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Zróżnicowanie surowcowe wczesnośredniowiecznej ceramiki z Wiślicy w świetle wyników badań chemicznych
(Muzeum Okręgowe w Rzeszowie; Instytut Archeologii UR; Fundacja Rzeszowskiego Ośrodka Archeologicznego; Oficyna Wydawnicza „Zimowit”, 2015) Glińska, Nina; Młodecka, Halina
The article presents the results of the analysis of the chemical composition of selected fragments of early medieval pottery from Wiślica. Ceramics on the basis of the type of clay and the type, size, quantity and distribution of mineral admixtures was divided into five groups of raw materials. Each group was chosen after 11 samples. Chemical research aimed to verify and clarify the proposed division. Their results confirm the general outline of the earlier partition on groups. In all analyses clearly stood out I group. It is made of plastic clay that includes in its composition a significant amount of crumbled calcium carbonate. The remaining sample form two groups. On the basis of the chemical composition, you can assume that the ceramics group II and V and III of settlement is made from the clay more ductile. The ceramics of group IV and III (Regia) is made of clay less ductile as indicated by the higher content of mineral admixture and a lower value of Al2O3/SiO2.