地质与勘探2025，Vol.61Issue(2)：221-229,9.DOI:10.12134/j.dzykt.2025.02.001
西藏珠勒矿化点的发现与勘查
Discovery and Prospecting of the Zhule Mineralization Spot in Xizang:Evidence from Short-Wave Infrared Alteration Mineral Mapping
摘要
Abstract
The Zhule area in Xizang is a newly discovered mineralization spot in the continental volcanic rock area in the southwest section of the Bangongco-Nujiang belt.There are lithocap and mineralization clues on the surface,which reveals a great potential for prospecting.This article conducted a detailed anatomical study on the lithocap in the Zhule area based on short-wave infrared technology.On the basis of identifying the types of alteration in the region,the alteration mineral assemblages were determined,the spectral characteristics of typical alteration minerals were analyzed,and minerals spectral indicators were established to speculate the location of hydrothermal center.The research indicates that the lithocap is characterized by strong silicification and sericitization,and the altered mineral assemblages mainly include six categories:sericite±illite±montmorillonite,sericite±montmorillonite±jarosite,sericite±illite±carbonate,sericite±chlorite,alunite,pyrophyllite±kaolinite±dickite±diaspore.Based on the analysis of the altered minerals and spectral characteristics theory of typical minerals,the identification of altered minerals that sericite with high SWIR-IC(>2.4),alunite with high Pos1480(>1483 nm),and high Pos1430(>1433 nm)can serve as spectral indicators for inferring hydrothermal center and narrowing the exploration target area.Based on the short-wave infrared study of surface altered minerals in the Zhule area,one potential areas for hydrothermal center have been delineated,which can provide theoretical basis for subsequent deep mineral exploration.关键词
短波红外光谱/蚀变矿物/找矿勘查/珠勒/西藏Key words
short-wave infrared spectrum/altered minerals/prospecting exploration/Zhule/Xizang分类
计算机与自动化引用本文复制引用
白龙洋,代晶晶,刘治博,宋扬,王楠,陈伟..西藏珠勒矿化点的发现与勘查[J].地质与勘探,2025,61(2):221-229,9.基金项目
国家自然科学基金地质联合基金(编号:U2444212)、中国地质科学院基本科研业务费专项经费(编号:JKYZD202405)、国家自然科学基金面上项目(编号:42172332)和中国地质调查项目(编号:DD20230286、DD20230358)联合资助. （编号:U2444212）
