| 徐巧,王磊,张云国,杜祥扩,王海岗.老挝沙耶武里省纳东金矿地质、地化异常特征及找矿预测[J].矿产勘查,2026,17(5):852-863 |
| 老挝沙耶武里省纳东金矿地质、地化异常特征及找矿预测 |
| Geological and geochemical anomaly characteristics and ore-prospecting prediction of Nadong gold deposit in Xayaburi Province, Laos |
| 投稿时间：2025-09-15 |
| DOI：10.20008/j.kckc.202605009 |
| 中文关键词: 纳东金矿 地化异常特征 找矿预测 老挝巴莱 |
| 英文关键词: Nadong gold deposit geochemical anomaly characteristics prospecting prediction Paklay, Laos |
| 基金项目:本文受青年科学基金项目(41602098)资助。 |
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| 中文摘要: |
| 老挝沙耶武里省纳东金矿位于琅勃拉邦—黎府金矿带中部，成矿地质条件优越。本文在 1∶5万地球化学测量基础上，结合地质填图、土壤地球化学测量及山地工程验证，系统分析了矿区的成矿地质特征、地球化学异常分布规律及找矿潜力。研究表明，纳东金矿受北北东向深大断裂及其伴生韧性剪切带控制，矿体主要赋存于中二叠统潘达组和中三叠统帕红组地层中，与闪长岩岩株时空关系密切。地球化学异常呈现典型的 Au-As-Sb-Hg前缘晕与 Au-Ag-Cu矿化中心晕组合，异常严格受断裂和岩体接触带控制。在 Sompoy矿区共圈定 19条金矿体，两条主矿体延长超过 1 km，平均品位 2.86 g/t，深部具良好延深潜力。综合研究认为，纳东金矿具有大型金矿找矿前景，对老挝中北部类似地质背景区域的矿产勘查具有指导意义。 |
| 英文摘要: |
| The Nadong gold deposit in Xayaburi Province, Laos, is situated in the central part of the LuangPrabang-Loei gold metallogenic belt, characterized by excellent metallogenic geological conditions. Based on 1∶ 50000 geochemical survey data, combined with geological mapping, soil geochemical surveying, and trenching veri-fication, this paper systematically analyzes the metallogenic geological characteristics, geochemical anomaly distri-bution patterns, and prospecting potential of the mining area. Research indicates that the Nadong gold deposit iscontrolled by a NNE-trending deep fault and its associated ductile shear zone. The ore bodies mainly occur in theMiddle Permian Pang Da Formation and the Middle Triassic Pa Hong Formation, exhibiting a close spatial and tem-poral relationship with diorite stocks. Geochemical anomalies display a typical combination of Au-As-Sb-Hg proxi-mal halos and Au-Ag-Cu mineralization center halos, with anomalies strictly controlled by fault zones and intrusivecontacts. A total of 19 gold ore bodies have been delineated in the Sompoy mining area, with two main ore bodies ex-tending over 1 km in length and an average grade of 2.86 g/t, showing significant potential for deep extension. Com-prehensive studies suggest that the Nadong gold deposit has the prospect of becoming a large-scale gold deposit,providing important guidance for mineral exploration in geologically similar areas of central and northern Laos. |
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