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This document discusses the Paleoproterozoic Piaba orogenic gold deposit in Brazil. It formed between 2240-2000 Ma during the development of an accretionary orogen. The deposit is associated with a strike-slip fault that cut metavolcanic-sedimentary rocks and granitoids. Two styles of mineralization are present: veinlets with disseminated gold and subordinate low-sulfide veins. Fluid inclusions and isotopes indicate mineralization occurred at 250-330°C from a reduced, aqueous-carbonic metamorphic fluid. Lea

Author

Gabriel França

Language

EN