标题：Japán obszidiánok PGAA vizsgálata a Magyar Nemzeti Múzeum Litotéka gyűjteményéből = Prompt Gamma Activation Analysis of Japanese obsidians in the Lithotheca Collection of the HNM
摘要：Elemental composition of twenty-eight Japanese geological obsidians of the Lithotheca collection of the Hungarian National Museum has been studied by Prompt Gamma Activation Analysis. The analytical results provide basic source data for a Japanese lithic raw material data base that is intended to use in advanced provenance studies in Japan. Additionally, European obsidian research can utilize the results, as comparative data. Based on the results, we can ascertain that the boron and chlorine contents of the Japanese obsidians are of similar magnitude or slightly higher than that of the Carpathian ones, but not as characteristically high as the .Lipari" type ones. Most of the samples, which originate from the same quarry, form well defined groups according to their composition
