合仁坪金矿H-O-S-Pb同位素地球化学特征及其成因机制

doi:10.12068/j.issn.1005-3026.2019.02.020

东北大学学报:自然科学版 ›› 2019, Vol. 40 ›› Issue (2): 256-261.DOI: 10.12068/j.issn.1005-3026.2019.02.020

合仁坪金矿H-O-S-Pb同位素地球化学特征及其成因机制

贾三石¹，冷文芳²，王恩德³，谷鸿飞³

(1. 东北大学秦皇岛分校资源与材料学院，河北秦皇岛066004; 2. 辽宁省矿产勘查院，辽宁沈阳110032; 3. 东北大学资源与土木工程学院，辽宁沈阳110819)

收稿日期:2017-11-15 修回日期:2017-11-15 出版日期:2019-02-15 发布日期:2019-02-12
通讯作者: 贾三石
作者简介:贾三石(1982-)，男，河南漯河人，东北大学讲师，博士；王恩德(1957-)，男，辽宁盖县人，东北大学教授，博士生导师.
基金资助:
国家自然科学基金资助项目(41372098).

H-O-S-Pb Isotopic Geochemical Characteristics and Formation Mechanism of the Herenping Gold Deposit

JIA San-shi¹， LENG Wen-fang²， WANG En-de³， GU Hong-fei³

1. School of Resource & Materials， Northeastern University at Qinhuangdao， Qinhuangdao 066004， China; 2. Liaoning Institute of Mineral Exploration， Shenyang 110032， China; 3. School of Resources & Civil Engineering， Northeastern University， Shenyang 110819， China.

Received:2017-11-15 Revised:2017-11-15 Online:2019-02-15 Published:2019-02-12
Contact: JIA San-shi
About author:-
Supported by:
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摘要/Abstract

摘要： 对合仁坪金矿的H-O-S-Pb同位素地球化学分析研究显示，其硫化物的δ³⁴S值介于-4.8‰~2.0‰之间，硫化物的²⁰⁶Pb/²⁰⁴Pb比值为17.419~17.436， ²⁰⁷Pb/²⁰⁴Pb比值为15.519~15.535， ²⁰⁸Pb/²⁰⁴Pb比值为 37.86~37.90.成矿流体的δD介于-62.3‰~-53.0‰之间，δ¹⁸O 介于4.2‰~11.8‰之间.合仁坪金矿的S， Pb， O和H同位素研究结果表明，成矿物质具有深源特征，成矿流体为岩浆热液水来源，成矿作用存在明显的氧化还原特征，并形成本区特色的褪色蚀变带.该金矿是一个与深部岩浆作用有关的金矿床，找矿应着眼于赋矿地层内的氧化还原界面，褪色蚀变带是其主要的找矿标志.

关键词: 钠长石-石英脉, S-Pb同位素, H-O同位素, 金矿床, 成因机制

Abstract: The geochemical analysis of H-O-S-Pb isotopes in the Herenping Gold Mine was carried out. The δ³⁴S values of sulfides from ore lie in-4.8‰~2.0‰. The ratios of ²⁰⁶Pb/²⁰⁴Pb，²⁰⁷Pb/²⁰⁴Pb and ²⁰⁸Pb/²⁰⁴Pb from sulfide ores are 17.419~17.436， 15.519~15.535 and 37.86~37.90， respectively. The δD values of the fluid fall in-62.3‰~-53.0‰，and the δ¹⁸O values of the fluid are 4.2‰~11.8‰. These sulfur， lead， hydrogen and oxygen composition indicate that the ore-forming materials originate from the depth and the ore-forming fluid from magmatic hydrothermal， and mineralization has the characteristics of redox which formed the faded alteration zone in the region. Considering that the Herenping gold deposit is related to the deep magmatism， the ore prospecting should focus on the redox interface in the host strata and the faded alteration is the main indicator for the deposit.

Key words: albite-quartz vein, S-Pb isotope, H-O isotope, gold deposit, formation mechanism

中图分类号:

P611.1

贾三石，冷文芳，王恩德，谷鸿飞. 合仁坪金矿H-O-S-Pb同位素地球化学特征及其成因机制[J]. 东北大学学报:自然科学版, 2019, 40(2): 256-261.

JIA San-shi， LENG Wen-fang， WANG En-de， GU Hong-fei. H-O-S-Pb Isotopic Geochemical Characteristics and Formation Mechanism of the Herenping Gold Deposit[J]. Journal of Northeastern University Natural Science, 2019, 40(2): 256-261.

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合仁坪金矿H-O-S-Pb同位素地球化学特征及其成因机制

H-O-S-Pb Isotopic Geochemical Characteristics and Formation Mechanism of the Herenping Gold Deposit

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