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Gold mines, called Garimpos in Portuguese, are located throughout several states of the Brazilian Amazon: Amapá (AP), Amazonas (AM), Maranhão (MA), Mato Grosso (MT), Pará (PA), Rondônia (RO), and Roraima (RR). In these locations, gold mining is very often performed using artisanal processes that release large amounts of elemental mercury (Hg0) in the environment.
