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热红外高光谱技术在地质找矿中的应用综述
投稿时间:2020-03-24  修订日期:2020-05-12  点此下载全文
引用本文:代晶晶,赵龙贤,姜琪,王海宇,刘婷玥.2020.热红外高光谱技术在地质找矿中的应用综述[J].地质学报,94(8):2520-2533.
DAI Jingjing,ZHAO Longxian,JIANG Qi,WANG Haiyu,LIU Tingyue.2020.Review of thermal- infrared spectroscopy applied in geological ore exploration[J].Acta Geologica Sinica,94(8):2520-2533.
DOI:10.19762/j.cnki.dizhixuebao.2020172
摘要点击次数: 119
全文下载次数: 93
作者单位E-mail
代晶晶 1) 中国地质科学院矿产资源研究所 自然资源部成矿作用与资源评价重点实验室北京100037 daijingjing863@sina.com 
赵龙贤 1) 中国地质科学院矿产资源研究所 自然资源部成矿作用与资源评价重点实验室北京100037  
姜琪 2) 中国地质大学(北京)地球科学与资源学院, 北京100083  
王海宇 2) 中国地质大学(北京)地球科学与资源学院, 北京100083  
刘婷玥 2) 中国地质大学(北京)地球科学与资源学院, 北京100083  
基金项目:本文为国家重点研发计划深地资源勘探开采课题(2018YFC0604101)、中国地质调查项目(DD20190167)及中央级公益性科研院所基本科研业务费专项资金(KK1919)联合资助成果。
中文摘要:热红外高光谱技术(6~14μm)是一种新兴的绿色地质找矿技术,它通过分析矿物热红外光谱特征,开展矿物信息提取及填图应用研究,进而指导找矿勘查。比起发展相对成熟的短波红外(1.1~2.5μm)高光谱技术,它对于短波红外波段无法识别的石英、长石、石榴子石、橄榄石、辉石、碳酸盐矿物、黑云母、角闪石、磷灰石等矿物具有更加敏感的探测能力。目前,热红外在地质找矿中的研究尚处于初级阶段,很多科学问题尚待解决。矿物化学成分的变化是引起热红外波谱特征变化的最重要因素,这也是开展矿物识别与提取的理论基础,本文首次系统分析了不同波谱库及文献中的热红外波谱,总结了上述典型矿物的热红外波谱特征,揭示了矿物的诊断性波段与识别标志。而后将热红外高光谱技术分为地面热红外光谱数据分析技术与空中热红外图像处理技术两大方向,其中地面热红外技术主要基于岩芯或地表样品的波谱特征,开展矿物精细填图研究,建立矿床的找矿勘查模型;空中热红外技术基于图像处理与分析,提取区域矿物分布信息,为找矿指明方向。最后本文指出了未来热红外高光谱技术在地质找矿中的技术难点及热点,即高精度热红外高光谱仪器的研发、矿物热红外光谱的快速识别技术、热红外图像信息提取算法的优化。
中文关键词:热红外  高光谱  矿物  波谱  矿床勘查
 
Review of thermal- infrared spectroscopy applied in geological ore exploration
Author NameAffiliationE-mail
DAI Jingjing 1) Key Laboratory of Metallogeny and Mineral Assessment, Ministry of Natural Resources
Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing, 100037 
daijingjing863@sina.com 
ZHAO Longxian 1) Key Laboratory of Metallogeny and Mineral Assessment, Ministry of Natural Resources
Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing, 100037 
 
JIANG Qi 2) School of Earth Sciences and Resources, China University of Geosciences, Beijing, 100083  
WANG Haiyu 2) School of Earth Sciences and Resources, China University of Geosciences, Beijing, 100083  
LIU Tingyue 2) School of Earth Sciences and Resources, China University of Geosciences, Beijing, 100083  
Abstract:Thermal- infrared spectroscopy (6~4 μm) is a new environmental- friendly technology for ore exploration. It aids mineral mapping and ore exploration through the analysis of spectral characteristics of minerals. Compared with the short- wave infrared (SWIR) technology at wavelength of 11~25 μm, it was more sensitive for minerals such as quartz, feldspar, garnet, olivine, pyroxene, carbonate minerals, biotite, amphibole, apatite etc. However, little research on the thermal- infrared spectroscopy of minerals and its application in ore exploration has been conducted. Components of minerals was the main factor for spectral variation, which was the foundation for mineral identification and mapping. In this paper, spectra of typical minerals at thermal- infrared wavelength were obtained from different spectral libraries and literature, and the diagnostic and identifiable characteristics of these minerals were summarized. Then thermal- infrared technology were divided into two categories (field thermal- infrared spectroscopy and air- borne thermal- infrared image), and recent developments in their application in geological ore exploration were analyzed. Field thermal- infrared spectroscopy was based on spectra analysis of huge field outcrop samples or drill hole samples, which guided mineral mapping and ore exploration. Air- borne thermal- infrared technology was mainly based on the processing of thermal- infrared images, which generated the mineral mapping results. Finally, the challenges and exciting areas in the development of thermal- infrared technology were predicted, which include development of thermal- infrared instruments with higher precision, identification technology ofminerals from thermal- infrared spectra, optimization of mineral information extraction algorithms based on thermal- infrared images.
keywords:thermal- infrared spectroscopy  hyperspectral  mineral  spectra  ore exploration
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