Study on the Vibrational Spectra and XRD Characters of Huanglong Jade from Longling County, Yunnan Province
PEI Jing-cheng1, FAN Lu-wei2, XIE Hao3*
1. Gemological Institute, China University of Geosciences, Wuhan 430074, China 2. Yifu Museum, China University of Geosciences, Wuhan 430074, China 3. Wuhan University of Engineering Science, Wuhan 430200, China
Abstract：Based on the conventional test methods, the infrared absorption spectrum, Raman spectrum and X-ray diffraction (XRD) were employed to study the characters of the vibration spectrum and mineral composition of Huanglong jade. The testing results show that Huanglong jade shows typical vibrational spectrum characteristics of quartziferous jade. The main infrared absorption bands at 1 162, 1 076, 800, 779, 691, 530 and 466 cm-1 were induced by the asymmetric stretching vibration, symmetrical stretching vibration and bending vibration of Si-O-Si separately. Especially the absorption band near 800 cm-1 is split, which indicates that Huanglong jade has good crystallinity. In Raman spectrum, the main strong vibration bands at 463 and 355 cm-1 were attributed to bending vibration of Si—O—Si. XRD test confirmed that Quartz is main mineral composition of Huanglong jade and there is a small amount of hematite in red color samples which induced the red color of Huanglong jade. This is the first report on the infrared, Raman and XRD spectra feature of Huanglong jade. It will provide a scientific basis for the identification, naming and other research for huanglong jade.
裴景成1，范陆薇2，谢 浩3*. 云南龙陵黄龙玉的振动光谱及XRD光谱表征[J]. 光谱学与光谱分析, 2014, 34(12): 3411-3414.
PEI Jing-cheng1, FAN Lu-wei2, XIE Hao3*. Study on the Vibrational Spectra and XRD Characters of Huanglong Jade from Longling County, Yunnan Province. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2014, 34(12): 3411-3414.
