Spectroscopy and Spectral Analysis, Volume. 29, Issue 2, 406(2009)
Raman Spectrum Study on Turquoise
The Raman spectrum has been employed to discuss the explanation of the structure of water and the vibration of [PO3-4] tetrahedron of the turquoise from Hubei and Anhui province.The Raman spectra are resulted mainly from vibrations of water,hydroxyl units and [PO3-4] tetrahedron of turquoise.The 3 510-3 440 cm-1 bands with the main Raman spectra peak at 3 470 cm-1 were assigned to the ν(OH) stretching vibrations and the 3 290-3 070 cm-1 bands assigned to the ν(H2O) stretching vibrations.The bands observed at 1 200-1 030 cm-1 with the strong peak at 1 039 cm-1 were assigned to ν3(PO4) antisymmetric stretching vibrations.And the Raman spectra peaks at 650-540 cm-1 and 500-410 cm-1 were attributed to the ν4 and ν2 bending vibrations of [PO3-4] tetrahedron,respectively.The spectra of the turquoise from different localities are basically similar and subtly different.
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CHEN Quan-li, QI Li-jian, CHEN Jing-zhong. Raman Spectrum Study on Turquoise[J]. Spectroscopy and Spectral Analysis, 2009, 29(2): 406
Received: Oct. 16, 2007
Accepted: --
Published Online: Dec. 9, 2009
The Author Email: Quan-li CHEN (chenquanli_0302@163.com)