项目名称： 绿泥石矿物近红外光谱吸收谱带的位移机理与控制机制研究

项目编号： No.41502312

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 天文学、地球科学

项目作者： 杨敏

作者单位： 中国地质调查局西安地质调查中心

项目金额： 20万元

中文摘要： 近红外光谱分析是高光谱遥感的理论基础。因此，研究矿物的近红外光谱对高光谱技术的应用有着重要的实际意义。本课题计划在东昆仑纳赤台地区采集不同成因和岩性的含绿泥石岩石样品，运用近红外光谱吸收谱带的产生原理和结晶矿物学方面的理论，结合红外拉曼测试、X-射线衍射、微区电子探针三种实验测试方法进行的绿泥石矿物近红外谱带归属分析、晶体结构参数测定、元素类质同象关系分析。通过实验数据进行理论推导揭示绿泥石矿物的近红外谱带位移的产生机理，并采用回归分析归纳阳离子含量变化和晶胞参数变化对谱带位移的控制机制。为今后进一步研究蚀变矿物的近红外光谱特征与矿物内部结构、成分的关系提供新思路，为高光谱遥感方法精细区分矿物亚类提供理论依据。

中文关键词： 近红外光谱；绿泥石；谱带位移

英文摘要： Near infared spectroscopy has become an important basic theory of hyperspectral remote sensing technology. Therefore, near-infared analysis has an important practical significance in application of hyperspectral technology. This research planned to collect different causes and lithological units rock samples containing chlorite in the Nachitai region of eastern Kunlun moutain, applying principles of near infrared spectral absorption bands and crystalline mineralogy theories, combined with Raman spectroscopy, X-ray diffraction, electron probe microanalysis to measured the bands attribution, the crystal structure parameters, elements isomorphous relational data. Through theoretical analysis with experimental data to explain the mechanism of the near-infrared bands shift of chlorite minerals, and use regression analysis method to summarize the bands shift control law that caused by isomorphous cation phenomenon. This research could provide new ideas for the further study of relationships between the near-infrared spectral features and mineral internal structure of alteration minerals, and it would theoretically promote the method to distinguish minerals in using hypersectrl data.

英文关键词： near-infared spectra;chlorite;band shift