云南楚雄新发现粘土矿中主要矿物组成分析

发布时间：2018-03-17 18:10

本文选题：粘土矿　切入点：红外光谱　出处：《光谱学与光谱分析》2017年04期 　论文类型：期刊论文

【摘要】：为了分析云南楚雄新发现粘土矿中主要矿物组成,确定其主要矿物是否是凹凸棒石粘土,对其五种样品进行了红外光谱与X射线荧光光谱的测试与研究。结果发现,3 437cm~(-1)处的吸收带是凹凸棒石粘土中的结晶水的羟基振动引起的,3 621和3 651cm~(-1)处的吸收带是与凹凸棒石粘土孔道边缘的Mg,Al八面体相连的结构水的羟基的对称和不对称伸缩振动产生的;3 699cm~(-1)处的吸收峰是与结构内部的四面体结构和八面体之间的Mg,Al相连羟基的伸缩振动;1 633cm~(-1)处的吸收峰是结构水与吸收水羟基弯曲振动的吸收峰;1 010cm~(-1)处的吸收带是共价键Si—O—Al的Si—O键的特征峰,913cm~(-1)处的吸收带是二八面体的羟基(Al_2OH)的变形振动的特征吸收峰。表明:粘土矿的五种样品均含有较高凹凸棒石粘土成分;三种黑色样品的中红外光谱与谱库中凹凸棒石粘土谱图比对的相似度在93%以上,三种黑色样品含凹凸棒石粘土成分很高,五种粘土矿样品的主要矿物均是分子式为Al_5Si_8O_(20)(OH_2)_4·4H_2O的凹凸棒石粘土粘土矿样品的凹凸棒粘土的。
[Abstract]:In order to analyze the main mineral composition of the newly discovered clay ore in Chuxiong, Yunnan Province, and to determine whether the main mineral is attapulgite clay, The infrared spectra and X-ray fluorescence spectra of five samples were measured and studied. The results show that the absorption band at 3437 cm ~ (-1) is caused by hydroxyl vibration of crystalline water in attapulgite clay, and the absorption band at 3 621 and 3 651 cm ~ (-1) ~ (-1) is obtained. The absorption peak at the site of the symmetric and asymmetrical stretching vibration of the hydroxyl group of the structure water connected with the MgPU Al octahedron on the edge of the palygorskite clay channel is the hydroxyl group connected to the tetrahedron structure and the octahedron structure of the structure. The absorption peak at 1 633 cm-1) is the absorption band at which the structural water and the absorbent hydroxyl group vibrate at 1010 cm ~ (-1). The absorption band is the characteristic of the Si-O bond of the covalent bond Si-O-Al. The absorption band at the peak of 913 cm-1) is the deformed vibration of the dioctahedron hydroxyl Al2OH. The characteristic absorption peaks show that the five samples of clay ore all contain higher clay composition of attapulgite; The similarity between the mid-infrared spectra of three black samples and that of attapulgite clay in spectral library is more than 93%. The three black samples contain very high composition of attapulgite clay. The main minerals of the five kinds of clay ores are attapulgite clay clay samples with the molecular formula of Al_5Si_8O_(20)(OH_2)_4 路4H _ 2O and attapulgite clay clay clay samples of attapulgite clay clay clay samples of attapulgite clay clay clay.
【作者单位】：楚雄师范学院光谱应用技术研究所;禄丰县广通中学;
【基金】：国家自然科学基金项目(10864001,11364001)资助
【分类号】：P619.231

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