地质与勘探2012，Vol.48Issue(2)：199-206,8.
西藏多不杂斑岩铜金矿床地质与蚀变
Geology and Alteration of the Duobuza Porphyry Copper-gold Deposit in Tibet
摘要
Abstract
The Duobuza porphyry copper deposit, located in the west of the Bangonghu-Nujiang metallogenic belt,is a newly discovered deposit. Three stages of granodiorite porphyries intruded into Jurassic Quse Fm. metamorphosed quartz sandstones, and the northeast, trending faults exert a major control on rocks in the Duobuza deposit. Potassic alteration, phyllic alteration and propylitic alteration developed in the Duobuza deposit from inward to outward. Potassic alteration mainly occurred in the first stage of granodiorite porphyry, and was surrounded and overprinted by phyllic alteration. Propylitic alteration occurred in the south and west locally. Gold mineralization was closely associated with copper mineralization, and copper mineralization mainly occurred as chalcopyrite. Chalcopyrite mineralization occurred in the first stage of granodiorite porphyry and its outskirt, indicating that the granodiorite porphyry of the first stage was the main mineralization rock for this deposit.关键词
多不杂/斑岩铜矿/蚀变/班公湖-怒江成矿带Key words
Duobuza/porphyry copper deposit/alteration/Bangonghu-Nujiang metallogenic belt分类
天文与地球科学引用本文复制引用
祝向平,陈华安,马东方,黄瀚霄,李光明,卫鲁杰,刘朝强..西藏多不杂斑岩铜金矿床地质与蚀变[J].地质与勘探,2012,48(2):199-206,8.基金项目
国家973项目“青藏高原南部大陆聚合与成矿作用”（2011CB403100）和中国地质调查局地质矿产调查评价专项（1212011086074）联合资助. （）
