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O tratamento térmico da ametista: Alto Bonito, Garimpo das Pedras, Carajás, Pará
(Universidade Federal de Minas GeraisBrasilFAF - DEPARTAMENTO DE ANTROPOLOGIA E ARQUEOLOGIAUFMG, 2018)
In the early 1980s, a group of sourdoughs settled in the Alto Bonito farm, in the municipality of Marabá (Serra dos Carajás region, Pará), where a significant occurrence of amethyst crystals was discovered. It begins the ...