| 杨武生,丁汝褔,周守余.桂北龙胜岩湾金矿稀土元素四分组效应及其地质意义[J].地质找矿论丛,2019,34(4):524-528 |
| 桂北龙胜岩湾金矿稀土元素四分组效应及其地质意义 |
| Tetrad effect of REE of Yanwan gold deposit in Longsheng district of northern Guangxi and its geological significance |
| 投稿时间：2019-07-02 |
| DOI：10.6053/j.issn.1001-1412.2019.04.004 |
| 中文关键词: 岩湾金矿 稀土元素 四分组效应 地质特征 桂北龙胜地区 |
| 英文关键词:Yanwan gold deposit REE tetrad effects geologic characteristics Longsheng area of noth Guangxi |
| 基金项目:广西壮族自治区自然资源厅2019年找矿战略突破项目"桂北金矿成矿规律与找矿前景研究"（编号：桂自然资函[2019]2403号）资助。 |
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| 中文摘要: |
| 桂北龙胜地区金矿广泛分布，岩湾金矿便是其中一例。岩湾金矿为产于前寒武系浅变质碎屑岩系中的脉状金矿，受NNE向断裂控制、围岩蚀变强度不高、矿物组合比较简单。通过对岩湾金矿床黄铁矿稀土元素地球化学特征研究发现，岩湾金矿的稀土元素具有非常典型的"W"型稀土四分组效应；稀土元素的四分组效应与其氢氧同位素特征反映的成矿流体来源既有大气降水又不能排除岩浆流体的参与相吻合，说明岩湾金矿属于具有两种（期）热液参与成矿的浅成中低温热液脉状矿床。 |
| 英文摘要: |
| Gold deposit is widely distributed in Longsheng area of northern Guangxi. Yanwan gold deposit is one of them. It is a vein type Au deposit occurring in the Precambrian shallow metamorphic clastic rock series and controlled by NNE fault. Wall rock alteration is weak with simple mineral assemblage. REE of the deposit is characterized by typical "W" type tetrad effect. The tetrad effect and hydrogen and oxygen isotope characteristics reflect both meteorite water and magmatic hydrothermal fluid incorporation in the ore-forming process. It is a meso-epithermal Au seposit. |
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