印度尼西亚苏门答腊岛马塔比（Martabe）浅成低温热液型金-银矿床的地质特征与找矿标志

doi:10.16108/j.issn1006-7493.2020001

高校地质学报 ›› 2021, Vol. 27 ›› Issue (2): 163-171.DOI: 10.16108/j.issn1006-7493.2020001

• 岩石·矿床·地球化学 • 上一篇下一篇

印度尼西亚苏门答腊岛马塔比（Martabe）浅成低温热液型金-银矿床的地质特征与找矿标志

张海坤¹，胡鹏¹，姜军胜^1*，程湘¹，战明国²，潘罗忠³，戴昱⁴，潘贝红²

1. 中国地质调查局武汉地质调查中心，武汉 430205；
2. 广西壮族自治区地质矿产勘查开发局，南宁 530023；
3. 中国东盟地学合作中心(南宁)，南宁 530023；
4. 广西壮族自治区区域地质调查研究院，桂林 450304

出版日期:2021-04-20 发布日期:2021-04-20

Geological Features and Prospecting Indicators of Martabe Epithermal Au-Ag Deposit, Sumatra, Indonesia

ZHANG Haikun¹，HU Peng1，JIANG Junsheng^1*，CHENG Xiang¹，ZHAN Mingguo²，PAN Luozhong³，DAI Yu⁴，PAN Beihong²#br#

1. Wuhan Center, China Geological Survey, Wuhan 430205, China;
2. GuangXi Bureau of Geology and Mineral Prospecting and Exploitation, Nanning 530023, China;
3. China-Asean Geoscience Cooperation Center (Nanning), Nanning 530023, China;
4. Regional Geological Survey Institute of Guangxi Zhuang Autonomous Region, Guilin 450304, China

Online:2021-04-20 Published:2021-04-20

摘要/Abstract

摘要： 马塔比矿床位于印度尼西亚北苏门答腊省，是印度尼西亚近年确认的一处世界级高硫浅成低温热液型金-银矿床。文章在梳理前人研究的基础上，对其成矿地质特征与找矿标志进行了总结，以丰富该类型矿床实例，指导找矿实践。该矿床金银矿化呈现典型的高硫型浅成低温热液系统蚀变分带特征，由内而外依次发育硅化带、高级泥化带、泥化带、青磐岩化带。赋矿英安岩的锆石U-Pb 定年结果为（3.8±0.5）Ma，热液变质成因明矾石的Ar-Ar 坪年龄分别为（3.3±0.11）Ma 和（2.14±0.10）Ma，表明成岩与成矿间隔时间较短，且可能存在两期高级泥化蚀变作用。成矿作用既有岩浆热液又有大气水的参与，后期地表风化作用使金和银进一步富集。马塔比矿床具有高硫型浅成低温热液矿床的典型特征，总结其找矿标志包括构造环境标志、岩性标志、蚀变标志和化探标志。

关键词: 印度尼西亚, 马塔比, 浅成低温热液, 金-银矿

Abstract: The Martabe deposit, located in the North Sumatra, Indonesia, is a world-class high-sulfidation epithermal Au-Ag deposit discovered in recent years. Based on a comprehensive review of previous knowledge of this deposit, this paper present a summary of its metallogenic geological features, aiming to enrich the cases of epithermal deposits and guide exploration of this type of deposits. The Martabe deposit has similar alteration zonation with typical high-sulfidation epithermal deposit, with zones such as silica, advanced argillic, argillic, and prophylitic zones from the core to the margin. Zircon U-Pb dating on ore-bearing dacite yielded an age of (3.8±0.5)Ma, while two ages of (3.3±0.1) Ma and (2.1±0.1)Ma were obtained from Ar-Ar age determination on

hydrothermal alunite, indicating a brief interval between diagenesis and mineralization and two stages of advanced argillic alteration. Mineralization was associated with the interaction between magma-sourced fluid and meteoric water and further intensified by weathering and erosion following ore-forming. Martabe deposit shares characteristics with the classical high-sulfidation epithermal deposits, displaying prospecting signals in the aspects of tectonic setting, lithology, alteration, and geochemical explorations.

Key words: Indonesia, Martabe, epithermal, Au-Ag deposit

中图分类号:

P641.4+2

张海坤, 胡鹏, 姜军胜, 程湘, 战明国, 潘罗忠, 戴昱, 潘贝红. 印度尼西亚苏门答腊岛马塔比（Martabe）浅成低温热液型金-银矿床的地质特征与找矿标志[J]. 高校地质学报, 2021, 27(2): 163-171.

ZHANG Haikun, HU Peng, JIANG Junsheng, CHENG Xiang, ZHAN Mingguo, PAN Luozhong, DAI Yu, PAN Beihong. Geological Features and Prospecting Indicators of Martabe Epithermal Au-Ag Deposit, Sumatra, Indonesia[J]. Geological Journal of China Universities, 2021, 27(2): 163-171.

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[3]	毛景文 , 李晓峰, 张作衡, 王义天, 李厚民, 胡华斌. 中国东部中生代浅成热液金矿的类型、特征及其地球动力学背景[J]. J4, 2003, 9(4): 620-637.

印度尼西亚苏门答腊岛马塔比（Martabe）浅成低温热液型金-银矿床的地质特征与找矿标志

Geological Features and Prospecting Indicators of Martabe Epithermal Au-Ag Deposit, Sumatra, Indonesia

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