世界核地质科学2026，Vol.43Issue(4)：702-712,11.DOI:10.3969/j.issn.1672-0636.2026.04.005
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
Metallogenic characteristics and mineralization of uranium deposits in Huanglongpu area of Luonan,north Qinling metallogenic belt
摘要
Abstract
The Huanglongpu region is located at the convergence of the northeast-trending molybdenum-lead-zinc-copper metallogenic belt within the North Qinling orogenic belt and the northwest-trending uranium-niobium-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 NE-oriented K-feldspar-bearing quartz-carbonate veins,with subordinate NW-oriented counterparts.NW fault-related 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).关键词
北秦岭成矿带/黄龙铺/铀矿地球化学特征/蚀变分带特征Key words
North Qinling metallogenic belt/Huanglongpu/geochemical characteristics of uranium deposits/alteration zoning characteristics分类
天文与地球科学引用本文复制引用
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(4):702-712,11.基金项目
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 Supported by China Nuclear Geology Program(No.202314-1) （编号:202314-1）
