期刊名称：Auxiliary Sciences in Archaeology, Preservation of Relics and Environmental Engeneering
出版年度：2017
卷号：23
页码：1-10
出版社：University of Krakow
摘要：This article presents the results of mineralogical and petrographical research of so called graphite pottery. The La Tène culture pottery samples from the valley settlement in Thunau am Kamp were tested. Stereoscopic, polarized and Raman microscopy methods were used in the studies. In addition to examination of graphite from archaeological pottery, Carboniferous Age coal was tested as a potential additive in the La Tène culture pottery masses. Studies were also carried out on graphites from a Bohemian deposit in Český Krumlov, not far from the La Tène culture settlement area of Lower Austria. Another examination included contemporary pottery masses made from local raw materials with natural carbon additives, fired at 750° C in both oxidizing and reducing atmosphere.It was determined that the studied pottery contains coal (probably from Carboniferous Age), not graphite. Due to firing of pottery in reducing atmosphere, it did not burn and did not turn into graphite. "Counterfeit" ceramic pots have been found at the site of Thunau, with only a dark surface layer containing a carbon additive.
