贾湖遗址出土绿松石的无损检测及矿物来源初探

A Nondestructive Test of the Turquoise from the Jiahu Site and a Preliminary Study of Its Source

采用X-射线荧光光谱分析法对贾湖遗址出土的绿松石饰物进行了成分的定性和定量分析, 得到了它们的主要成分的含量。除个别样品外, 大多绿松石的成分较纯, 材质较好。这部分样品的含铁量较低, Fe2O3 含量都在 5%以下, 有的仅千分之几。将这批样品和选自陕西安康、湖北郧县和安徽马鞍山的绿松石矿石样品中的P2O5、As2O5、Fe2O3、CuO和ZnO含量作聚类分析, 发现贾湖出土的绿松石不太可能来自陕西安康、湖北郧县和安徽马鞍山等地的绿松石矿区, 但应来自同一个未知地区。

The compositions of the turquoise unearthed in Jiahu site have been determined by using x—ray fluorescence spectrum in a nondestructive state.Most of them are very pure and their quality is good.The iron content of the turquoise is fairly low.The content of Fe 2 O 3 is loss than 5%,some of them are only 0.n%.The contents of P 2O 5,As 2O 5,Fe 2O 3,CuO and Zno in turquoise,including those that are unearthed in jiahu and are mined nowadays in Shanxi,Hubei and Anhui,have clustered by using SPSS program. We find that the provenance of the turquoise unearthed in.Jiahu is Iocated neither in Shanxi nor in Hubei and Anhui.But it should he Iocated in the same unknown ore area.