|
|
|
|
|
|
Spectra Characterization of Diaspore-Sapphire From Hotan, Xinjiang |
LIU Jia, ZHENG Ya-long, WANG Cheng-bo, YIN Zuo-wei*, PAN Shao-kui |
Gemmological Institute, China University of Geosciences (Wuhan), Hubei Gems and Jewellry Engineering Technology Research Center,Wuhan 430074, China
|
|
|
Abstract This paper studies a kind of seed material gemstone called “blue Hotan jade” with sparse output and high marketing price. Due to the deficiency of previous research and standardized naming, its business name is confused in the trading market. Hydrostatic weighing method determines The relative density of 3.85 g·cm-3. Only the white mineral part shows orange fluorescence under the long-wave ultraviolet lamp. Through microscopic observation, straight a blue-white color zone, coniform blue-white color zone, irregular blue zone and many white vein minerals can be seen. Through observation by orthogonal polarization and differential interference, it is determined that the vein minerals are different from the substrate and formed after the substrate. It is determined that the infrared absorption peaks of blue substrate and white zone mineral are located at 812/817, 652/655 and 613/620 cm-1, which conforms to the characteristic vibration of corundum; 3 019, 2 950, 2 129, 1 990, 1 121, 1 030, 799, 733, 648, 598 cm-1 absorptions of vein minerals conform to the characteristic vibration of diaspore. The absorption spectra of different parts of the sample were measured by micro UV-VIS-NIR spectrophotometer, in which no obvious absorption was found in the white color zone; 429 and 453 nm absorption caused by Fe3+ d electron transition 6A1→4E, 4A1(4G) and 1 810, 2 030 and 2 235 nm absorption caused by OH vibration were found in the vein minerals; 421/418, 562/566, 702/709 and 868/889 nm absorption caused by Fe3+ d electron transition 6A1→4E, 4A1(4G), Fe2+-Ti4+ ion pair charge transfer and Fe2+-Fe3+ ion pair charge transferwere observed on the blue substrate. As the color deepens, the blue region 421 nm absorption occurs blue shift, 500~900 nm absorption occurs red shit, and the absorption peak integral area increases according to the quantitative analysis of the XRD pattern, sapphire accounts for about 66. 9%, and diaspore about 33.1%. According to the national standard named jewellry and jade (GB/T 16552—2017), it is recommended to be named Diaspore-Sapphire.
|
Received: 2022-07-11
Accepted: 2022-10-10
|
|
Corresponding Authors:
YIN Zuo-wei
E-mail: yinzuowei1025@163.com
|
|
[1] Chukanov N V. Springer Netherlands, 2014. 261. doi: 10.1007/978-94-007-7128-4.
[2] Delattre S, Balan E, Lazzeri, et al. Physics & Chemistry of Minerals, 2012, 39(2): 93.
[3] ZHOU Dan-yi, LU Tai-jin, KE Jie, et al(周丹怡, 陆太进, 柯 捷, 等). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2017, 37(11): 3504.
[4] XU Ya-fen, DI Jing-ru, FANG Fei(徐娅芬, 狄敬如, 方 菲). Journal of Gems & Gemmology(宝石和宝石学杂志), 2019, 21(2): 10.
[5] Andrew Putnis, Robert C. Liebermann. Mineralogical Applications of Crystal Field Theory. 2nd ed. Cambridgeshire: Cambridge University Press, 1993. 127.
|
[1] |
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. |
[2] |
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. |
[3] |
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. |
[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] |
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. |
[6] |
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. |
[7] |
LI Xiao-dian1, TANG Nian1, ZHANG Man-jun1, SUN Dong-wei1, HE Shu-kai2, WANG Xian-zhong2, 3, ZENG Xiao-zhe2*, WANG Xing-hui2, LIU Xi-ya2. Infrared Spectral Characteristics and Mixing Ratio Detection Method of a New Environmentally Friendly Insulating Gas C5-PFK[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(12): 3794-3801. |
[8] |
HU Cai-ping1, HE Cheng-yu2, KONG Li-wei3, ZHU You-you3*, WU Bin4, ZHOU Hao-xiang3, SUN Jun2. Identification of Tea Based on Near-Infrared Spectra and Fuzzy Linear Discriminant QR Analysis[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(12): 3802-3805. |
[9] |
LIU Xin-peng1, SUN Xiang-hong2, QIN Yu-hua1*, ZHANG Min1, GONG Hui-li3. Research on t-SNE Similarity Measurement Method Based on Wasserstein Divergence[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(12): 3806-3812. |
[10] |
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. |
[11] |
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. |
[12] |
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. |
[13] |
DANG Rui, GAO Zi-ang, ZHANG Tong, WANG Jia-xing. Lighting Damage Model of Silk Cultural Relics in Museum Collections Based on Infrared Spectrum[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(12): 3930-3936. |
[14] |
LUO Li, WANG Jing-yi, XU Zhao-jun, NA Bin*. Geographic Origin Discrimination of Wood Using NIR Spectroscopy
Combined With Machine Learning Techniques[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(11): 3372-3379. |
[15] |
DUAN Ming-xuan1, LI Shi-chun1, 2*, LIU Jia-hui1, WANG Yi1, XIN Wen-hui1, 2, HUA Deng-xin1, 2*, GAO Fei1, 2. Detection of Benzene Concentration by Mid-Infrared Differential
Absorption Lidar[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(11): 3351-3359. |
|
|
|
|