化工矿产地质2024，Vol.46Issue(1)：32-39,8.
西藏多龙矿集区拿若铜金矿床地质特征及成因
Geological Characteristics and Genesis of Naruo Copper-Gold Deposit in Dolong Mineral Assemblage area,Tibet
摘要
Abstract
Naruo copper-gold deposit is located in the northern part of the western section of the Bangong Lake-Salween River suture zone,and is one of the important constituent deposits of Dolong mineral assemblage area,with proven reserves reaching large scale.In this paper,we investigate the geological characteristics,ore body characteristics,ore characteristics and wall rock alteration,etc.Through field research and indoor petrography and mineragraphy analyses,we classify the formation process of Naruo copper-gold deposit into five mineralization stages:magmatic stage,potassium feldspar-sulfide stage,quartz-polymetallic sulfide stage,quartz-pyrite stage and oxidation stage.At the same time,the wall rock alteration characteristics of Naruo copper-gold deposit were analyzed,and it was concluded that Naruo copper-gold deposit can be divided into four alteration zones from the center of the rock body to the surrounding rocks,which are potassic alteration zone,sericitic alteration zone,propylitization zone and keratinization zone,and have the typical central surface alteration characteristics of porphyry-type deposits.The genesis type of Naruo deposit is porphyry type of copper-gold deposit.According to the geological conditions of the ore body,It is proposed that the early Cretaceous granodorite porphyry and middle Jurassic feldspar quartz sandstone of Sewa formation and their contact zone with K-silicate alteration,the quartz-sericite alteration,and the propylitization are important prospecting markers.关键词
西藏/多龙矿集区/拿若铜金矿/地质特征/矿床成因Key words
Tibet/Dolong mineral assemblage area/Naruo copper-gold deposit/Geological characteristics/Deposit genesis分类
天文与地球科学引用本文复制引用
姚飞扬,孙振明,刘应州,朱万朋,李宏斌,王淑婷..西藏多龙矿集区拿若铜金矿床地质特征及成因[J].化工矿产地质,2024,46(1):32-39,8.基金项目
吉林省大学生创新创业训练项目 藏北班-怒成矿带西段拿若铜金矿床成矿年代学及成矿构造背景研究(编号:202211437032) （编号:202211437032）
