PROVENANCE RELATIONSHIP BETWEEN ANCIENT RU PORCELAIN GLAZES FROM QINGLI-ANGSI KILN AND ANCIENT PORCELAIN GLAZES FROM ZHANGGONGXIANG KILN

Thirty-one samples of ancient Ru official porcelain glazes and four Ru folk porcelain glazes unearthed from the Qingli- angsi kiln in the town of Baofeng and thirty-two samples of ancient Chinese porcelain glazes from the Zhanggongxiang kiln in the town of Ruzhou were selected and analyzed by using neutron activation analysis.Twenty-four elements were measured.The data of these elemental contents were investigated by principle component factor analysis and hierarchical cluster analysis in order to deter- mine the correlation between the various sample glazes from the Qingliangsi and Zhanggongxiang kilns.The results indicate that Ru official porcelain glazes have higher content of Fe and Co,which are the common coloring elements,compared to the ancient porce- lain glazes from the Zhanggongxiang kiln;the sources of the raw materials and the formula of Ru official porcelain glazes are stable and obviously different from those of Ru folk porcelain glazes,whose chemical compositions are scattered;and the chemical compo- sitions of the glaze from the Zhanggongxiang kiln are also scattered and,most of the sample glazes from the Zhanggongxiang kiln are similar to Ru official porcelain glazes.Therefore,the Zhanggongxiang kiln is related to the Qingliangsi kiln.