Principal Component Analyses And Related Studies On The Proto-porcelain Of Hulushan Site,Wuyishan,Fujian Province

This paper produced archaeometry studies on 25 pieces proto-porcelain of Hulushan site,3 pieces proto-porcelain of Zhulinkeng site and 4 pieces proto-porcelain of Liaotianjian site.The main chemical composition of body and glaze of the samples were applied the multivariate statistical analysis methods including principal component analysis,factor analysis and cluster analysis.The results show that the proto-porcelain of Hulushan site was manufactured with a single formula,of which the porcelain stone composed the raw material.The elemental composition is in line with the characteristics of the early quartz-mica porcelain in the southern China.The body formula of the proto-porcelain of Liaotianjian and Hulushan site was still in the exploratory stage,and the selection of raw material also show some primitive features.However,Zhulinkeng samples show more advanced characters than the other two sites in some extend.Our analyses indicate that the glazes of the samples from all the three sites were made from a mixture of clay with fired grass ash.The manufacturer of Zhulinkeng kiln have initially mastered the more advanced proto-porcelain enamel formula technology,which is conducive to improve the product quality and the success rate in firing manufacture.In addition,the paper also discussed the regional characteristics of the proto-porcelain of Hulushan site.The chemical compositions of the body and glaze were compared with those unearthed in the nearby Zhejiang and Jiangxi province.The results suggest that the proto-porcelain unearthed in Jiangshan,Zhejiang have close relationship with Hulushan samples.We argue that part of the proto-porcelain of Hulushan site should be derived from the input of Zhejiang,while others were manufactured locally with the influence of Wu and Yue culture.