The Buracão area, Central Brazil, comprises a group of structurally–controlled vein–type gold prospects, hosted in the metasedimentary Traíras Fm. of the Araí Group. This group records all tectonic stages of the Statherian taphrogenesis in Central Brazil and represents part of the Brasília Fold Belt (BFB) developed during the Neoproterozoic...
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March 2016 (v1)Journal articleUploaded on: February 28, 2023
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November 2011 (v1)Journal article
The Lavras do Sul Au-Cu mining district, southern Brazil, hosts an Ediacaran plutonic-volcanic association with hydrothermal alteration. This association is interpreted as a ca. 600-580 Ma tilted porphyry-epithermal system, where the main ore occurs in phyllic and intermediate argillic halos around quartz veins. In this paper we used detailed...
Uploaded on: December 3, 2022 -
January 2016 (v1)Journal article
The Ponta Negra Pegmatites (PNP), part of a pegmatitic province in Rio de Janeiro State, Brazil, crop out along an intensely deformed, medium- to high-grade metamorphic area that is proximal to a crustal-scale thrust zone developed during the Brasiliano/Pan–African Orogeny. Fieldwork shows that the pegmatites formed in two distinct stages: (i)...
Uploaded on: February 28, 2023