甘肃张家川马家塬战国墓地出土绿松石珠微痕研究

Micro-wear Analysis of the Turquoise Beads Unearthed at the Majiayuan Cemetery of the Warring-States Period in Zhangjiachuan County, Gansu

张家川马家塬墓地出土饰品种类多样、工艺丰富,其中M6出土的一批绿松石珠微小精致,体现了较高的工艺水平。为了解其加工方式,利用三维景深显微镜,从其制作过程中遗留下的微痕入手分析,认为这批绿松石珠应是利用边角余料,加工成较长的圆柱体,使用空心管钻,配合解玉砂对钻方式,贯通打孔,再使用砣切削为片状成型,最后精细抛光而成。本文从加工工艺方面,为了解古代珠饰制作提供一定的信息。

The Majiayuan Cemetery of the Warring-States Period in Zhangjiachuan County yielded diversi fied ornaments made by innumerous techniques.Among them,a set of turquoise beads unearthed from M6 were tiny and exquisite,showing superb handicraft skills.To thoroughly understand their processing methods,by analyzing the micro-wears left during the processing with three-dimensional field microscopy,this paper realizes that these turquoise beads were made of offcuts by processing them into long cylindrical bars first,then a through hole was drilled bilaterally with a tubular drill under the help of corundum sands;these tubular bars were sectioned into ring-shaped pieces with emery wheels,and finally finished by polishing.This paper provides some messages in the aspect of processing techniques for the making of jewelry in the ancient times.