Chemical and mineralogical analysis was performed on ceramics and clay samples from Barracão archaeological site located in
Baixo São Francisco River by means of instrumental neutron activation analysis (INAA) and by differential scanning calorimetry
(DSC). The data set was studied by means of cluster analysis (CA) and discriminant analysis (DA). The results showed that
the raw material used in ceramics is not local. By using DSC it was possible to discover that the principal minerals in the
samples are quartz, feldspars, mica and kaolinite.