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黄龙铺地区位于北秦岭NE向钼-铅-锌-铜成矿带和NW向铀-铌-铅-稀土-稀有金属成矿带交汇部位，发育铀矿及多金属矿化。对铀成矿构造、矿体特征和矿石特征等进行系统总结，探讨黄龙铺地区铀矿地球化学及蚀变分带特征。研究认为，铀矿化体形成于秦岭造山带碰撞造山后伸展拉张阶段，受NW向和NE向断裂控制，含矿岩性主要为NE向含钾长石石英碳酸岩脉，其次为NW向石英碳酸岩脉，NW向断裂带内的矿体，多呈脉状、似层状产出，NE向断裂控制的矿体，形态相对复杂，常呈透镜状、扁豆状产出。含铀碳酸岩脉富集U、Sr、Ba和REE等不相容元素，碳酸岩稀土元素配分模式具有向右倾斜、轻稀土元素富集的特点。矿化前期发育钾长石化、黑云母化，矿化期发育硅化、黄铁矿化，矿化期后发育绢云母化、绿泥石化、碳酸盐化、高岭土化和褐铁矿化，并形成明显的内带（强蚀变带）-中带（过渡带）-外带（弱蚀变带）水平分带及垂向分带。
Abstract：The Huanglongpu region is located at the convergence of the northeast-trending molybdenum-leadzinc-copper metallogenic belt within the North Qinling orogenic belt and the northwest-trending uraniumniobium-REE-rare metal metallogenic belt. It hosts notable uranium and polymetallic mineralization. This paper systematically summarized the uranium metallogenic structure, orebody characteristics and ore characteristics, and discussed the geochemical characteristics and alteration zoning of uranium deposits in the Huanglongpu area. Uranium deposits primarily formed during the post-collision extensional and tensile phase of the Qinling orogeny, controlled by NW and NE-trending faults. The main host rocks are NEoriented K-feldspar-bearing quartz-carbonate veins,with subordinate NW-oriented counterparts. NW faultrelated mineralization predominantly occurs as vein or stratiform bodies, while NE faults produce more complex, lensoid or disseminated mineralization. The carbonate veins are enriched in incompatible elements such as U, Sr,Ba,and REEs,exhibiting a right-leaning REE distribution with light REE enrichment. In the pre-mineralization stage, K-feldspathization and biotitization were developed; the main mineralization stage was characterized by silicification and pyritization; the post-mineralization stage developed sericitization, chloritization, carbonatization, kaolinization and limonitization. The alteration exhibits distinct horizontal and vertical zonation, consisting of an inner zone(intense alteration zone), middle zone(transition zone) and outer zone(weak alteration zone).
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基本信息:
中图分类号:P619.14
引用信息:
[1]廉康,王天,冯伟.北秦岭成矿带洛南黄龙铺地区铀矿地球化学及蚀变分带特征研究[J].世界核地质科学,2026,43(04):702-712.
基金信息:
铀矿区域评价项目“陕西省北秦岭成矿带洛南地区铀-多金属矿资源调查评价”（编号：202314-1）资助~~
2026-05-12
2026-05-12
2026-05-12