| 洪江市大坪金矿床地质特征及其找矿前景 |
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| 引用本文： | 赵建光.洪江市大坪金矿床地质特征及其找矿前景[J].湖南地质,2001,20(3):171-176. |
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| 作者姓名： | 赵建光 |
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| 作者单位： | 湖南省地质调查院怀化矿产地质调查所 湖南怀化418000 |
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| 摘 要： | 大坪金矿床产于黄茅园与中华山花岗岩体之间外接触带，赋矿地层为上元古界及震旦系浅变质绿片岩相碎屑岩系，金源物质丰富，区域构造变形强烈，褶皱断裂发育，矿床总体受NE向大型韧脆性剪切带（F8)控制，矿化明显分为NW向和NE向两组，以NW向矿脉蚀变强，矿物组合复杂，金含量较高，富矿体产于两者交叉处，主要矿体均分布于变形强带内部及附近，矿化与硅化，绢云母化，黄铁矿，毒砂关系密切，目前发现含放脉37条，矿体近30个，找矿前景十分广阔。
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| 关 键 词： | 金矿床 韧脆性剪切带 NW向矿体 NE向矿体 找矿前景 赋矿地层 |
GEOLOGICAL CHARACTERISTICS OF Au-DEPOSIT AND ITS PROSPECTING FOREGROUND AT DAPING GOLD MINE, HONGJIANG |
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| ZHAO,Jian-guang.GEOLOGICAL CHARACTERISTICS OF Au-DEPOSIT AND ITS PROSPECTING FOREGROUND AT DAPING GOLD MINE, HONGJIANG[J].Hunan Geology,2001,20(3):171-176. |
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| Authors: | ZHAO Jian-guang |
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| Abstract: | Au deposit of Daping ocucrs in the external contact zone between Huangmaoyuan granite and Zhonghuashan granites, strata of ore-occurred are clastic rock of greenschist facies of Paleoproterozoic erathem and Sinian system, there are abundant Au sources in the strata. The structural deformation is strong, folds and faults develop very well, the ore bodies are whole controlled by the large-sized ductile-britle shear zone(F8). The mineralization is obviously divided into two orientations of NW and NE, and ore-vein of NW is the strong alteration, mineral association is complex,there is a high Au-bearing content, the ore-riched bodies occur in the cross place between NW and NE mineralization zone. The main ore-bodies distribute along with the interior or nearby of the strong deformation zone, their mineralization has a closely relationship with silicification, sericitization, pyrite and arsenopyrite. At present, 37 Au-bearing vein and approaching 30 ore bodies have been found in the district, there is a vast prospect foreground. |
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| Keywords: | Au deposit Ductile-britle shear zone Ore body of NW orientation Ore body of NE orientation Prospect foreground |
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