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Published online by Cambridge University Press: 26 February 2011
The chemical composition (body and glaze) of over thirty Yaozhou porcelain fragments are determined by X-ray fluorescence (XRF) analysis. Statistical analysis of these results combined with data already published indicate that the full evolution process of Yaozhou porcelain can be divided into four stages. Each stage exhibits a characteristic composition determined by the raw materials and batch composition used to produce the porcelain bodies and glazes. Almost all of Yaozhou celadon and white ware glazes belong predominantly to the CaO-type glaze (or lime glaze), but the glazes of the Song Dynasty (A.D. 960–1280) and later periods have higher K2O content and less CaO than the earlier periods.