Geological setting of the Wassa gold deposit, SW Ghana

Stephane Perrouty, Mark W Jessell, Yan Bourassa, John Miller, Daniel Apau, Luis A Parra-Avila, Elodie Le Mignot, German Velasquez, Jerome Ganne, Luc Siebenaller, Lenka Baratoux, Laurent Ailleres, Anne-Sylvie Andre-Mayer, Didier Beziat, Stefano Salvi

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Including past production, current indicated and inferred resources, Wassa is a 5 Moz poly-deformed early-orogenic gold deposit located on the eastern flank of the Ashanti Belt, in southwest Ghana. It is hosted by metamorphosed volcanic, intrusive and sedimentary rocks of the Sefwi Group (ca. 2260–2160 Ma). Early mineralization has an Eoeburnean age (2164 ± 22 Ma, Re–Os on pyrite) and is characterized by quartz veins, by a carbonate alteration of the host rocks, and by deformed gold-bearing pyrite. Remobilization of this gold occurred during the late stages of the Eburnean Orogeny (~ 2.1 Ga) and is associated with quartz-carbonate veins with visible gold and euhedral pyrites.
Original languageEnglish
Pages (from-to)687-691
Number of pages5
JournalOre Geology Reviews
Publication statusPublished - 2016

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