The world-class Wona-Kona gold deposit,Burkina Faso |
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| Affiliation: | 1. UQAC, Université du Québec à Chicoutimi, 555 Boulevard de l''Université, Chicoutimi, Québec G7H 2B1, Canada;2. LAMEQ, Laboratoire de Métallogénie Expérimentale et Quantitative, Université du Québec à Chicoutimi (UQAC), 555 Boulevard de l''Université, Chicoutimi, Québec G7H 2B1, Canada;3. SEMAFO Inc. Société d''Exploitation Minérale en Afrique de l''Ouest, 100 Boulevard Alexis-Nihon, 7e Étage, St-Laurent, Québec H4M 2P3, Canada;1. Key Laboratory of Mineral Resources, Institute of Geology and Geophysics, Chinese Academy of Sciences, P.O. Box 9825, Beijing 100029, China;2. University of Chinese Academy of Sciences, Beijing 100049, China;1. Key Laboratory of Continental Collision and Plateau Uplift, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, PR China;2. CAS Center for Excellence in Tibetan Plateau Earth Sciences, Beijing 100101, PR China;3. Key Laboratory of Mineral Resources, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, PR China;4. John de Laeter Center, TIGeR, Applied Geology, Curtin University, Perth, WA 6945, Australia;5. CAS Key Laboratory of Crust-Mantle Materials and Environments, School of Earth and Space Sciences, University of Science and Technology of China, Heifei 230026, PR China;1. MLR Key Laboratory of Metallogeny and Mineral Assessment, Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China;2. Sino-mine Resource Exploration Co., Limited, Beijing 100089, China;3. Faculty of Geosciences, China University of Geosciences, Beijing 100083, China;1. Université des Sciences, des Techniques et des Technologies de Bamako, Département de Géologie, BP E 3206 Bamako, Mali;2. Université de Toulouse, CNRS, Géosciences Environnement Toulouse, Institut de Recherche pour le Développement, Observatoire Midi-Pyrénées, 14 Av. Edouard Belin, F-31400 Toulouse, France;3. ONG-D Le Soleil dans la Main asbl, 48 Duerfstrooss, L-9696 Winseler, Luxembourg;1. Centre of Studies in Resources Engineering, Indian Institute of Technology Bombay, Powai, 400076, India;2. Centre for Exploration Targeting, University of Western Australia, Crawley, 6009 WA, Australia;3. Corporate Geoscience Group, PO Box 5128, Rockingham Beach, WA 6969, Australia;4. Economic Geology Research Centre, James Cook University, Townsville, QLD 4811, Australia |
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| Abstract: | The world-class > 4 Moz Wona-Kona gold deposit is hosted within the Paleoproterozoic Birimian Houndé greenstone belt which is the most important gold mineralized belt in the western part of Burkina Faso, with a cumulative reserve of ~ 11 Moz. The mineralization consists of a pervasive silicification with disseminated pyrite–arsenopyrite crosscut by quartz–carbonate veinlets (1 to 10 cm wide) forming a vertical, thick (up to 40 m) and laterally extensive (5 km) northeast trending orebody hosted within a large (200 m wide) shear zone of regional extent. Gold occurs in association with 3 generations of pyrite and 2 generations of arsenopyrite. Free gold, interpreted as the last mineralizing event, occurs as late fracture filling in the pervasive silicification zone. |
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