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A imagem mostra um pedaço de pirita, um mineral também conhecido como "ouro de tolo" devido à sua semelhança com o ouro.  A pirita é um sulfeto de ferro, composta por um átomo de ferro e dois de enxofre.  O nome "pirita" vem da palavra grega "pyr", que significa fogo, porque o mineral pode produzir faíscas quando golpeado com aço.  A pirita é frequentemente encontrada em rochas sedimentares, rochas metamórficas e veios de quartzo.  Embora seja frequentemente confundida com ouro. #maisviews
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