对湖北、安徽地区绿松石进行了激光拉曼光谱测试分析。结果表明,绿松石中H2O,OH-及PO3-4的基团振动是导致其激光拉曼光谱形成的主要原因。3 510-3 440 cm^-1的谱峰是由ν(OH)伸缩振动所致,其中ν(OH)振动导致的强拉曼特征谱峰在3 470 cm^-1附近,ν(H2O)伸缩振动致拉曼谱峰位于3 290-3 070 cm^-1附近的较为宽缓的弱谱峰处;由ν3(PO4)伸缩振动致强拉曼特征谱峰在1 200-1 030 cm^-1之间,其中ν3(PO4)振动导致的强拉曼特征谱峰在1 039 cm^-1附近,ν4(PO4)弯曲振动位于650-540 cm^-1范围,ν2(PO4)的弯曲振动谱峰位于500-410 cm^-1处;不同产地、不同结晶类型的绿松石表现出的拉曼谱峰特征基本一致。

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.