地球学报2017，Vol.38Issue(5)：767-778,12.DOI:10.3975/cagsb.2017.05.16
高硫-低硫化浅成低温热液矿床的短波红外矿物分布特征及找矿模型——以西藏铁格隆南(荣那矿段)、斯弄多矿床为例
Alteration Zoning and Prospecting Model of Epithermal Deposit Revealed by Shortwave Infrared Technique: A Case Study of Tiegelongnan and Sinongduo Deposits
摘要
Abstract
With the Tiegelongnan (Rongna ore block) high sulfidation epithermal deposit and the Sinongduo low sulfidation epithermal deposit as the research objects and on the basis of the shortwave infrared technology, the authors determined alteration and mineral assemblages of the two deposits, and built a shortwave infrared prospecting model. It is found that the alteration minerals in the Tiegelongnan deposit (Rongna) exhibits vertical zoning of kaolinite→kaolinite+(dickite+alunite)→kaolinite+alunite+(dickite)→kaolinite+alunite+dickite. Owing to the metasomatism of hydrothermal on beresitization zone of porphyry, there is a small amount of remanent sericite on the top. Minerals in the Sinongduo deposit show the vertical zoning of muscovite+ (paragonite)→muscovite+paragonite+(illite)→muscovite+paragonite+illite→muscovite+paragonite+montmorillonite+illite. The muscovite at the top was produced by the alteration of the late biotite granite porphyry. It had nothing to do with mineralization. The orebody is mainly hosted in the illite+montmorillonite belt, and the orebody is gradually pinched out as the montmorillonite with illitization.关键词
浅成低温热液型矿床/短波红外技术/蚀变分带/找矿模型/蚀变矿物Key words
epithermal deposit/shortwave infrared technique/alteration zoning/prospecting model/alteration minerals分类
天文与地球科学引用本文复制引用
郭娜,黄一入,郑龙,唐楠,伏媛,王成..高硫-低硫化浅成低温热液矿床的短波红外矿物分布特征及找矿模型——以西藏铁格隆南(荣那矿段)、斯弄多矿床为例[J].地球学报,2017,38(5):767-778,12.基金项目
本文由国土资源部公益性行业科研专项(编号: 201511017-4)和国家自然科学青年基金(编号: 41302265)联合资助. This study was supported by the Special Scien-tific Research Fund of Public Welfare Profession of Ministry of Land and Resources of the People's Re-public of China (No. 201511017-4), and National Natural Science Foundation of China (No. 41302265). （编号: 201511017-4）
