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  • 1 Centro Federal de Educação Tecnológica de Sergipe Av. Engº. Gentil Tavares da Motta, 1166, Bairro Getúlio Vargas Aracaju SE 49055-260 Brazil
  • | 2 Instituto de Pesquisas Energéticas e Nucleares (IPEN/CNEN-SP) Avenida Professor Lineu Prestes, 2242, Cidade Universitária São Paulo SP 05508-000 Brazil
  • | 3 Museu de Arqueologia de Xingó (MAX) Rodovia Canindé-Piranhas, TrechoUHE—Xingó Canindé SE 43200-000 Brazil
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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.