投稿时间：2022-10-22
修订日期：2023-03-15
网络发布日期：2023-07-08
中文摘要:蚀变矿物短波红外(SWIR)光谱特征日趋广泛地应用于矿产勘查研究中。绢云母作为热液矿床中最为发育的蚀变矿物之一，通过SWIR光谱技术提取其谱学特征，进而建立与矿床基础地质信息之间的相关性具有重要意义。然而，前人对于绢云母短波红外光谱特征的研究主要集中于单个矿床，缺少不同矿床间的对比。基于此，文章梳理了混合矿物光谱曲线中对单一矿物相对含量的提取方式，系统总结了温度、流体化学成分、流体pH值、寄主岩石、矿物结构、矿物粒度及共(伴)生矿物等因素对绢云母谱学特征空间变化规律的影响，最后，从契尔马克替换效应角度出发，分析对比了5种不同成因类型矿床中近矿端绢云母波长变化。虽然将绢云母短波红外光谱特征有效地应用于矿产勘查仍存在诸多问题，但作者相信，应用绢云母短波红外光谱特征进行矿产勘查依然具有良好的前景。
Abstract:The SWIR spectral characteristics of alteration minerals are increasingly widely used in mineral exploration. Sericite is one of the most abundant alteration minerals in hydrothermal deposits. Extracting its spectral features through SWIR spectroscopy technology and establishing a correlation with the basic geological information of the deposit is of great significance. However, previous studies on the short wave infrared spectral characteristics of sericite mainly focused on a single deposit, lacking comparative studies among different deposits. Based on this, This article summarizes the extraction methods for the relative content of a single mineral in the spectral curve of mixed minerals, the influence of temperature, fluid chemical composition, fluid pH value, host rock, mineral structure, mineral grain size and associated minerals on the spatial variation of sericite spectral characteristics is systematically summarized. Finally, this paper analyzes and compares the wavelength changes of sericite near the ore body in five different genetic types of deposits. Although the effective application of sericite short wave infrared spectral characteristics to mineral exploration still has many problems to be further explored. Nevertheless, this paper believes that the application of sericite short wave infrared spectral characteristics to mineral exploration still has good prospects.
keywords:geology sericite short wave infrared spectral average wavelength of Al-OH mineral exploration
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基金项目:本文得到国家自然科学基金(编号： 41972077)和四川省科技厅应用基础研究项目（编号： 2021YJ0376）共同资助
引用文本：
毛星星,彭惠娟,张云龙,周琪,王天瑞,覃恩.2023.绢云母短波红外光谱特征及其在矿产勘查中的应用[J].矿床地质,42(3):646~659MAO XingXing,PENG HuiJuan,ZHANG YunLong,ZHOU Qi,WANG TianRui,QIN En.2023.Short wave infrared spectrum characteristics of sericite and its application to mineral exploration[J].Mineral Deposits42(3):646~659
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