投稿时间：2024-04-18
修订日期：2024-09-20
网络发布日期：2025-10-31
中文摘要:为了确定拉曼光谱能否快速准确地提供辉石的成分信息，文章利用激光拉曼光谱仪和电子探针仪分析了付家山矽卡岩型钨矿中辉石的拉曼光谱谱峰位置与矿物成分之间的相关性。笔者发现辉石拉曼光谱谱峰位置与成分之间存在非常强的相关性，310~330 cm-1波段内的谱峰偏移直接受Mg2+和Fe2+等价替代作用的制约，谱峰稳定且易识别。笔者将该波段内的拉曼谱峰位置作为自变量，相应的辉石成分作为因变量构建估算辉石主量成分或端员比例的线性回归方程，并利用收集到的辉石拉曼光谱数据进行验证。结果显示，线性回归方程方法与电子探针数据计算的值相比，误差基本在10%以内。因此，拉曼光谱可以作为一种快速有效估算矽卡岩中辉石成分的方法，并且在矽卡岩矿床勘查过程中能够加速构建矽卡岩的蚀变分带模型，为找矿方向提供技术支撑。
Abstract:Quantitative correlation between the Raman band position and composition of pyroxene from the Fujiashan skarn tungsten deposit were investigated by Raman spectroscopy and electron probe microanalysis to determine whether Raman spectroscopy can quickly and accurately provide composition information for pyroxene. Results suggest a significant correlation between the Raman band position and pyroxene composition. The shift of Raman band between 310 cm-1 and 330 cm-1 is directly affected by the homovalent substitution between Mg2+and Fe2+ and is stable and easily identified. A linear regression equation is thus constructed to estimate the major components and the proportion of the end-members of pyroxene. The differences between the linear regression equation method and values calculated from the electron probe microanalysis are within 10% when using the pyroxene data collected for the validation test. This study confirms that the Raman spectroscopy can be used as a fast and reliable method to estimate the pyroxene composition in skarn, which can fascinate the construction of skarn mine-ral spatial zonation during the exploration and prospecting.
keywords:Raman spectroscopy skarn tungsten deposit pyroxene major components linear correlation Fujiashan
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基金项目:本文得到国家自然科学基金项目(编号：41925011、92162217)和新一轮找矿突破战略行动科技支撑项目(编号：ZKKJ202425)联合资助
引用文本：
卢丽帆,朱乔乔,谢桂青,吴昌雄,魏克涛,蔡恒安,尚世超.2025.湖北付家山矽卡岩型钨矿床中辉石拉曼光谱特征及其勘查指示意义[J].矿床地质,44(5):1127~1142LU LiFan,ZHU QiaoQiao,XIE GuiQing,WU ChangXiong,WEI KeTao,CAI HengAn,SHANG ShiChao.2025.Raman spectroscopy characteristics and exploration implication of pyroxene from Fujiashan skarn tungsten deposit of Hubei Province[J].Mineral Deposits44(5):1127~1142
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