利用无损分析对甘肃齐家坪遗址和磨沟遗址出土绿松石进行产源探索

Preliminary Study on the Provenance of Turquoise Unearthed from Qijiaping Site and Mogou site in Gansu by Non-Destructive Analysis

绿松石在新石器时代晚期的西北地区,作为一种装饰品被大量使用,其产地来源一直是深受关注、悬而未决的问题。本文通过使用红外光谱和拉曼光谱的无损分析检测甘肃磨沟遗址和齐家坪遗址出土的绿松石,并与湖北、安徽、新疆产出的绿松石进行对比。结果证明,红外和拉曼光谱分析对绿松石的主要官能团和晶体骨架结构有高灵敏度,但是无法对不同产地及成因类型的绿松石进行有效的区分。

Turquoises were widely used as ornaments in the northwestern region of China in the late Neolithic period,and its provenance has been a matter of great concern and has not been resolved.In this paper,non-destructive analytic methods(infrared and Raman spectroscopy)are used to distinguish the turquoises unearthed from the Qijiaping site and the Mogou site from the turquoises from Hubei,Anhui,and Xinjiang.The results show that infrared and Raman spectroscopy analyses have high sensitivity to the main functional groups and crystal structure of turquoise,but are not effective to distinguish turquoises from different provenances and genetic types.