Altogether 28 samples

mainly including glazes and bodies of ancient Chinese Ru porcelain

were analyzed by NAA technique and the contents of 36 elements were compared The scatter analysis for nine fingerprint-elements indicates that almost all ancient Chinese Ru porcelain samples had nearly identical and long-term stable source of raw materials although they were fired in different kilns

at varying time and with distinet colors

and moreover

the source of raw materials for modern Ru porcelain seems to approach that for ancient one The close provenance relation between ancient Jun porcelain and ancient Ru procelain is also preliminarily verified The glaze material of Jingdezhen white porcelain is totally different from all other samples

showing that the former came from a separate source