| 内生金矿床的成矿流体 |
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| 引用本文： | 邵军,张哲.内生金矿床的成矿流体[J].地质与资源,2001,10(1):50-55. |
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| 作者姓名： | 邵军 张哲 |
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| 作者单位： | 沈阳地质矿产研究所, 辽宁 沈阳 110033 |
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| 摘 要： | 流体具有媒介和作用剂的双重属性,流体作用贯穿于整个内生金矿成矿作用过程.不同地区、不同类型金矿床具有相似的原始成矿流体——来源于上地幔或下地壳的、富含SiO2、挥发份、成矿元素的C-H-O体系.在从深部至浅部的运移过程中受岩石建造性质、岩石(层)中流体成分的混入以及水-岩反应等因素作用,原始的成矿流体物理化学性质、组成成分等发生了不同程度的改变,最终形成直接导致金矿化的成矿流体.造成成矿流体中金等成矿物质发生沉淀的主要原因是流体的沸腾作用、流体中挥发份的逸失、流体相的分离作用、不同类型流体之间的混合作用以及热液蚀变(水-岩反应)作用等.
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| 关 键 词： | 内生金矿床 成矿流体 流体性质 流体来源 流体的成矿作用 |
| 文章编号： | 1671-1947(2001)01-0050-06 |
| 收稿时间： | 2000-12-12 |
| 修稿时间： | 2000年12月12 |
MINERALIZING FLUIDS OF ENDOGENETIC GOLD DEPOSITS |
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| SHAO Jun,ZHANG Zhe.MINERALIZING FLUIDS OF ENDOGENETIC GOLD DEPOSITS[J].Geology and Resources,2001,10(1):50-55. |
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| Authors: | SHAO Jun ZHANG Zhe |
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| Institution: | Shenyang Institute of Geology and Mineral Resources, Shenyang 110033, China |
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| Abstract: | Fluid performs as both medium and agent. The fluid action runs through the whole mineralizing progress of endogenetic gold deposits.Different types of gold deposits from different regions share a similar original ore forming fluid, i.e.,the C H O system derived from upper mantle or lower crust, rich in SiO 2, volatile components and metallogenetic elements. During the migration from deep to shallow position, the original ore forming fluid is changed in physicochemical characters and composition by the factors of rock formation, mixture of fluids from strata and water/rock reaction, forming a metallogenetic fluid that leads to gold mineralization. The main reasons for the precipitation of ore material(such as Au)in metallogenetic fluid are boiling of fluid, escaping of volatile component from fluid, separation of fluid phases, mixture of different types of fluids and hydrothermal alteration(water/rock reaction). |
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| Keywords: | endogenetic gold deposit ore forming fluid character of fluid origin of fluid mineralization of fluid |
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