MAGMATIC ARC AND ASSOCIATED GOLD, COPPER, SILVER, AND BARITE DEPOSITS IN THE STATE OF GOIÁS, CENTRAL BRAZIL: CHARACTERISTICS AND SPECULATIONS

RAUL MINAS KUYUMJIAN

Resumo


In the western portion of the State of Goiás, Central Brazil, base-metal deposits typical of volcanic-plutonic arcs occur. Upto-date studies suggest that porphyry Cu-Au, (volcanogenic ?) hydrothermal exhalative Cu-Au and stratiform, submarine exhalative Au-Ag-Ba are present. Although restricted, the present state of knowledge on the geology and mineralizations of the magmatic arc indicates potential resources for metallic mineral deposits in the Brasília Belt.

Palavras-chave


Mineral deposits; Magmatic arc; Goiás; Central Brazil.

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