Geological setting of the Wassa gold deposit, SW Ghana
- Perrouty, S.
- Jessell, Mark
- Bourassa, Y.
- Miller, J.
- Apau, D.
- Parra-Avila, L. A.
- Le Mignot, E.
- Velasquez, G.
- Ganne, Jérôme
- Siebenaller, L.
- Baratoux, Lenka
- Aillères, L.
- André-Mayer, A. S.
- Béziat, D.
- Salvi, S.
Publication date
January 2016
DOI ISSN
0169-1368 Citation count (estimate)
2Abstract
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 Eoebumean 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 (similar to 2.1 Ga) and is associated with quartz-carbonate veins with visible gold and euhedral pyrites
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