2 system with moderate-high temperature and moderate-low salinity. The homogenization temperatures fluid inclusions data in the Baoshan porphyry Cu deposit range from 136.6 ℃ to 440.0 ℃ and the peak is 240 ℃ to 360 ℃. The salinity centralizes in the range of 0.18% to 34.83% NaClequiv.n = 154), which indicates that the ore-forming fluid of the Baoshan Cu deposit belongs to the NaCl-H2O-KCl±CO2 system with mid-high to high temperature and high salinity. Thus, we can conclude that the evolution of the ore-forming fluid of the Shedong lode W-Mo deposit experienced the process of the gradual mixing of the early magmatic fluid and involvement of meteoric water in the late stage. The fluid mixing may be play an important role in the ore precipitation. The evolution of the ore-forming fluid of the Baoshan porphyry Cu deposit experienced the mid-high temperature initial fluid of early magma crystallization differentiation differs to high temperature, low salinity fluid and high temperature, high salinity fluid. Fluid boiling and phase separation play an important role in the migration and precipitation of metal elements.
Key wordsDayao Mountains   Shedong tungsten-molybdenum deposit   Baoshan copper deposit   Fluid mixing   Fluid boiling   Phase separation   
收稿日期: 2019-03-20; 出版日期: 2019-10-10
基金资助:

广西自然科学基金杰出青年科学基金项目(编号:2018GXNSFFA281009)、广西科技基地和人才专项“广西地矿局院士工作站”(编号:桂科AD17129052)和广西壮族自治区地质矿产开发局科研项目(编号:2012026193)资助

作者简介: 王新宇,男,1981年4月生,博士,高级工程师,矿物学、岩石学、矿床学专业。E-mail:wangxy1981@sina.com
引用本文:   
王新宇 杨振 张起钻 黎海龙 刘希军 付伟 王酉臣. 2019, 与岩浆热液有关成矿流体特征、演化及其对比研究——以社垌石英脉型钨钼矿床和宝山斑岩型铜矿床为例. 地质科学, 54(4): 1399-1415.
Wang Xinyu Yang Zhen Zhang Qizuan Li Hailong Liu Xijun Fu Wei Wang Youchen. Characteristics of ore-forming fluids associated with magmatic-hydrothermal mineralization system: A case study from the Shedong quartz-type W-Mo deposit and the Baoshan porphyry Cu deposit[J]. Chinese Journal of Geology, 2019, 54(4): 1399-1415.
 
没有本文参考文献
[1] 申萍, 沈远超, 李光明, 刘铁兵, 曾庆栋, 李厚民. 胶东金牛山金矿床构造—流体—成矿作用体系研究[J]. 地质科学, 2004, (2): 272-283.
[2] 王可勇, 姚书振, 吕新彪. 川西北马脑壳金矿床构造-流体-金成矿作用系统演化模式[J]. 地质科学, 2001, (2): 164-175.
 
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