| 罗强,徐培,胡鹏,辛鑫.粤北浰源铀矿床成矿特征及找矿标志研究[J].矿产勘查,2026,17(S1):75-83 |
| 粤北浰源铀矿床成矿特征及找矿标志研究 |
| Metallogenic characteristics and prospecting criteria of the Liyuan uranium deposit in Northern Guangdong |
| 投稿时间：2026-04-30 修订日期：2026-05-12 |
| DOI：10.20008/j.kckc.2026S1009 |
| 中文关键词: 花岗岩型铀矿 成矿特征 控矿因素 找矿标志 浰源铀矿床 |
| 英文关键词: granitic-type uranium deposit metallogenic characteristics ore-controlling factors prospecting indicators Liyuan uranium deposit |
| 基金项目:本文受中国核工业地质局项目（202239、202439-4、202539-1）资助。 |
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| 中文摘要: |
| 桃山—诸广铀成矿带是中国最重要的花岗岩型铀矿成矿带之一。位于该成矿带南段的浰源铀矿床，是一个已探明的小型花岗岩型铀矿床，矿化主要赋存于浰源岩体中的粗粒黑云母花岗岩内，受北东向断裂带控制。区域地层以震旦系、寒武系等富铀浅变质岩为主，北东向的大坑断裂组是主要的控矿与含矿构造。矿床矿化类型以硅化带型为主，其次为碎裂蚀变岩型；矿体呈透镜状，严格受北东向断裂的膨胀、复合及变宽部位控制。矿石矿物以沥青铀矿为主，铀石次之；脉石矿物包括微晶石英、紫黑色萤石和赤铁矿；金属矿物主要为黄铁矿，并发育铜铀云母等次生铀矿物。控矿因素可归纳为富铀花岗岩、北东向断裂带以及钾长石化-硅化-赤铁矿化蚀变组合。北东向断裂带、脉体发育、热液蚀变特征及放射性物探场晕可作为区内深部及边部勘查的重要找矿标志，为桃山—诸广成矿带同类型矿床的找矿矿床提供参考。 |
| 英文摘要: |
| The Taoshan-Zhuguang uranium metallogenic belt is one of the most important granitic-type uranium metallogenic belts in China. The Liyuan uranium deposit， located in the southern segment of this metallogenic belt， is a proven small-sized granitic-type uranium deposit. Mineralization is mainly hosted in coarse-grained biotite granite of the Liyuan rock mass and controlled by the northeast-trending fault zone. Regional strata are dominated by uranium-rich low-grade metamorphic rocks such as the Sinian and Cambrian systems. The northeast-trending Dakeng fault group constitutes the major ore-controlling and ore-hosting structure.The main mineralization type of the deposit is silicified zone type， followed by cataclastic altered rock type. Ore bodies are lenticular in shape and strictly controlled by the dilatation， compounding and widening segments of northeast-trending faults. Ore minerals are dominated by pitchblende with coffinite as the secondary component. Gangue minerals include microcrystalline quartz， purplish-black fluorite and hematite； metallic minerals are mainly pyrite， with secondary uranium minerals such as torbernite well developed.Ore-controlling factors can be summarized as uranium-rich granite， northeast-trending fault zones， and the potash feldspathization–silicification–hematitization alteration assemblage. Northeast-trending fault zones， vein development characteristics， hydrothermal alteration features and radiogeophysical halos can serve as important prospecting indicators for deep and peripheral exploration in the study area， and provide a reference for prospecting of similar deposits in the Taoshan–Zhuguang metallogenic belt. |
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