|
|
|
|
|
|
| Spectral Characteristics of Light Yellow Feldspar From Guyang, Inner Mongolia |
| LI Xuan1, CHEN Quan-li1, 2*, ZHENG Xiao-hua2 |
1. Gemmological Institute，China University of Geosciences （Wuhan），Wuhan 430074，China
2. Gemmological Institute，West Yunnan University of Applied Sciences, Tengchong 679118, China
|
|
|
|
|
Abstract Inner Mongolia can mine up to 100 tons of yellow to colorless feldspar yearly, with good transparency and concentrated distribution. It can be treated to meet the market demand. Guyang feldspar can be used as a gem resource with great development prospects. In this paper, the basic gemological characteristics, chemical composition and vibration spectral characteristics of feldspar in Guyang County, Inner Mongolia are systematically studied by using a series of testing technologies such as laser Raman spectroscopy, X-ray fluorescence spectroscopy, Fourier transforms infrared spectroscopy, electron probe and conventional gemological testing methods. The results show that the crystal form of feldspar raw stone samples in this area is mostly gravel, the refractive index is 1.555~1.570, the birefringence is 0.008~0.010, and the density is 2.65~2.68 g·cm-3. The UV fluorescence characteristics of the samples show that they are inert under long waves (365 nm) and short waves (254 nm). X-ray fluorescence spectrometer analysis shows that all samples contain a certain amount of Al, Si and Ca, and a small amount of Ti, Fe, Mn, Mg and Sr. According to the chemical molecular formula calculation and the proportion of end groups of feldspar according to the test results of electron microprobe, this kind of sample belongs to medium feldspar. The infrared absorption peak of feldspar is mainly between 1 200~400 cm-1. From albite to anorthite, it increases with the grade of feldspar. In the infrared absorption spectrum, the absorption peaks of 590 and 650 cm-1 are shifted to the low wavenumber range, to 575 cm-1± and 624 cm-1± respectively. The absorption peaks of Guyang middle feldspar studied in this paper are located at 578 and 632 cm-1 respectively, which is in line with the characteristics of the infrared spectrum changes of feldspar sequence and belongs to the infrared absorption spectrum characteristics of typical middle feldspar. The Raman peaks of this kind of feldspar are composed of seven main Raman peaks: 102, 186, 290, 489, 516, 572 and 800 cm-1. The 102, 186 and 290 cm-1 peaks below 450 cm-1 are caused by the vibration between metal cations and oxygen ([M—O]). The splitting degree of the Raman peaks at 290 cm-1 and 490 cm-1 can indicate the order of Al/Si in silicate minerals. The Raman peaks at 489, 516 and 572 cm-1 belong to the bending vibration spectrum of O—Si(AL)—O and the antisymmetric stretching of Si OBR Si (AL). The comparative analysis with feldspar from other producing areas can be used as one of the identification basis. Based on the above analysis, this feldspar’s composition and main structure are analyzed and discussed.
|
|
Received: 2022-03-08
Accepted: 2022-05-11
|
|
|
|
Corresponding Authors:
CHEN Quan-li
E-mail: chenquanli_0302@163.com
|
|
[1] George R Rossman. Gems & Gemlogy, 2011，47(1): 16.
[2] DONG Xin-zhi, QI Li-jian, ZHONG Zeng-qiu(董心之, 亓利剑, 钟增球). Journal of Gems and Gemmology(宝石和宝石学杂志), 2009, 11(1): 20.
[3] LI Hai-fu(李海负). Jewelry(珠宝)，1992，（1）：45.
[4] PAN Qi-yu(潘启宇). Atlas of Rare Stone Minerals in Inner Mongolia(内蒙古奇石矿物图谱). Huhhot: Inner Mongolia People’s Publishing House(呼和浩特：内蒙古人民出版社)，1992. 70.
[5] XIE Jun, YU Xue-hui, ZHANG Jian, et al(谢 俊, 喻学惠, 张 健，等). Bulletin of Mineralogy, Petrology and Geochemistry(矿物岩石地球化学通报), 2007, 26(s1): 227.
[6] XU Pei-cang, LI Ru-bi，et al(徐培苍，李如璧，等). Raman Spectroscopy in Geosciences(地学中的拉曼光谱). Xi’an: Shaanxi Science and Techology Press(西安: 陕西科学技术出版社)，1996. 59.
[7] PEI Jing-cheng, XIE Hao, SUN Chun-lin(裴景成, 谢 浩, 孙春林). Journal of Gems and Gemmology(宝石和宝石学杂志), 2009, 11(3): 11.
[8] ZHANG Yong-wang, ZENG Jian-hui, LIU Yan, et al(张永旺，曾溅辉，刘 琰，等). Spectroscopy and Spectral Analysis (光谱学与光谱分析)，2009，29（9）：2480.
[9] ZENG Guang-ce(曾广策). Concise Photomineralogy(简明光性矿物学). Wuhan: China University of Geosciences Press(武汉：中国地质大学出版社)，1998. 31.
[10] ZHANG Bei-li(张蓓莉). Systematic Gemmology(系统宝石学). Beijing：Geology Press(北京：地质出版社)，2006. 288.
|
| [1] |
LI Jie, ZHOU Qu*, JIA Lu-fen, CUI Xiao-sen. Comparative Study on Detection Methods of Furfural in Transformer Oil Based on IR and Raman Spectroscopy[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2024, 44(01): 125-133. |
| [2] |
CHENG Jia-wei1, 2，LIU Xin-xing1, 2*，ZHANG Juan1, 2. Application of Infrared Spectroscopy in Exploration of Mineral Deposits: A Review[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2024, 44(01): 15-21. |
| [3] |
WANG Fang-yuan1, 2, HAN Sen1, 2, YE Song1, 2, YIN Shan1, 2, LI Shu1, 2, WANG Xin-qiang1, 2*. A DFT Method to Study the Structure and Raman Spectra of Lignin
Monomer and Dimer[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2024, 44(01): 76-81. |
| [4] |
GAO Feng1, 2, XING Ya-ge3, 4, LUO Hua-ping1, 2, ZHANG Yuan-hua3, 4, GUO Ling3, 4*. Nondestructive Identification of Apricot Varieties Based on Visible/Near Infrared Spectroscopy and Chemometrics Methods[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2024, 44(01): 44-51. |
| [5] |
XING Hai-bo1, ZHENG Bo-wen1, LI Xin-yue1, HUANG Bo-tao2, XIANG Xiao2, HU Xiao-jun1*. Colorimetric and SERS Dual-Channel Sensing Detection of Pyrene in
Water[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2024, 44(01): 95-102. |
| [6] |
WANG Xin-qiang1, 3, CHU Pei-zhu1, 3, XIONG Wei2, 4, YE Song1, 3, GAN Yong-ying1, 3, ZHANG Wen-tao1, 3, LI Shu1, 3, WANG Fang-yuan1, 3*. Study on Monomer Simulation of Cellulose Raman Spectrum[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2024, 44(01): 164-168. |
| [7] |
LIU Jia, ZHENG Ya-long, WANG Cheng-bo, YIN Zuo-wei*, PAN Shao-kui. Spectra Characterization of Diaspore-Sapphire From Hotan, Xinjiang[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2024, 44(01): 176-180. |
| [8] |
BAO Hao1, 2，ZHANG Yan1, 2*. Research on Spectral Feature Band Selection Model Based on Improved Harris Hawk Optimization Algorithm[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2024, 44(01): 148-157. |
| [9] |
GUO Ya-fei1, CAO Qiang1, YE Lei-lei1, ZHANG Cheng-yuan1, KOU Ren-bo1, WANG Jun-mei1, GUO Mei1, 2*. Double Index Sequence Analysis of FTIR and Anti-Inflammatory Spectrum Effect Relationship of Rheum Tanguticum[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2024, 44(01): 188-196. |
| [10] |
WANG Lan-hua1, 2, CHEN Yi-lin1*, FU Xue-hai1, JIAN Kuo3, YANG Tian-yu1, 2, ZHANG Bo1, 4, HONG Yong1, WANG Wen-feng1. Comparative Study on Maceral Composition and Raman Spectroscopy of Jet From Fushun City, Liaoning Province and Jimsar County, Xinjiang Province[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2024, 44(01): 292-300. |
| [11] |
YANG Cheng-en1, 2, LI Meng3, LU Qiu-yu2, WANG Jin-ling4, LI Yu-ting2*, SU Ling1*. Fast Prediction of Flavone and Polysaccharide Contents in
Aronia Melanocarpa by FTIR and ELM[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2024, 44(01): 62-68. |
| [12] |
LI Qi-chen1, 2, LI Min-zan1, 2*, YANG Wei2, 3, SUN Hong2, 3, ZHANG Yao1, 3. Quantitative Analysis of Water-Soluble Phosphorous Based on Raman
Spectroscopy[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(12): 3871-3876. |
| [13] |
SUN Wei-ji1, LIU Lang1, 2*, HOU Dong-zhuang3, QIU Hua-fu1, 2, TU Bing-bing4, XIN Jie1. Experimental Study on Physicochemical Properties and Hydration Activity of Modified Magnesium Slag[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(12): 3877-3884. |
| [14] |
BAI Xue-bing1, 2, SONG Chang-ze1, ZHANG Qian-wei1, DAI Bin-xiu1, JIN Guo-jie1, 2, LIU Wen-zheng1, TAO Yong-sheng1, 2*. Rapid and Nndestructive Dagnosis Mthod for Posphate Dficiency in “Cabernet Sauvignon” Gape Laves by Vis/NIR Sectroscopy[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(12): 3719-3725. |
| [15] |
WANG Qi-biao1, HE Yu-kai1, LUO Yu-shi1, WANG Shu-jun1, XIE Bo2, DENG Chao2*, LIU Yong3, TUO Xian-guo3. Study on Analysis Method of Distiller's Grains Acidity Based on
Convolutional Neural Network and Near Infrared Spectroscopy[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(12): 3726-3731. |
|
|
|
|
