| 许远平,甘雨,黄凤,杨钻云,张磊.老挝万象省南坡金矿地质特征及矿床成因浅析[J].矿产勘查,2012,3(6):836-844 |
| 老挝万象省南坡金矿地质特征及矿床成因浅析 |
| Geological characteristics of the Nanpo gold deposit, Vientiane Province, Laos |
| 投稿时间：2012-05-16 |
| DOI： |
| 中文关键词: 南坡金矿 地质特征 矿床成因 找矿标志 老挝 |
| 英文关键词: Nanpo gold deposit geological characteristics deposit genesis prospecting criteria Laos |
| 基金项目: |
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| 中文摘要: |
| 南坡金矿区地处印支陆块群墨江—黎府—罗文真火山弧带的北段,区内地质构造复杂,岩浆活动频繁。火山活动为金矿床的形成提供了丰富的物源,区域构造和派生裂隙是区内含金热液迁移的通道和容纳矿源成矿的场所。文章通过对区内矿床地质、控矿构造、矿石矿物蚀变组合特征等成矿地质条件的分析,将测区矿床成因类型暂定为地下热卤水参与的浅层低温热液黄铁矿脉构造蚀变岩型金矿床和二长花岗岩黄铁矿脉构造裂隙带蚀变岩型金矿床；从物源、成矿热动力、构造和围岩圈闭等4个成矿有利条件对南坡金矿床成因进行阐述,确立了找矿标志。 |
| 英文摘要: |
| The Nanpo gold deposit is located in the northern part of Mojiang -Lifu - Luowenzhen island arc belt which belongs to Indo - Chinese continental plate group with complexity of geological structures and frequent magmatic activities. Volcanic activities provide a rich material sources for the formation of gold deposits, the regional structures and derived fractures provide the fluid moving channel and deposition space for the hydrothermal fluids. In this paper, the authors conducted the integrated analysis on metallogenic geological conditions such as regional mineral deposits, ore-controlling structures, ore mineral alteration assemblages etc. in this area, and concluded that the genesis of mineral deposits is an epithermal structure-controlling pyrite-vein altered type gold mineralization by the hot brines and the monzogranite-hosted fissure-controlling pyrite-vein altered type gold mineralization. Finally, the author discussed the genesis of Nanpo gold deposit in aspects of mineralization source, metallogenetic thermal engine, structures and countyrock trap structure.Based on the study results, the gold prospecting criteria were established in this area. |
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